From 312ebdbc7fe79cdb97b91532888cef459000de3c Mon Sep 17 00:00:00 2001
From: Eric Chang <mc@mc4.us>
Date: Fri, 20 Dec 2019 15:57:24 +0800
Subject: [PATCH] add pg_prewarm test

---
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 117 files changed, 2506 insertions(+), 839 deletions(-)
 create mode 100644 content/post/test-pg_prewarm.md
 create mode 100644 public/post/test-pg_prewarm/index.html

diff --git a/content/post/test-pg_prewarm.md b/content/post/test-pg_prewarm.md
new file mode 100644
index 00000000..a679c999
--- /dev/null
+++ b/content/post/test-pg_prewarm.md
@@ -0,0 +1,418 @@
+---
+title: "[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11"
+date: 2019-12-20T14:31:42+08:00
+draft: false
+noSummary: false
+categories: ['筆記']
+image: https://h.cowbay.org/images/post-default-9.jpg
+tags: ['postgresql']
+author: "Eric Chang"
+keywords:
+  - postgresql
+  - pg_prewarm 
+---
+
+老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面
+
+但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)
+
+在找資料的時候，發現了這個postgresql 的 pg_prewarm extension
+
+好像有點意思？就來測試看看吧！
+
+只是目前還不知道該怎麼解讀測試的數據就是了...
+
+幹！林北真的不是 DBA 啦 =.=
+
+<!--more-->
+
+安裝系統、postgresql 資料庫什麼的就不提了，那不是這次的重點
+
+#### 修改 postgresql.conf
+
+編輯postgresql.conf，開啟平行處理以及設定可用記憶體容量
+
+這台測試機的環境是一台三代i7 , 24G RAM , 240G SSD，安裝debian 10(buster)
+
+```
+# load libiriaes
+# 其實這次不會用到pg_stat_statements ，不過出於習慣，還是加入開機自動載入吧
+shared_preload_libraries = 'pg_stat_statements'
+
+#------------------------------------------------------------------------------
+# CUSTOMIZED OPTIONS
+#------------------------------------------------------------------------------
+
+max_connections = 20
+shared_buffers = 6GB
+effective_cache_size = 18GB
+maintenance_work_mem = 1536MB
+checkpoint_completion_target = 0.7
+wal_buffers = 16MB
+default_statistics_target = 100
+random_page_cost = 1.1
+effective_io_concurrency = 200
+work_mem = 78643kB
+min_wal_size = 1GB
+max_wal_size = 2GB
+max_worker_processes = 8
+max_parallel_workers_per_gather = 4
+max_parallel_workers = 8
+```
+
+重新啟動postgresql ，準備開始測試囉！
+
+轉換成 postgres 身份後，進入 psql
+
+#### 建立測試資料庫
+
+```
+postgres=# create database test;
+CREATE DATABASE
+postgres=#
+```
+
+#### 連接測試資料庫、建立pg_prewarm extension
+```
+postgres=# \c test ;
+You are now connected to database "test" as user "postgres".
+test=# CREATE EXTENSION pg_prewarm;
+CREATE EXTENSION
+test=# 
+```
+
+#### 建立測試資料表，塞入500萬筆資料
+
+```
+test=# \timing
+Timing is on.
+test=# CREATE TABLE test_tbl AS
+SELECT floor(random() * (9923123) + 1)::int FROM generate_series(1, 5000000) AS id;
+SELECT 5000000
+Time: 2940.602 ms (00:02.941)
+test=#
+```
+#### 檢查看看剛剛建立的table 用了多少空間
+
+哎呀，看起來用得不多啊
+```
+test=# SELECT pg_size_pretty(pg_relation_size('test_tbl'));
+ 173 MB
+```
+**玩大一點，塞個一億筆資料好了**
+
+```
+test=# drop table test_tbl;
+Time: 0.361 ms
+test=# CREATE TABLE test_tbl AS
+SELECT floor(random() * (99343) + 1)::int FROM generate_series(1, 100000000) AS id;
+SELECT 100000000
+Time: 6321.415 ms (00:06.321)
+
+test=# SELECT pg_size_pretty(pg_relation_size('test_tbl'));
+pg_size_pretty | 3457 MB
+
+Time: 0.589 ms
+test=#
+
+```
+
+好，現在資料庫長到3457MB了
+
+先來執行一些初步的取得基本數據
+
+```
+test=# explain (analyze,buffers) select count(*) from test_tbl;
+                                   QUERY PLAN
+------------------------------------------------------------------------------------------------------------------------
+ Finalize Aggregate  (cost=755978.52..755978.53 rows=1 width=8) (actual time=3331.917..3331.918 rows=1 loops=1)
+   Buffers: shared hit=160 read=442318
+   ->  Gather  (cost=755978.10..755978.51 rows=4 width=8) (actual time=3331.876..3333.674 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=160 read=442318
+         ->  Partial Aggregate  (cost=754978.10..754978.11 rows=1 width=8) (actual time=3329.279..3329.280 rows=1 loops=5)
+               Buffers: shared hit=160 read=442318
+               ->  Parallel Seq Scan on test_tbl  (cost=0.00..692478.08 rows=25000008 width=0) (actual time=0.029..1924.601 rows=20000000 loops=5)
+                     Buffers: shared hit=160 read=442318
+ Planning Time: 0.040 ms
+ Execution Time: 3333.729 ms
+(12 rows)
+
+(END)
+
+```
+
+可以看到打中buffer 的部份其實很少，只有 160 ，大部分都是讀進去buffer (442318)
+
+來看看 buffer 的使用狀況
+```
+test=# CREATE EXTENSION pg_buffercache;
+CREATE EXTENSION
+test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+test-#         round(100.0 * count(*) / ( 
+test(#            select setting from pg_settings 
+test(#            where name='shared_buffers')::integer,1)
+test-#         as buffer_percent, 
+test-#         round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+test-# from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+test-# join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+test-# group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 18 MB      |            0.3 |                 0.5
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 64 kB      |            0.0 |                13.3
+ pg_amop      | 48 kB      |            0.0 |                54.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 148.719 ms
+test=# 
+```
+
+可以看到這個 test_tbl 只有0.5% 被撈到shared_buffers 裡面
+
+接下來就把這個table全部推到shared_buffers 裡面去
+
+```
+test=# select pg_prewarm('test_tbl','buffer');
+ pg_prewarm 
+------------
+     442478
+(1 row)
+
+Time: 1938.043 ms (00:01.938)
+test=#
+```
+
+然後再來看一次shared_buffers的使用狀況
+```
+test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+        round(100.0 * count(*) / ( 
+           select setting from pg_settings 
+           where name='shared_buffers')::integer,1)
+        as buffer_percent, 
+        round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 3457 MB    |           56.3 |               100.0
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 64 kB      |            0.0 |                13.3
+ pg_amop      | 48 kB      |            0.0 |                54.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 2778.354 ms (00:02.778)
+test=# 
+```
+
+OK ，可以看到 test_tbl 已經通通被載入 shared_buffers 中
+
+**buffered 表示表格被載入shared_buffers的大小**
+
+**buffer_percent 表示這個表格佔用多少shared_buffers 的比例**
+
+**percent_of_relation 表示這個表格有多少比例被載入 shared_buffers**
+
+
+再來跑一次explain看看狀況
+
+```
+test=# explain (analyze,buffers) select count(*) from test_tbl;
+Time: 3551.785 ms (00:03.552)
+ Finalize Aggregate  (cost=755978.52..755978.53 rows=1 width=8) (actual time=3427.286..3427.287 rows=1 loops=1)
+   Buffers: shared hit=442478
+   ->  Gather  (cost=755978.10..755978.51 rows=4 width=8) (actual time=3427.215..3551.326 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=442478
+         ->  Partial Aggregate  (cost=754978.10..754978.11 rows=1 width=8) (actual time=3423.659..3423.659 rows=1 loops=5)
+               Buffers: shared hit=442478
+               ->  Parallel Seq Scan on test_tbl  (cost=0.00..692478.08 rows=25000008 width=0) (actual time=0.017..1976.744 rows=20000000 loops=5)
+                     Buffers: shared hit=442478
+ Planning Time: 0.039 ms
+ Execution Time: 3551.365 ms
+(12 rows)
+
+```
+
+這邊就可以看到都是從buffer 讀出來所以 hit=442478
+
+看樣子表格還是太小，所以沒有完全發揮？那再來把表格加大！
+
+先重開一次 postgresql 清除buffer
+
+然後重新建立表格
+```
+test=# drop table test_tbl;
+DROP TABLE
+Time: 297.493 ms
+test=# CREATE TABLE test_tbl AS
+test-# SELECT floor(random() * (993343) + 1)::int FROM generate_series(1, 300000000) AS id;
+SELECT 300000000
+Time: 290660.607 ms (04:50.661)
+test=# 
+```
+
+一樣，看看用了多少容量
+```
+test=# SELECT pg_size_pretty(pg_relation_size('test_tbl'));
+ pg_size_pretty 
+----------------
+ 10 GB
+(1 row)
+
+Time: 0.474 ms
+test=# 
+```
+
+哇哈哈，用了10G ，這次還不撐爆你！
+
+跑explain 看看狀況
+
+
+```
+test=# explain (analyze,buffers) select count(*) from test_tbl;
+Time: 22909.065 ms (00:22.909)
+
+                                              QUERY PLAN
+---------------------------------------------------------------------------------------------------------------------------
+ Finalize Aggregate  (cost=2265934.72..2265934.73 rows=1 width=8) (actual time=22906.045..22906.045 rows=1 loops=1)
+   Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+   ->  Gather  (cost=2265934.30..2265934.71 rows=4 width=8) (actual time=22905.997..22908.522 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+         ->  Partial Aggregate  (cost=2264934.30..2264934.31 rows=1 width=8) (actual time=22903.473..22903.474 rows=1 loops=5)
+               Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+               ->  Parallel Seq Scan on test_tbl  (cost=0.00..2077434.24 rows=75000024 width=0) (actual time=0.040..18374.277 rows=60000000 loops=5)
+                     Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+ Planning Time: 0.094 ms
+ Execution Time: 22908.571 ms
+(12 rows)
+
+```
+
+看一下現在 shared_buffers 使用狀況
+
+可以看到這個 test_tbl 幾乎沒被放入 shared_buffers 中
+
+```
+test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+        round(100.0 * count(*) / ( 
+           select setting from pg_settings 
+           where name='shared_buffers')::integer,1)
+        as buffer_percent, 
+        round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 18 MB      |            0.3 |                 0.2
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 64 kB      |            0.0 |                13.3
+ pg_amop      | 48 kB      |            0.0 |                54.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 163.936 ms
+test=# 
+```
+
+強制把test_tbl 全部塞進 shared_buffers
+
+```
+test=# select pg_prewarm('test_tbl','buffer');
+ pg_prewarm 
+------------
+    1327434
+(1 row)
+
+Time: 7472.805 ms (00:07.473)
+test=# 
+```
+
+確認一下test_tbl 有沒有被整個塞進去
+
+```
+test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+        round(100.0 * count(*) / ( 
+           select setting from pg_settings 
+           where name='shared_buffers')::integer,1)
+        as buffer_percent, 
+        round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 6142 MB    |          100.0 |                59.2
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 24 kB      |            0.0 |                 5.0
+ pg_amop      | 40 kB      |            0.0 |                45.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 4985.366 ms (00:04.985)
+test=#
+```
+
+GOOD ！ let's do explain again !
+
+```
+test=# explain (analyze,buffers) select count(*) from test_tbl;
+Time: 11451.188 ms (00:11.451)
+                             QUERY PLAN
+--------------------------------------------------------------------------------------------------------------------
+ Finalize Aggregate  (cost=2265934.72..2265934.73 rows=1 width=8) (actual time=11231.664..11231.664 rows=1 loops=1)
+   Buffers: shared hit=785963 read=541471
+   ->  Gather  (cost=2265934.30..2265934.71 rows=4 width=8) (actual time=11231.606..11450.719 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=785963 read=541471
+         ->  Partial Aggregate  (cost=2264934.30..2264934.31 rows=1 width=8) (actual time=11228.829..11228.830 rows=1 loops=5)
+               Buffers: shared hit=785963 read=541471
+               ->  Parallel Seq Scan on test_tbl  (cost=0.00..2077434.24 rows=75000024 width=0) (actual time=0.037..6414.711 rows=60000000 loops=5)
+                     Buffers: shared hit=785963 read=541471
+ Planning Time: 0.039 ms
+ Execution Time: 11450.781 ms
+(12 rows)
+```
+
+確認一下，果然大部分都打到cache 了，但是因為shared_buffers 不夠大，所以還會從磁碟讀取一部分
+
+而且時間也比之前還沒塞進shared_buffers 的時候要快了不少
+
+22908.571 --> 11450.781 ms
+
+***
+
+從這次的測試看來，我想如果有足夠大的記憶體，能夠把資料表都塞入shared_buffers 中
+
+應該可以帶來不錯的效能增幅！
+
diff --git a/public/about/index.html b/public/about/index.html
index 65efc214..84e1d5df 100644
--- a/public/about/index.html
+++ b/public/about/index.html
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -599,7 +599,7 @@ title="pinterest icon"></i>
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
 </body>
 </html>
diff --git a/public/categories/ansible/index.html b/public/categories/ansible/index.html
index dff3610d..c45ff962 100644
--- a/public/categories/ansible/index.html
+++ b/public/categories/ansible/index.html
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -604,6 +604,6 @@ if (!doNotTrack) {
     </div>
     <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
   </body>
diff --git a/public/categories/index.xml b/public/categories/index.xml
index 07c18f36..43d9f6f1 100644
--- a/public/categories/index.xml
+++ b/public/categories/index.xml
@@ -6,7 +6,7 @@
     <description>Recent content in Categories on MC部落</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en-us</language>
-    <lastBuildDate>Wed, 18 Dec 2019 14:44:27 +0800</lastBuildDate>
+    <lastBuildDate>Fri, 20 Dec 2019 14:31:42 +0800</lastBuildDate>
     
 	<atom:link href="https://h.cowbay.org/categories/index.xml" rel="self" type="application/rss+xml" />
     
@@ -14,7 +14,7 @@
     <item>
       <title>筆記</title>
       <link>https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/</link>
-      <pubDate>Wed, 18 Dec 2019 14:44:27 +0800</pubDate>
+      <pubDate>Fri, 20 Dec 2019 14:31:42 +0800</pubDate>
       
       <guid>https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/</guid>
       <description></description>
diff --git a/public/categories/linux/index.html b/public/categories/linux/index.html
index 4743ddd4..a2f10881 100644
--- a/public/categories/linux/index.html
+++ b/public/categories/linux/index.html
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -479,6 +479,6 @@ if (!doNotTrack) {
     </div>
     <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
   </body>
diff --git a/public/categories/proxmox/index.html b/public/categories/proxmox/index.html
index 1e513d91..67d6c711 100644
--- a/public/categories/proxmox/index.html
+++ b/public/categories/proxmox/index.html
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -483,6 +483,6 @@ if (!doNotTrack) {
     </div>
     <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
   </body>
diff --git a/public/categories/ps/index.html b/public/categories/ps/index.html
index ba9c4ecd..e37a667e 100644
--- a/public/categories/ps/index.html
+++ b/public/categories/ps/index.html
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -418,6 +418,6 @@ if (!doNotTrack) {
     </div>
     <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
   </body>
diff --git a/public/categories/碎念/index.html b/public/categories/碎念/index.html
index b54fac42..e181f0d3 100644
--- a/public/categories/碎念/index.html
+++ b/public/categories/碎念/index.html
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -481,6 +481,6 @@ if (!doNotTrack) {
     </div>
     <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
   </body>
diff --git a/public/categories/筆記/index.html b/public/categories/筆記/index.html
index afb374e7..ebcf1b74 100644
--- a/public/categories/筆記/index.html
+++ b/public/categories/筆記/index.html
@@ -21,8 +21,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/categories\/%E7%AD%86%E8%A8%98\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -45,9 +45,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -297,6 +297,71 @@ if (!doNotTrack) {
 		
 
 		
+			<a class="featured-image-link" href="https://h.cowbay.org/post/test-pg_prewarm/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
+		
+
+				<div class="excerpt-container">
+					<div class="excerpt-meta">
+						<span class="date">20 December</span>
+
+
+
+							
+								
+								<span> / </span>
+							<span class="author">
+							<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
+							</span>
+								
+							
+
+
+						 
+							<span> / </span>
+						<span class="category">
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+						</span>
+						
+					</div>
+							<div class='excerpt-header'>
+								<h2 class='excerpt-title'>
+									<a href="https://h.cowbay.org/post/test-pg_prewarm/ "> [筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11 </a>
+								</h2>
+							</div>
+							<div class='excerpt-content'>
+								<article>
+									<p>老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面</p>
+
+<p>但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)</p>
+
+<p>在找資料的時候，發現了這個postgresql 的 pg_prewarm extension</p>
+
+<p>好像有點意思？就來測試看看吧！</p>
+
+<p>只是目前還不知道該怎麼解讀測試的數據就是了&hellip;</p>
+
+<p>幹！林北真的不是 DBA 啦 =.=</p>
+
+									<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/test-pg_prewarm/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+								</article>
+							</div>
+						</div>
+					</div>
+					
+
+	
+	
+		
+	
+	
+
+		
+			
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+			
+		
+
+		
 			<a class="featured-image-link" href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
 		
 
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-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
 			
 		
 
@@ -412,7 +477,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
 			
 		
 
@@ -481,7 +546,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
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-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
 			
 		
 
@@ -607,7 +672,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
 			
 		
 
@@ -664,7 +729,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
 			
 		
 
@@ -723,7 +788,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
 			
 		
 
@@ -778,7 +843,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
 			
 		
 
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+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
 			
 		
 
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-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
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@@ -1087,7 +1152,7 @@ if (!doNotTrack) {
 
 		
 			
-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
 			
 		
 
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-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
 			
 		
 
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-				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+				<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
 			
 		
 
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diff --git a/public/categories/筆記/index.xml b/public/categories/筆記/index.xml
index d80ba44d..7a9ca13f 100644
--- a/public/categories/筆記/index.xml
+++ b/public/categories/筆記/index.xml
@@ -6,11 +6,30 @@
     <description>Recent content in 筆記 on MC部落</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en-us</language>
-    <lastBuildDate>Wed, 18 Dec 2019 14:44:27 +0800</lastBuildDate>
+    <lastBuildDate>Fri, 20 Dec 2019 14:31:42 +0800</lastBuildDate>
     
 	<atom:link href="https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/index.xml" rel="self" type="application/rss+xml" />
     
     
+    <item>
+      <title>[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11</title>
+      <link>https://h.cowbay.org/post/test-pg_prewarm/</link>
+      <pubDate>Fri, 20 Dec 2019 14:31:42 +0800</pubDate>
+      
+      <guid>https://h.cowbay.org/post/test-pg_prewarm/</guid>
+      <description>&lt;p&gt;老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面&lt;/p&gt;
+
+&lt;p&gt;但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)&lt;/p&gt;
+
+&lt;p&gt;在找資料的時候，發現了這個postgresql 的 pg_prewarm extension&lt;/p&gt;
+
+&lt;p&gt;好像有點意思？就來測試看看吧！&lt;/p&gt;
+
+&lt;p&gt;只是目前還不知道該怎麼解讀測試的數據就是了&amp;hellip;&lt;/p&gt;
+
+&lt;p&gt;幹！林北真的不是 DBA 啦 =.=&lt;/p&gt;</description>
+    </item>
+    
     <item>
       <title>[筆記] 在ansible playbook中不小心多打了一個空格 / Accidentally Typed an Extra Space in Ansible Playbook</title>
       <link>https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/</link>
diff --git a/public/categories/群暉/index.html b/public/categories/群暉/index.html
index 13334dc1..f4172006 100644
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@@ -45,9 +45,9 @@
 
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-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
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@@ -487,6 +487,6 @@ if (!doNotTrack) {
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 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
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+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
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diff --git a/public/contact/index.html b/public/contact/index.html
index 93823995..04536e28 100644
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@@ -45,9 +45,9 @@
 
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diff --git a/public/gallery/sammy93/index.html b/public/gallery/sammy93/index.html
index f39378a8..26ced02d 100644
--- a/public/gallery/sammy93/index.html
+++ b/public/gallery/sammy93/index.html
@@ -45,9 +45,9 @@
 
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-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
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@@ -594,7 +594,7 @@ title="pinterest icon"></i>
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 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
 </body>
 </html>
diff --git a/public/index.html b/public/index.html
index e7b79d4c..e4f75cfa 100644
--- a/public/index.html
+++ b/public/index.html
@@ -22,8 +22,8 @@
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-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
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@@ -46,9 +46,9 @@
 
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-<link href="https://h.cowbay.org/css/style.css?v=1576652201" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652201" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
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 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,12 +288,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/test-pg_prewarm/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">18 December</span>
+						<span class="date">20 December</span>
 
 						
 							
@@ -315,18 +315,24 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/ "> [筆記] 在ansible playbook中不小心多打了一個空格 / Accidentally Typed an Extra Space in Ansible Playbook </a>
+							<a href="https://h.cowbay.org/post/test-pg_prewarm/ "> [筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>剛剛在跑一個修改過的playbook，卻發現一個詭異的狀況</p>
+							<p>老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面</p>
 
-<p>在用template產生檔案之前，爲了避免錯誤，所以我先用 file module 去建立目錄</p>
+<p>但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)</p>
 
-<p>怪就怪在，建立目錄的task沒錯，但是要產生檔案時，卻出現了目的目錄不存在的錯誤</p>
+<p>在找資料的時候，發現了這個postgresql 的 pg_prewarm extension</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>好像有點意思？就來測試看看吧！</p>
+
+<p>只是目前還不知道該怎麼解讀測試的數據就是了&hellip;</p>
+
+<p>幹！林北真的不是 DBA 啦 =.=</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/test-pg_prewarm/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -344,12 +350,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-2.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">16 December</span>
+						<span class="date">18 December</span>
 
 						
 							
@@ -371,20 +377,18 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/ "> 在ubuntu 18.04中，透過 dconf 設定系統層級的「我的最愛」/ Add System Wide Favorite Apps in dock with Dconf in ubuntu 18.04 </a>
+							<a href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/ "> [筆記] 在ansible playbook中不小心多打了一個空格 / Accidentally Typed an Extra Space in Ansible Playbook </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>這幾天在ansible 寫了一份新的playbook給developer 用</p>
-
-<p>然後user反映說，希望能在ubuntu 18.04 內建的dock 裏面新增一個gnome-terminal的icon</p>
+							<p>剛剛在跑一個修改過的playbook，卻發現一個詭異的狀況</p>
 
-<p>我才發現原來之前的寫法不能用在 ubuntu 18.04 上</p>
+<p>在用template產生檔案之前，爲了避免錯誤，所以我先用 file module 去建立目錄</p>
 
-<p>只好又弄了一份出來</p>
+<p>怪就怪在，建立目錄的task沒錯，但是要產生檔案時，卻出現了目的目錄不存在的錯誤</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -402,12 +406,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-2.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">31 October</span>
+						<span class="date">16 December</span>
 
 						
 							
@@ -429,28 +433,20 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/ "> [筆記] ubuntu 18.04 透過 dconf 修改系統 proxy / modify system proxy with dconf in ubuntu 18.04 </a>
+							<a href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/ "> 在ubuntu 18.04中，透過 dconf 設定系統層級的「我的最愛」/ Add System Wide Favorite Apps in dock with Dconf in ubuntu 18.04 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近在準備升級client 的作業系統，從 ubuntu 14.04 準備升級到 18.04 或明年的 20.04</p>
-
-<p>因為公司政策的關係，所以現在要連接internet ，需要申請</p>
-
-<p>然後 user 再去系統的proxy 設定新增一個 PAC 檔</p>
-
-<p>但是這個動作其實是去叫NetworkManager 這個服務</p>
-
-<p>可是在18.04 上，我會把這個服務關掉，因為他會干擾我的DNS設定</p>
+							<p>這幾天在ansible 寫了一份新的playbook給developer 用</p>
 
-<p>所以想試試看有沒有辦法不使用 NetworkManager 服務</p>
+<p>然後user反映說，希望能在ubuntu 18.04 內建的dock 裏面新增一個gnome-terminal的icon</p>
 
-<p>又能夠在 user level 修改 proxy 參數</p>
+<p>我才發現原來之前的寫法不能用在 ubuntu 18.04 上</p>
 
-<p>就想到了用 dconf 來做</p>
+<p>只好又弄了一份出來</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -468,12 +464,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-18.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">14 October</span>
+						<span class="date">31 October</span>
 
 						
 							
@@ -495,20 +491,28 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/ "> [筆記] 超強的ALL-in-One VPN Server streisand / Awesome All in One Vpn Server Streisand </a>
+							<a href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/ "> [筆記] ubuntu 18.04 透過 dconf 修改系統 proxy / modify system proxy with dconf in ubuntu 18.04 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近上班閒得發慌，沒事就上 github 找看看有沒有什麼好玩的專案</p>
+							<p>最近在準備升級client 的作業系統，從 ubuntu 14.04 準備升級到 18.04 或明年的 20.04</p>
 
-<p>就不小心發現了這個 streisand</p>
+<p>因為公司政策的關係，所以現在要連接internet ，需要申請</p>
 
-<p><a href="https://github.com/StreisandEffect/streisand">https://github.com/StreisandEffect/streisand</a></p>
+<p>然後 user 再去系統的proxy 設定新增一個 PAC 檔</p>
 
-<p>玩了一下，發現這根本就是終極的VPN Server solution ..</p>
+<p>但是這個動作其實是去叫NetworkManager 這個服務</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>可是在18.04 上，我會把這個服務關掉，因為他會干擾我的DNS設定</p>
+
+<p>所以想試試看有沒有辦法不使用 NetworkManager 服務</p>
+
+<p>又能夠在 user level 修改 proxy 參數</p>
+
+<p>就想到了用 dconf 來做</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -526,12 +530,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/recommended-ulauncher-in-ubuntu-1804/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-16.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-18.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">04 October</span>
+						<span class="date">14 October</span>
 
 						
 							
@@ -547,22 +551,26 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/"></a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/recommended-ulauncher-in-ubuntu-1804/ "> [推薦] ulauncher ubuntu 18.04 底下，好用的 app launcher / Recommended Ulauncher in Ubuntu 1804 </a>
+							<a href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/ "> [筆記] 超強的ALL-in-One VPN Server streisand / Awesome All in One Vpn Server Streisand </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>這兩天在找關於在 ubuntu 中做搜尋的軟體</p>
+							<p>最近上班閒得發慌，沒事就上 github 找看看有沒有什麼好玩的專案</p>
+
+<p>就不小心發現了這個 streisand</p>
 
-<p>意外找到一個非常好用的工具 ulauncher</p>
+<p><a href="https://github.com/StreisandEffect/streisand">https://github.com/StreisandEffect/streisand</a></p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/recommended-ulauncher-in-ubuntu-1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>玩了一下，發現這根本就是終極的VPN Server solution ..</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -810,7 +818,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652201"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/index.xml b/public/index.xml
index 07aa4e53..bb6ec48a 100644
--- a/public/index.xml
+++ b/public/index.xml
@@ -6,11 +6,30 @@
     <description>Recent content on MC部落</description>
     <generator>Hugo -- gohugo.io</generator>
     <language>en-us</language>
-    <lastBuildDate>Wed, 18 Dec 2019 14:44:27 +0800</lastBuildDate>
+    <lastBuildDate>Fri, 20 Dec 2019 14:31:42 +0800</lastBuildDate>
     
 	<atom:link href="https://h.cowbay.org/index.xml" rel="self" type="application/rss+xml" />
     
     
+    <item>
+      <title>[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11</title>
+      <link>https://h.cowbay.org/post/test-pg_prewarm/</link>
+      <pubDate>Fri, 20 Dec 2019 14:31:42 +0800</pubDate>
+      
+      <guid>https://h.cowbay.org/post/test-pg_prewarm/</guid>
+      <description>&lt;p&gt;老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面&lt;/p&gt;
+
+&lt;p&gt;但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)&lt;/p&gt;
+
+&lt;p&gt;在找資料的時候，發現了這個postgresql 的 pg_prewarm extension&lt;/p&gt;
+
+&lt;p&gt;好像有點意思？就來測試看看吧！&lt;/p&gt;
+
+&lt;p&gt;只是目前還不知道該怎麼解讀測試的數據就是了&amp;hellip;&lt;/p&gt;
+
+&lt;p&gt;幹！林北真的不是 DBA 啦 =.=&lt;/p&gt;</description>
+    </item>
+    
     <item>
       <title>[筆記] 在ansible playbook中不小心多打了一個空格 / Accidentally Typed an Extra Space in Ansible Playbook</title>
       <link>https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/</link>
diff --git a/public/page/2/index.html b/public/page/2/index.html
index 2b3f4828..b4554c76 100644
--- a/public/page/2/index.html
+++ b/public/page/2/index.html
@@ -22,8 +22,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652201" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652201" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,12 +288,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/recommended-ulauncher-in-ubuntu-1804/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-16.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">20 September</span>
+						<span class="date">04 October</span>
 
 						
 							
@@ -309,30 +309,22 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+							<a href="/categories/"></a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/ "> [筆記] 在ubuntu 18.04安裝psql 11 以及 pg_auto_failover / install psql 11 and pg_auto_failover in ubuntu 18.04 </a>
+							<a href="https://h.cowbay.org/post/recommended-ulauncher-in-ubuntu-1804/ "> [推薦] ulauncher ubuntu 18.04 底下，好用的 app launcher / Recommended Ulauncher in Ubuntu 1804 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近都在弄postgresql</p>
-
-<p>備份、還原測試得差不多了，就等著看到時候要用什麼方式</p>
-
-<p>前幾天看到 pg_auto_failover 這個postgresql 的extension</p>
+							<p>這兩天在找關於在 ubuntu 中做搜尋的軟體</p>
 
-<p><a href="https://github.com/citusdata/pg_auto_failover">https://github.com/citusdata/pg_auto_failover</a></p>
-
-<p>感覺挺不錯的，看起來設定很簡單，雖然之前已經測試了 keepalived 做 HA</p>
-
-<p>不過，反正當作練功嘛，多測試一套也不錯！</p>
+<p>意外找到一個非常好用的工具 ulauncher</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/recommended-ulauncher-in-ubuntu-1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -350,12 +342,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">10 September</span>
+						<span class="date">20 September</span>
 
 						
 							
@@ -377,16 +369,24 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/ "> [筆記] 測試 USB 3.1 Gen2 NVME SSD 外接盒 &amp; 內建pci-e ssd &amp; 外接SATA SSD / Bencmark With External Internal Nvme Ssd and External Sata Ssd </a>
+							<a href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/ "> [筆記] 在ubuntu 18.04安裝psql 11 以及 pg_auto_failover / install psql 11 and pg_auto_failover in ubuntu 18.04 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>前幾天在淘寶上買了個 SSK 的USB 3.1 Gen2 (type-c) NVME SSD 外接盒
-手邊也剛好有一條多的intel 600p nvme ssd 就順手來做個比較
-目標是看看有沒有可能直接用外接的SSD來跑postgresql</p>
+							<p>最近都在弄postgresql</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>備份、還原測試得差不多了，就等著看到時候要用什麼方式</p>
+
+<p>前幾天看到 pg_auto_failover 這個postgresql 的extension</p>
+
+<p><a href="https://github.com/citusdata/pg_auto_failover">https://github.com/citusdata/pg_auto_failover</a></p>
+
+<p>感覺挺不錯的，看起來設定很簡單，雖然之前已經測試了 keepalived 做 HA</p>
+
+<p>不過，反正當作練功嘛，多測試一套也不錯！</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -404,12 +404,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">06 September</span>
+						<span class="date">10 September</span>
 
 						
 							
@@ -431,18 +431,16 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/ "> [筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot </a>
+							<a href="https://h.cowbay.org/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/ "> [筆記] 測試 USB 3.1 Gen2 NVME SSD 外接盒 &amp; 內建pci-e ssd &amp; 外接SATA SSD / Bencmark With External Internal Nvme Ssd and External Sata Ssd </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>前面測試了用pgbarman / pgbackrest 來備份 postgresql</p>
-
-<p>這次改從system file level 來下手</p>
-
-<p>採用zfs 的快照來備份、還原postgresql 資料庫</p>
+							<p>前幾天在淘寶上買了個 SSK 的USB 3.1 Gen2 (type-c) NVME SSD 外接盒
+手邊也剛好有一條多的intel 600p nvme ssd 就順手來做個比較
+目標是看看有沒有可能直接用外接的SSD來跑postgresql</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/bencmark-with-external-internal-nvme-ssd-and-external-sata-ssd/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -460,12 +458,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-15.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">05 September</span>
+						<span class="date">06 September</span>
 
 						
 							
@@ -487,14 +485,18 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/ "> [筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest </a>
+							<a href="https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/ "> [筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>這兩天在測試pgbackrest ，簡單筆記一下測試狀況</p>
+							<p>前面測試了用pgbarman / pgbackrest 來備份 postgresql</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>這次改從system file level 來下手</p>
+
+<p>採用zfs 的快照來備份、還原postgresql 資料庫</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -512,12 +514,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-4.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-15.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">23 August</span>
+						<span class="date">05 September</span>
 
 						
 							
@@ -539,14 +541,14 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/ "> [筆記] 在Ubuntu 18.04 下 透過 pgbarman rsync/ssh backup 備份 postgresql 10 / backup postgresql 10 with pgbarman via ssh/rsync in ubuntu 18.04 </a>
+							<a href="https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/ "> [筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>這篇繼續講 pgbarman 透過 rsync/ssh 來備份 postgresql 資料庫的方式</p>
+							<p>這兩天在測試pgbackrest ，簡單筆記一下測試狀況</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -796,7 +798,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/page/3/index.html b/public/page/3/index.html
index 9e89d867..70b0532b 100644
--- a/public/page/3/index.html
+++ b/public/page/3/index.html
@@ -22,8 +22,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,7 +288,7 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-4.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-4.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
@@ -315,20 +315,14 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10/ "> [筆記] 在Ubuntu 18.04 下 透過 pgbarman streaming backup 備份 postgresql 10/ backup postgresql 10 with pgbarman straming backup in ubuntu 18.04 </a>
+							<a href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/ "> [筆記] 在Ubuntu 18.04 下 透過 pgbarman rsync/ssh backup 備份 postgresql 10 / backup postgresql 10 with pgbarman via ssh/rsync in ubuntu 18.04 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>很久以前就有看到這個用來備份postgresql 的 pgbarman</p>
+							<p>這篇繼續講 pgbarman 透過 rsync/ssh 來備份 postgresql 資料庫的方式</p>
 
-<p><a href="https://www.pgbarman.org/">https://www.pgbarman.org/</a></p>
-
-<p>前幾天老闆在slack 上面又提到，所以這次就花了點時間來玩玩看</p>
-
-<p>不過呢，雖然有弄起來，但是還真不知道有些問題是怎麼解決的&hellip;</p>
-
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10-via-ssh/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -346,12 +340,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-4.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">20 August</span>
+						<span class="date">23 August</span>
 
 						
 							
@@ -373,20 +367,20 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/ "> [筆記] 在ubuntu 18.04 下安裝nvidia 顯示卡驅動程式以及 pgstrom / Install Nvidia Driver Cuda Pgstrom in Ubuntu 1804 </a>
+							<a href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10/ "> [筆記] 在Ubuntu 18.04 下 透過 pgbarman streaming backup 備份 postgresql 10/ backup postgresql 10 with pgbarman straming backup in ubuntu 18.04 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>因為老闆說要試試看用GPU 來跑postgresql 威力</p>
+							<p>很久以前就有看到這個用來備份postgresql 的 pgbarman</p>
 
-<p>手邊剛好有一張 geforce gt 720</p>
+<p><a href="https://www.pgbarman.org/">https://www.pgbarman.org/</a></p>
 
-<p>一開始沒想太多，看到有這張卡的驅動程式，然後CUDA也有支援</p>
+<p>前幾天老闆在slack 上面又提到，所以這次就花了點時間來玩玩看</p>
 
-<p>就直接從桌機拔下來，接去LAB Server ，然後就開始一連串的難關了&hellip;</p>
+<p>不過呢，雖然有弄起來，但是還真不知道有些問題是怎麼解決的&hellip;</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pgbarman-in-ubuntu-1804-postgresql-10/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -404,12 +398,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-8.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">16 August</span>
+						<span class="date">20 August</span>
 
 						
 							
@@ -431,26 +425,20 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/ "> [筆記] 在gcp 中用wireguard建立VPN時，不要用 10.0.0.0/16 網段/Do No Use 10 0 0 0 Private Ipaddr in GCP </a>
+							<a href="https://h.cowbay.org/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/ "> [筆記] 在ubuntu 18.04 下安裝nvidia 顯示卡驅動程式以及 pgstrom / Install Nvidia Driver Cuda Pgstrom in Ubuntu 1804 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近一直在玩 wireguard ，先前把各個分公司和總部的VPN 改用 wireguard 建立</p>
-
-<p>想說再打個VPN tunnel 來當跳板連 ptt 好了</p>
-
-<p>因為wireguard 建立很簡單，而且又可以指定想要繞出去的路由，不會影響原本的網路環境</p>
-
-<p>本來是在vultr 的VPS上面建立這個tunnel</p>
+							<p>因為老闆說要試試看用GPU 來跑postgresql 威力</p>
 
-<p>但是那台VPS連去ptt 很頓，卡卡的</p>
+<p>手邊剛好有一張 geforce gt 720</p>
 
-<p>所以改用google cloud platform 的free tier 來做</p>
+<p>一開始沒想太多，看到有這張卡的驅動程式，然後CUDA也有支援</p>
 
-<p>反正只是拿來當跳板，不會有什麼流量、運算產生，可以一直保持免費的狀態</p>
+<p>就直接從桌機拔下來，接去LAB Server ，然後就開始一連串的難關了&hellip;</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -468,12 +456,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-8.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">13 August</span>
+						<span class="date">16 August</span>
 
 						
 							
@@ -495,24 +483,26 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/ "> [筆記] 透過 wireguard 建立多點 site to site VPN / Multiple Site to Site VPN Using Wireguard </a>
+							<a href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/ "> [筆記] 在gcp 中用wireguard建立VPN時，不要用 10.0.0.0/16 網段/Do No Use 10 0 0 0 Private Ipaddr in GCP </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>因為實在受夠了現在用的 openwrt + strongswan 建立 IPSec VPN</p>
+							<p>最近一直在玩 wireguard ，先前把各個分公司和總部的VPN 改用 wireguard 建立</p>
 
-<p>雖然說其實沒有什麼不好，但是畢竟不是我建立的，而當初的文件也都不見了</p>
+<p>想說再打個VPN tunnel 來當跳板連 ptt 好了</p>
 
-<p>完全沒辦法了解當時設計的邏輯，造成後續debug 困難</p>
+<p>因為wireguard 建立很簡單，而且又可以指定想要繞出去的路由，不會影響原本的網路環境</p>
 
-<p>可以想像一下，一台VPN router ping 不到remote、ping不到internet、甚至ping不到自己 是要怎麼debug !?(翻桌</p>
+<p>本來是在vultr 的VPS上面建立這個tunnel</p>
 
-<p>之前買了兩台edgerouter X 拿來玩了一下 wireguard，感覺還不錯，不過只有測試到點對點</p>
+<p>但是那台VPS連去ptt 很頓，卡卡的</p>
 
-<p>這次試試看躲在gateway後面，看看能不能建立多點的VPN環境</p>
+<p>所以改用google cloud platform 的free tier 來做</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>反正只是拿來當跳板，不會有什麼流量、運算產生，可以一直保持免費的狀態</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -530,12 +520,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">06 August</span>
+						<span class="date">13 August</span>
 
 						
 							
@@ -557,32 +547,24 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/ "> [筆記] 在edgerouter上用wireguard 建立site to site VPN / Site to Site Vpn Using Wireguard in Two Edgerouters </a>
+							<a href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/ "> [筆記] 透過 wireguard 建立多點 site to site VPN / Multiple Site to Site VPN Using Wireguard </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>之前總部和分公司之間 是用buffalo 的小AP 灌 openwrt</p>
-
-<p>然後用strongswan 來打 IPSEC site to site VPN</p>
-
-<p>config 看起來不是很難 (只是看起來)</p>
-
-<p>但是實際上已經找不到當初的文件</p>
-
-<p>所以要維護很困難(光那些RSA KEY 就不知道為何、如何產生)</p>
+							<p>因為實在受夠了現在用的 openwrt + strongswan 建立 IPSec VPN</p>
 
-<p>後來採購了兩台edgerouter X 做測試</p>
+<p>雖然說其實沒有什麼不好，但是畢竟不是我建立的，而當初的文件也都不見了</p>
 
-<p>也用openvpn 成功的建立了 site to site VPN</p>
+<p>完全沒辦法了解當時設計的邏輯，造成後續debug 困難</p>
 
-<p>本來想說 openvpn 已經夠簡單了</p>
+<p>可以想像一下，一台VPN router ping 不到remote、ping不到internet、甚至ping不到自己 是要怎麼debug !?(翻桌</p>
 
-<p>今天看到文章說用wireguard 可以更簡單</p>
+<p>之前買了兩台edgerouter X 拿來玩了一下 wireguard，感覺還不錯，不過只有測試到點對點</p>
 
-<p>於是研究了一下，發現還真的很簡單！</p>
+<p>這次試試看躲在gateway後面，看看能不能建立多點的VPN環境</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/multiple-site-to-site-vpn-using-wireguard/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -834,7 +816,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/page/4/index.html b/public/page/4/index.html
index 2374cd5c..d8156ff5 100644
--- a/public/page/4/index.html
+++ b/public/page/4/index.html
@@ -22,8 +22,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
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-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,12 +288,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">05 August</span>
+						<span class="date">06 August</span>
 
 						
 							
@@ -309,31 +309,38 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/ansible">ansible</a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/ "> [筆記] 為了保存log 用script 指令執行ansible / Another Way to Keep Ansible Log using script command </a>
+							<a href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/ "> [筆記] 在edgerouter上用wireguard 建立site to site VPN / Site to Site Vpn Using Wireguard in Two Edgerouters </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>之前為了能夠在執行完 ansible playbook 後，能有個log 可以看</p>
+							<p>之前總部和分公司之間 是用buffalo 的小AP 灌 openwrt</p>
 
-<p>所以在每次執行的時候，都要加入 tee 的指令</p>
+<p>然後用strongswan 來打 IPSEC site to site VPN</p>
 
-<p>像是</p>
+<p>config 看起來不是很難 (只是看起來)</p>
 
-<pre><code>ANSIBLE_CONFIG=/home/D/ansiblecontrol/ansible.cfg /usr/local/bin/ansible-playbook  /home/D/ansiblecontrol/playbook.user_client.yml --vault-password-file=/home/D/ansiblecontrol/vault.passwd -i /home/D/ansiblecontrol/inventory/production -f1 --limit tyuserclients |tee /tmp/tyuserclients.log
-</code></pre>
+<p>但是實際上已經找不到當初的文件</p>
 
-<p>一直都是放在crontab 裡面執行，也就沒有去管他</p>
+<p>所以要維護很困難(光那些RSA KEY 就不知道為何、如何產生)</p>
 
-<p>反正也沒有人關心結果怎樣 (攤手</p>
+<p>後來採購了兩台edgerouter X 做測試</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>也用openvpn 成功的建立了 site to site VPN</p>
+
+<p>本來想說 openvpn 已經夠簡單了</p>
+
+<p>今天看到文章說用wireguard 可以更簡單</p>
+
+<p>於是研究了一下，發現還真的很簡單！</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/site-to-site-vpn-using-wireguard-in-two-edgerouters/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -351,12 +358,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">31 July</span>
+						<span class="date">05 August</span>
 
 						
 							
@@ -372,34 +379,31 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+							<a href="/categories/ansible">ansible</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/ "> [筆記] 用pxe 安裝系統，完成後送出郵件通知 / send mail notification after pxe install </a>
+							<a href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/ "> [筆記] 為了保存log 用script 指令執行ansible / Another Way to Keep Ansible Log using script command </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近有個任務，需要大量安裝client</p>
-
-<p>想用PXE來處理，只要user開機按F12(acer 桌機) 選擇PXE Boot</p>
-
-<p>然後選擇OS版本，就可以自動進行安裝</p>
+							<p>之前為了能夠在執行完 ansible playbook 後，能有個log 可以看</p>
 
-<p>安裝完成後，會自動重新開機，接著就用ansible來做user環境設定</p>
+<p>所以在每次執行的時候，都要加入 tee 的指令</p>
 
-<p>PXE的部份本來是沒有什麼問題，自動安裝系統的部份都做好了</p>
+<p>像是</p>
 
-<p>可是因為這次的量比較多，想說讓每一台在完成PXE安裝後的第一次重開機</p>
+<pre><code>ANSIBLE_CONFIG=/home/D/ansiblecontrol/ansible.cfg /usr/local/bin/ansible-playbook  /home/D/ansiblecontrol/playbook.user_client.yml --vault-password-file=/home/D/ansiblecontrol/vault.passwd -i /home/D/ansiblecontrol/inventory/production -f1 --limit tyuserclients |tee /tmp/tyuserclients.log
+</code></pre>
 
-<p>就送出一封郵件來通知我，說已經完成安裝，可以執行ansible 了</p>
+<p>一直都是放在crontab 裡面執行，也就沒有去管他</p>
 
-<p>看似很簡單的一件事情，卻搞了我兩天&hellip;.</p>
+<p>反正也沒有人關心結果怎樣 (攤手</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/another-way-to-keep-ansible-log/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -417,12 +421,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">23 July</span>
+						<span class="date">31 July</span>
 
 						
 							
@@ -438,26 +442,34 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/ansible">ansible</a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/ "> [ansible] 用 ip 位置判斷是否要執行task /ansible run task depends on ipaddr </a>
+							<a href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/ "> [筆記] 用pxe 安裝系統，完成後送出郵件通知 / send mail notification after pxe install </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</p>
+							<p>最近有個任務，需要大量安裝client</p>
 
-<p>在有權限使用proxy 服務的user的環境中，加入proxy 的設定</p>
+<p>想用PXE來處理，只要user開機按F12(acer 桌機) 選擇PXE Boot</p>
 
-<p>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</p>
+<p>然後選擇OS版本，就可以自動進行安裝</p>
 
-<p>proxy server 那邊是採用ip 來控制，所以這邊也跟著用 ip 來判斷要不要修改 /etc/environment</p>
+<p>安裝完成後，會自動重新開機，接著就用ansible來做user環境設定</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>PXE的部份本來是沒有什麼問題，自動安裝系統的部份都做好了</p>
+
+<p>可是因為這次的量比較多，想說讓每一台在完成PXE安裝後的第一次重開機</p>
+
+<p>就送出一封郵件來通知我，說已經完成安裝，可以執行ansible 了</p>
+
+<p>看似很簡單的一件事情，卻搞了我兩天&hellip;.</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/send-mail-to-notify-after-pxe-install/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -475,12 +487,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/ansible-selectattr-from-list-in-dictionary/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">01 July</span>
+						<span class="date">23 July</span>
 
 						
 							
@@ -496,24 +508,26 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/ansible">Ansible</a>
+							<a href="/categories/ansible">ansible</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/ansible-selectattr-from-list-in-dictionary/ "> [ansible] 引用事先定義好的yaml檔裡面的變數 - Ansible Selectattr From List in Dictionary file </a>
+							<a href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/ "> [ansible] 用 ip 位置判斷是否要執行task /ansible run task depends on ipaddr </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>在ansible中，關於如何引用自定義的變數，一直讓我很頭疼</p>
+							<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</p>
 
-<p>尤其是有牽涉到從外部導入yaml檔案時，更是常常讓我不知道到底該怎麼抓出想要的變數</p>
+<p>在有權限使用proxy 服務的user的環境中，加入proxy 的設定</p>
 
-<p>這次還是用selectattr 來處理，希望下次能夠記得&hellip;</p>
+<p>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-selectattr-from-list-in-dictionary/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>proxy server 那邊是採用ip 來控制，所以這邊也跟著用 ip 來判斷要不要修改 /etc/environment</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-run-task-depends-on-ipaddr/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -531,12 +545,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/remote-management-system-meshcentral/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/ansible-selectattr-from-list-in-dictionary/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">20 June</span>
+						<span class="date">01 July</span>
 
 						
 							
@@ -552,28 +566,24 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+							<a href="/categories/ansible">Ansible</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/remote-management-system-meshcentral/ "> linux底下遠端遙控&amp;管理的好用系統 Meshcentral / Remote Management &amp; control system Meshcentral </a>
+							<a href="https://h.cowbay.org/post/ansible-selectattr-from-list-in-dictionary/ "> [ansible] 引用事先定義好的yaml檔裡面的變數 - Ansible Selectattr From List in Dictionary file </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>之前在LAN/windows環境下，一直都是用ultravnc/winvnc/tigervnc之類的VNC軟體</p>
-
-<p>但是如果要過 internet ，就會碰到各種開port的問題</p>
-
-<p>在這種環境下，就有了當時 teamviewer 的橫空出世</p>
+							<p>在ansible中，關於如何引用自定義的變數，一直讓我很頭疼</p>
 
-<p>解決了開PORT的問題，讓被控端(通常是資訊技術相對弱勢，需要接受幫助的一方)不需要懂太多</p>
+<p>尤其是有牽涉到從外部導入yaml檔案時，更是常常讓我不知道到底該怎麼抓出想要的變數</p>
 
-<p>只要下載teamviewer被控端，開啟後報ID 給協助者就好了</p>
+<p>這次還是用selectattr 來處理，希望下次能夠記得&hellip;</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/remote-management-system-meshcentral/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-selectattr-from-list-in-dictionary/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -827,7 +837,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/page/5/index.html b/public/page/5/index.html
index 680e7b64..e1aa5c09 100644
--- a/public/page/5/index.html
+++ b/public/page/5/index.html
@@ -22,8 +22,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
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-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,12 +288,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/install-asus-10g-nic-in-proxmox/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-13.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/remote-management-system-meshcentral/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-5.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">17 June</span>
+						<span class="date">20 June</span>
 
 						
 							
@@ -309,30 +309,28 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/proxmox">Proxmox</a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/install-asus-10g-nic-in-proxmox/ "> Install Asus 10G NIC XG-C100C in Proxmox </a>
+							<a href="https://h.cowbay.org/post/remote-management-system-meshcentral/ "> linux底下遠端遙控&amp;管理的好用系統 Meshcentral / Remote Management &amp; control system Meshcentral </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>前幾天接的一個case</p>
+							<p>之前在LAN/windows環境下，一直都是用ultravnc/winvnc/tigervnc之類的VNC軟體</p>
 
-<p>因為費用的關係，所以沒有考慮用傳統定義上的伺服器(DELL R640)</p>
+<p>但是如果要過 internet ，就會碰到各種開port的問題</p>
 
-<p>改採用比較高階一點的洋垃圾，規格大概是 Intel E5-2680V2 x2 + 64G RAM + 128G SSD x2 (OS) + 960G SSD x4 (raid 10 , zfs)</p>
+<p>在這種環境下，就有了當時 teamviewer 的橫空出世</p>
 
-<p>storage 選擇QNAP NAS  TS-932X + 960G SSD x 4 (raid 10 , NFS) + QNAP 10G Switch QSW-1280C-8C</p>
+<p>解決了開PORT的問題，讓被控端(通常是資訊技術相對弱勢，需要接受幫助的一方)不需要懂太多</p>
 
-<p>既然storage這邊選用了10G的機種，伺服器上當然也要增加10G網卡</p>
+<p>只要下載teamviewer被控端，開啟後報ID 給協助者就好了</p>
 
-<p>一樣，成本考量，就不用INTEL 了，買了這張 ASUS 10G 網卡</p>
-
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-asus-10g-nic-in-proxmox/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/remote-management-system-meshcentral/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -350,12 +348,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/change-timezone-in-docker/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-3.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/install-asus-10g-nic-in-proxmox/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-13.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
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-						<span class="date">21 May</span>
+						<span class="date">17 June</span>
 
 						
 							
@@ -371,22 +369,30 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+							<a href="/categories/proxmox">Proxmox</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/change-timezone-in-docker/ "> [筆記] 修改 docker 容器內的時區 - Change Timezone in Docker </a>
+							<a href="https://h.cowbay.org/post/install-asus-10g-nic-in-proxmox/ "> Install Asus 10G NIC XG-C100C in Proxmox </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近一直在玩一些docker，不過老是會碰到歪果扔寫的東西，時區都不一致</p>
+							<p>前幾天接的一個case</p>
 
-<p>有的用 UTC，有的用localtime，就是沒碰到用 Asia/Taipei 的&hellip;.</p>
+<p>因為費用的關係，所以沒有考慮用傳統定義上的伺服器(DELL R640)</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/change-timezone-in-docker/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>改採用比較高階一點的洋垃圾，規格大概是 Intel E5-2680V2 x2 + 64G RAM + 128G SSD x2 (OS) + 960G SSD x4 (raid 10 , zfs)</p>
+
+<p>storage 選擇QNAP NAS  TS-932X + 960G SSD x 4 (raid 10 , NFS) + QNAP 10G Switch QSW-1280C-8C</p>
+
+<p>既然storage這邊選用了10G的機種，伺服器上當然也要增加10G網卡</p>
+
+<p>一樣，成本考量，就不用INTEL 了，買了這張 ASUS 10G 網卡</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-asus-10g-nic-in-proxmox/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -404,12 +410,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/transfer-file-content-using-xclip-in-terminal/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/change-timezone-in-docker/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-3.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">17 May</span>
+						<span class="date">21 May</span>
 
 						
 							
@@ -425,26 +431,22 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/linux">linux</a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/transfer-file-content-using-xclip-in-terminal/ "> Transfer File Content Using Xclip in Terminal </a>
+							<a href="https://h.cowbay.org/post/change-timezone-in-docker/ "> [筆記] 修改 docker 容器內的時區 - Change Timezone in Docker </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>工作上常會需要用ssh登入遠端主機檢查LOG，有必要的時候，還要把log複製回本機來處理。</p>
-
-<p>以前都是傻傻的用 scp 傳檔案</p>
-
-<p>之前就記得有這個xclip/xsel 可以用，但是一直沒有弄清楚怎麼執行</p>
+							<p>最近一直在玩一些docker，不過老是會碰到歪果扔寫的東西，時區都不一致</p>
 
-<p>早上研究了一下，順便做個筆記。</p>
+<p>有的用 UTC，有的用localtime，就是沒碰到用 Asia/Taipei 的&hellip;.</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/transfer-file-content-using-xclip-in-terminal/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/change-timezone-in-docker/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -462,12 +464,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/inx-collect-detail-hardware-info/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/transfer-file-content-using-xclip-in-terminal/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">23 April</span>
+						<span class="date">17 May</span>
 
 						
 							
@@ -483,28 +485,26 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+							<a href="/categories/linux">linux</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/inx-collect-detail-hardware-info/ "> [筆記] inxi 蒐集詳盡的硬體資訊 / inxi Collect Detail Hardware Info </a>
+							<a href="https://h.cowbay.org/post/transfer-file-content-using-xclip-in-terminal/ "> Transfer File Content Using Xclip in Terminal </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近因為一直碰到硬碟故障的問題，算起來那一批同時購買的5X顆 seagate 2T硬碟，已經有一半以上故障返修了&hellip;.</p>
-
-<p>然後又因為一直沒有添購新的硬碟，只能用這些快過保/已過保的撐著</p>
+							<p>工作上常會需要用ssh登入遠端主機檢查LOG，有必要的時候，還要把log複製回本機來處理。</p>
 
-<p>所以最近不斷的在更換機器內的硬碟，而且還沒有熱插拔！</p>
+<p>以前都是傻傻的用 scp 傳檔案</p>
 
-<p>也導致原本負責處理盤點資產的同事困擾，因為跟手邊的紀錄已經對不起來了</p>
+<p>之前就記得有這個xclip/xsel 可以用，但是一直沒有弄清楚怎麼執行</p>
 
-<p>然後就變成要對資產的時候，需要一台一台登入，然後去下不同的指令，取得想要的硬體資訊，超級麻煩的！</p>
+<p>早上研究了一下，順便做個筆記。</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/inx-collect-detail-hardware-info/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/transfer-file-content-using-xclip-in-terminal/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -522,7 +522,7 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/log-all-bash-commands/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/inx-collect-detail-hardware-info/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
@@ -549,20 +549,22 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/log-all-bash-commands/ "> [筆記] 紀錄所有下過的指令、時間 / Log All commands with timestamp </a>
+							<a href="https://h.cowbay.org/post/inx-collect-detail-hardware-info/ "> [筆記] inxi 蒐集詳盡的硬體資訊 / inxi Collect Detail Hardware Info </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>今天發生一件有點詭異的事情，本來應該要經過某個指令才會產生的檔案</p>
+							<p>最近因為一直碰到硬碟故障的問題，算起來那一批同時購買的5X顆 seagate 2T硬碟，已經有一半以上故障返修了&hellip;.</p>
+
+<p>然後又因為一直沒有添購新的硬碟，只能用這些快過保/已過保的撐著</p>
 
-<p>居然不知為何自己產生了，在我記憶中沒有去執行過那個指令</p>
+<p>所以最近不斷的在更換機器內的硬碟，而且還沒有熱插拔！</p>
 
-<p>翻了一下 bash_history ，裡面也只有下過哪些指令，沒有紀錄時間，完全沒有參考價值(攤手)</p>
+<p>也導致原本負責處理盤點資產的同事困擾，因為跟手邊的紀錄已經對不起來了</p>
 
-<p>所以翻了一下網路，至少把這兩台主要跑ansible的機器的log功能補上紀錄所有指令以及時間的部份</p>
+<p>然後就變成要對資產的時候，需要一台一台登入，然後去下不同的指令，取得想要的硬體資訊，超級麻煩的！</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/log-all-bash-commands/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/inx-collect-detail-hardware-info/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -818,7 +820,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/page/6/index.html b/public/page/6/index.html
index b12d99f4..526b6ef6 100644
--- a/public/page/6/index.html
+++ b/public/page/6/index.html
@@ -22,8 +22,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,12 +288,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/log-all-bash-commands/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">01 April</span>
+						<span class="date">23 April</span>
 
 						
 							
@@ -315,18 +315,20 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/ "> [筆記] 解決無法建立zpool 的錯誤 / Fix Zpool Device Busy Using dmsetup </a>
+							<a href="https://h.cowbay.org/post/log-all-bash-commands/ "> [筆記] 紀錄所有下過的指令、時間 / Log All commands with timestamp </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>今天把其中一台proxmox 加上10G 光纖網卡，準備和另一台proxmox 組成10G 環境進行測試</p>
+							<p>今天發生一件有點詭異的事情，本來應該要經過某個指令才會產生的檔案</p>
 
-<p>想說把本機的zpool 拆掉，重新建立一個raid0 的空間來做clone/migrate</p>
+<p>居然不知為何自己產生了，在我記憶中沒有去執行過那個指令</p>
 
-<p>可是一直出現device busy的錯誤訊息</p>
+<p>翻了一下 bash_history ，裡面也只有下過哪些指令，沒有紀錄時間，完全沒有參考價值(攤手)</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>所以翻了一下網路，至少把這兩台主要跑ansible的機器的log功能補上紀錄所有指令以及時間的部份</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/log-all-bash-commands/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -344,12 +346,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/transfer-cent62-using-rsync/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">27 March</span>
+						<span class="date">01 April</span>
 
 						
 							
@@ -371,16 +373,18 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/transfer-cent62-using-rsync/ "> [筆記] 用rsync 移轉 centos 6.2的老機器 Transfer Cent6.2 using rsync </a>
+							<a href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/ "> [筆記] 解決無法建立zpool 的錯誤 / Fix Zpool Device Busy Using dmsetup </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>公司的一台老伺服器空間不足了，要執行指令都會中斷，所以想要擴充空間。</p>
+							<p>今天把其中一台proxmox 加上10G 光纖網卡，準備和另一台proxmox 組成10G 環境進行測試</p>
 
-<p>看起來不難搞，事實上&hellip;..</p>
+<p>想說把本機的zpool 拆掉，重新建立一個raid0 的空間來做clone/migrate</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/transfer-cent62-using-rsync/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>可是一直出現device busy的錯誤訊息</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -398,12 +402,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/command_to_test_main_ssl/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/transfer-cent62-using-rsync/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">20 March</span>
+						<span class="date">27 March</span>
 
 						
 							
@@ -417,21 +421,24 @@ if (!doNotTrack) {
 
 
 						
+						<span> / </span>
+						<span class="category">
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+						</span>
+						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/command_to_test_main_ssl/ "> [筆記] 測試mail server 的SSL憑證的指令 Command to test mailserver SSL </a>
+							<a href="https://h.cowbay.org/post/transfer-cent62-using-rsync/ "> [筆記] 用rsync 移轉 centos 6.2的老機器 Transfer Cent6.2 using rsync </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>今天老闆出國，發slack說手機不能寄信，看了一下，似乎是因為用GMAIL的APP來收信</p>
-
-<p>然後google 不知道跟人家改了什麼，結果不接受原本的認證了&hellip; WTF &hellip;.</p>
+							<p>公司的一台老伺服器空間不足了，要執行指令都會中斷，所以想要擴充空間。</p>
 
-<p>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
+<p>看起來不難搞，事實上&hellip;..</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/command_to_test_main_ssl/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/transfer-cent62-using-rsync/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -449,12 +456,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-12.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/command_to_test_main_ssl/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-10.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">11 March</span>
+						<span class="date">20 March</span>
 
 						
 							
@@ -468,28 +475,21 @@ if (!doNotTrack) {
 
 
 						
-						<span> / </span>
-						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
-						</span>
-						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/ "> Install Timeshift on Ubuntu1804 </a>
+							<a href="https://h.cowbay.org/post/command_to_test_main_ssl/ "> [筆記] 測試mail server 的SSL憑證的指令 Command to test mailserver SSL </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近要開始測試client安裝 ubuntu 18.04 的 ansible playbook</p>
-
-<p>因為要不斷的修正，所以想到一直有在自己電腦上執行的timeshift這個軟體</p>
+							<p>今天老闆出國，發slack說手機不能寄信，看了一下，似乎是因為用GMAIL的APP來收信</p>
 
-<p>可以很簡單快速的備份、恢復系統狀態</p>
+<p>然後google 不知道跟人家改了什麼，結果不接受原本的認證了&hellip; WTF &hellip;.</p>
 
-<p>可是不知道為什麼，在ubuntu 18.04 上安裝就是會發生錯誤&hellip;.</p>
+<p>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/command_to_test_main_ssl/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -507,12 +507,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-12.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">16 January</span>
+						<span class="date">11 March</span>
 
 						
 							
@@ -534,16 +534,20 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/ "> 用DELL 6 i/R 建立RAID，並在上面安裝ubuntu 18.04  </a>
+							<a href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/ "> Install Timeshift on Ubuntu1804 </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>買了一張 DELL 6/iR 低階的raid 卡</p>
+							<p>最近要開始測試client安裝 ubuntu 18.04 的 ansible playbook</p>
 
-<p>來測試把系統裝在硬體做的RAID上，結果沒想到居然不能開機&hellip;</p>
+<p>因為要不斷的修正，所以想到一直有在自己電腦上執行的timeshift這個軟體</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>可以很簡單快速的備份、恢復系統狀態</p>
+
+<p>可是不知道為什麼，在ubuntu 18.04 上安裝就是會發生錯誤&hellip;.</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -801,7 +805,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/page/7/index.html b/public/page/7/index.html
index 8165a415..4748a6ad 100644
--- a/public/page/7/index.html
+++ b/public/page/7/index.html
@@ -22,8 +22,8 @@
         "accountablePerson" : "",
         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
 <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.3.1/css/all.css" integrity="sha384-mzrmE5qonljUremFsqc01SB46JvROS7bZs3IO2EmfFsd15uHvIt+Y8vEf7N7fWAU" crossorigin="anonymous">
 
-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,7 +288,7 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-14.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-11.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
@@ -315,18 +315,16 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/ "> Ubuntu 1804 Install Root on Raid </a>
+							<a href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/ "> 用DELL 6 i/R 建立RAID，並在上面安裝ubuntu 18.04  </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近在弄一台機器，想要把ubuntu 18.04 安裝在software raid上</p>
-
-<p>因為新開的機器大部分都是在proxmox上，所以很少碰實體機器了</p>
+							<p>買了一張 DELL 6/iR 低階的raid 卡</p>
 
-<p>結果在安裝過程中，做raid碰到一些問題，來紀錄一下</p>
+<p>來測試把系統裝在硬體做的RAID上，結果沒想到居然不能開機&hellip;</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -344,12 +342,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-2.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-14.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">13 December</span>
+						<span class="date">16 January</span>
 
 						
 							
@@ -371,20 +369,18 @@ if (!doNotTrack) {
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/ "> [筆記] Freenas Smartd 啟動失敗 Smartd Failed to Start in Freenas </a>
+							<a href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/ "> Ubuntu 1804 Install Root on Raid </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>這兩天在弄兩台Freenas ，準備當作Proxmox 的Storage &amp; Server Backup</p>
-
-<p>因為伺服器的限制，只能接六個SATA，我接了六個2T的硬碟做raid10</p>
+							<p>最近在弄一台機器，想要把ubuntu 18.04 安裝在software raid上</p>
 
-<p>然後把Freenas 安裝在隨身碟上</p>
+<p>因為新開的機器大部分都是在proxmox上，所以很少碰實體機器了</p>
 
-<p>不過會一直出現Smartd failed to start 的錯誤訊息</p>
+<p>結果在安裝過程中，做raid碰到一些問題，來紀錄一下</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -402,12 +398,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-1.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-2.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">12 December</span>
+						<span class="date">13 December</span>
 
 						
 							
@@ -423,28 +419,26 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%A2%8E%E5%BF%B5">碎念</a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/ "> [碎念] mdadm 超級慢的rebuild 速度 Incredibly Slow mdadm Rebuild </a>
+							<a href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/ "> [筆記] Freenas Smartd 啟動失敗 Smartd Failed to Start in Freenas </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>最近在做一台老機器的P2V</p>
-
-<p>偏偏user說不能關機，所以我用dd + ssh 做線上移轉</p>
+							<p>這兩天在弄兩台Freenas ，準備當作Proxmox 的Storage &amp; Server Backup</p>
 
-<p>這部份有空再來寫</p>
+<p>因為伺服器的限制，只能接六個SATA，我接了六個2T的硬碟做raid10</p>
 
-<p>只是因為原來的設定有用mdadm 做raid1</p>
+<p>然後把Freenas 安裝在隨身碟上</p>
 
-<p>這部份導致移轉過去proxmox 後，會出現raid degrade 導致無法正常開機</p>
+<p>不過會一直出現Smartd failed to start 的錯誤訊息</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -462,12 +456,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/create-portable-vim-environment/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-8.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-1.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">07 December</span>
+						<span class="date">12 December</span>
 
 						
 							
@@ -483,26 +477,28 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+							<a href="/categories/%E7%A2%8E%E5%BF%B5">碎念</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/create-portable-vim-environment/ "> [筆記] 建立一個帶著走的 VIM 環境 Creating portable Vim environment </a>
+							<a href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/ "> [碎念] mdadm 超級慢的rebuild 速度 Incredibly Slow mdadm Rebuild </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>因為工作的關係，現在很多時間都花在VIM的操作上</p>
+							<p>最近在做一台老機器的P2V</p>
 
-<p>所以之前花了滿多時間，調整出一個適合自己的VIM環境</p>
+<p>偏偏user說不能關機，所以我用dd + ssh 做線上移轉</p>
 
-<p>原本的作法是把這個設定好的環境，丟到自己建立的gitea 上面</p>
+<p>這部份有空再來寫</p>
 
-<p>然後每到一台新的機器，就要去clone 下來</p>
+<p>只是因為原來的設定有用mdadm 做raid1</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/create-portable-vim-environment/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+<p>這部份導致移轉過去proxmox 後，會出現raid degrade 導致無法正常開機</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
 				</div>
@@ -520,12 +516,12 @@ if (!doNotTrack) {
 			
 
 				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/synology-ds415-repair-cost/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-13.jpg"></div></a>
+				<a class="featured-image-link" href="https://h.cowbay.org/post/create-portable-vim-environment/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-8.jpg"></div></a>
 
 				
 				<div class="excerpt-container">
 					<div class="excerpt-meta">
-						<span class="date">04 December</span>
+						<span class="date">07 December</span>
 
 						
 							
@@ -541,34 +537,26 @@ if (!doNotTrack) {
 						
 						<span> / </span>
 						<span class="category">
-							<a href="/categories/%E7%BE%A4%E6%9A%89">群暉</a>
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
 						</span>
 						
 					</div>
 					<div class='excerpt-header'>
 						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/synology-ds415-repair-cost/ "> [雜念] 群暉 Synology NAS DS 415&#43; 誇張的維修費用 </a>
+							<a href="https://h.cowbay.org/post/create-portable-vim-environment/ "> [筆記] 建立一個帶著走的 VIM 環境 Creating portable Vim environment </a>
 						</h2>
 					</div>
 					<div class='excerpt-content'>
 						<article>
-							<p>前幾天公司的一台 Synology DS 415+ 發生異常</p>
-
-<p>注意到的時候，四顆硬碟燈號都不斷的在閃爍</p>
-
-<p>但是已經無法登入系統</p>
-
-<p>重開機之後更慘，四顆硬碟燈號全部橘燈恆亮</p>
-
-<p>底下的電源藍燈不斷的在閃爍</p>
+							<p>因為工作的關係，現在很多時間都花在VIM的操作上</p>
 
-<p>雖然我一再表示不希望送修了</p>
+<p>所以之前花了滿多時間，調整出一個適合自己的VIM環境</p>
 
-<p>一來是已經過保，二來是DS415+ 本身就有intel bug，三來是因為對synology的NAS 實在沒有愛&hellip;</p>
+<p>原本的作法是把這個設定好的環境，丟到自己建立的gitea 上面</p>
 
-<p>不過主管還是希望能夠先問群暉維修的費用多少</p>
+<p>然後每到一台新的機器，就要去clone 下來</p>
 
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/synology-ds415-repair-cost/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/create-portable-vim-environment/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
 						</article>
 					</div>
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@@ -824,7 +812,7 @@ if (!doNotTrack) {
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   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
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diff --git a/public/page/8/index.html b/public/page/8/index.html
index 3051e5d1..1cbb31d7 100644
--- a/public/page/8/index.html
+++ b/public/page/8/index.html
@@ -22,8 +22,8 @@
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         "copyrightHolder" : "",
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-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
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-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
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 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,6 +288,72 @@ if (!doNotTrack) {
 			
 
 				
+				<a class="featured-image-link" href="https://h.cowbay.org/post/synology-ds415-repair-cost/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-13.jpg"></div></a>
+
+				
+				<div class="excerpt-container">
+					<div class="excerpt-meta">
+						<span class="date">04 December</span>
+
+						
+							
+							<span> / </span>
+						<span class="author">
+						<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
+						</span>
+							
+						
+
+
+
+						
+						<span> / </span>
+						<span class="category">
+							<a href="/categories/%E7%BE%A4%E6%9A%89">群暉</a>
+						</span>
+						
+					</div>
+					<div class='excerpt-header'>
+						<h2 class='excerpt-title'>
+							<a href="https://h.cowbay.org/post/synology-ds415-repair-cost/ "> [雜念] 群暉 Synology NAS DS 415&#43; 誇張的維修費用 </a>
+						</h2>
+					</div>
+					<div class='excerpt-content'>
+						<article>
+							<p>前幾天公司的一台 Synology DS 415+ 發生異常</p>
+
+<p>注意到的時候，四顆硬碟燈號都不斷的在閃爍</p>
+
+<p>但是已經無法登入系統</p>
+
+<p>重開機之後更慘，四顆硬碟燈號全部橘燈恆亮</p>
+
+<p>底下的電源藍燈不斷的在閃爍</p>
+
+<p>雖然我一再表示不希望送修了</p>
+
+<p>一來是已經過保，二來是DS415+ 本身就有intel bug，三來是因為對synology的NAS 實在沒有愛&hellip;</p>
+
+<p>不過主管還是希望能夠先問群暉維修的費用多少</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/synology-ds415-repair-cost/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+						</article>
+					</div>
+				</div>
+			</div>
+			
+  
+  
+    
+  
+  
+	
+	
+		<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+			
+			
+
+				
 				<a class="featured-image-link" href="https://h.cowbay.org/post/10g-lab-using-proxmox-and-mellanox/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-03.jpg"></div></a>
 
 				
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-		<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
-			
+	<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+		
 			
 
 				
@@ -407,8 +473,8 @@ if (!doNotTrack) {
   
 	
 	
-	<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
-		
+		<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+			
 			
 
 				
@@ -502,8 +568,8 @@ if (!doNotTrack) {
   
 	
 	
-		<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
-			
+	<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
+		
 			
 
 				
@@ -553,64 +619,6 @@ if (!doNotTrack) {
 				</div>
 			</div>
 			
-  
-  
-    
-  
-  
-	
-	
-	<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured odd excerpt">
-		
-			
-
-				
-				<a class="featured-image-link" href="https://h.cowbay.org/post/copy_role_in_pgsql/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
-
-				
-				<div class="excerpt-container">
-					<div class="excerpt-meta">
-						<span class="date">12 November</span>
-
-						
-							
-							<span> / </span>
-						<span class="author">
-						<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
-						</span>
-							
-						
-
-
-
-						
-						<span> / </span>
-						<span class="category">
-							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
-						</span>
-						
-					</div>
-					<div class='excerpt-header'>
-						<h2 class='excerpt-title'>
-							<a href="https://h.cowbay.org/post/copy_role_in_pgsql/ "> PostgreSQL 直接從已經存在的使用者複製權限到另一個使用者 </a>
-						</h2>
-					</div>
-					<div class='excerpt-content'>
-						<article>
-							<p>因為工作上的需求，有個資料庫需要開放給不同team的人去存取</p>
-
-<p>雖然都是在同一台機器上的同一個資料庫</p>
-
-<p>但是希望能夠不同team的人用不同的資料庫使用者</p>
-
-<p>這樣萬一出事，會比較好抓兇手？？</p>
-
-							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/copy_role_in_pgsql/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
-						</article>
-					</div>
-				</div>
-			</div>
-			
 		</div>
 
   
@@ -859,7 +867,7 @@ if (!doNotTrack) {
   </div>
   <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828465"></script>
 
 </body>
 </html>
diff --git a/public/page/9/index.html b/public/page/9/index.html
index fc470b7f..01d6efe4 100644
--- a/public/page/9/index.html
+++ b/public/page/9/index.html
@@ -22,8 +22,8 @@
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         "copyrightHolder" : "",
         "copyrightYear" : "2019",
-        "datePublished": "2019-12-18 14:44:27 \x2b0800 CST",
-        "dateModified" : "2019-12-18 14:44:27 \x2b0800 CST",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
+        "dateModified" : "2019-12-20 14:31:42 \x2b0800 CST",
         "url" : "https:\/\/h.cowbay.org\/",
         "wordCount" : "0",
         "image" : "https://h.cowbay.org%!s(\u003cnil\u003e)"",
@@ -46,9 +46,9 @@
 
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-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -288,6 +288,64 @@ if (!doNotTrack) {
 			
 
 				
+				<a class="featured-image-link" href="https://h.cowbay.org/post/copy_role_in_pgsql/"><div class='featured-image lazy lazy-bg-image' data-background="https://h.cowbay.org/images/post-default-7.jpg"></div></a>
+
+				
+				<div class="excerpt-container">
+					<div class="excerpt-meta">
+						<span class="date">12 November</span>
+
+						
+							
+							<span> / </span>
+						<span class="author">
+						<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
+						</span>
+							
+						
+
+
+
+						
+						<span> / </span>
+						<span class="category">
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+						</span>
+						
+					</div>
+					<div class='excerpt-header'>
+						<h2 class='excerpt-title'>
+							<a href="https://h.cowbay.org/post/copy_role_in_pgsql/ "> PostgreSQL 直接從已經存在的使用者複製權限到另一個使用者 </a>
+						</h2>
+					</div>
+					<div class='excerpt-content'>
+						<article>
+							<p>因為工作上的需求，有個資料庫需要開放給不同team的人去存取</p>
+
+<p>雖然都是在同一台機器上的同一個資料庫</p>
+
+<p>但是希望能夠不同team的人用不同的資料庫使用者</p>
+
+<p>這樣萬一出事，會比較好抓兇手？？</p>
+
+							<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/copy_role_in_pgsql/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+						</article>
+					</div>
+				</div>
+			</div>
+			
+  
+  
+    
+  
+  
+	
+	
+		<div class="post type-post status-publish format-standard has-post-thumbnail hentry category-design tag-memories tag-normal-post tag-standard-2 excerpt zoom full-without-featured even excerpt">
+			
+			
+
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diff --git a/public/post/10g-lab-using-proxmox-and-mellanox/index.html b/public/post/10g-lab-using-proxmox-and-mellanox/index.html
index 3801ee38..3d28e3db 100644
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-<link href="https://h.cowbay.org/css/style.css?v=1576652202" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
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diff --git a/public/post/accidentally-typed-an-extra-space-in-ansible-playbook/index.html b/public/post/accidentally-typed-an-extra-space-in-ansible-playbook/index.html
index 182f9919..4ec2a7d0 100644
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-<link href="https://h.cowbay.org/css/custom.css?v=1576652201" rel="stylesheet" type='text/css' media='all'>
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@@ -684,7 +684,7 @@ title="pinterest icon"></i>
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diff --git a/public/post/index.xml b/public/post/index.xml
index ac83a733..31bc73c7 100644
--- a/public/post/index.xml
+++ b/public/post/index.xml
@@ -6,11 +6,30 @@
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     <generator>Hugo -- gohugo.io</generator>
     <language>en-us</language>
-    <lastBuildDate>Wed, 18 Dec 2019 14:44:27 +0800</lastBuildDate>
+    <lastBuildDate>Fri, 20 Dec 2019 14:31:42 +0800</lastBuildDate>
     
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+    <item>
+      <title>[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11</title>
+      <link>https://h.cowbay.org/post/test-pg_prewarm/</link>
+      <pubDate>Fri, 20 Dec 2019 14:31:42 +0800</pubDate>
+      
+      <guid>https://h.cowbay.org/post/test-pg_prewarm/</guid>
+      <description>&lt;p&gt;老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面&lt;/p&gt;
+
+&lt;p&gt;但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)&lt;/p&gt;
+
+&lt;p&gt;在找資料的時候，發現了這個postgresql 的 pg_prewarm extension&lt;/p&gt;
+
+&lt;p&gt;好像有點意思？就來測試看看吧！&lt;/p&gt;
+
+&lt;p&gt;只是目前還不知道該怎麼解讀測試的數據就是了&amp;hellip;&lt;/p&gt;
+
+&lt;p&gt;幹！林北真的不是 DBA 啦 =.=&lt;/p&gt;</description>
+    </item>
+    
     <item>
       <title>[筆記] 在ansible playbook中不小心多打了一個空格 / Accidentally Typed an Extra Space in Ansible Playbook</title>
       <link>https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/</link>
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diff --git a/public/post/inx-collect-detail-hardware-info/index.html b/public/post/inx-collect-detail-hardware-info/index.html
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diff --git a/public/post/test-pg_prewarm/index.html b/public/post/test-pg_prewarm/index.html
new file mode 100644
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+        "name" : "[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 \/ test pg_prewarm in postgresql 11",
+        "headline" : "[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 \/ test pg_prewarm in postgresql 11",
+        "description" : "\x3cp\x3e老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面\x3c\/p\x3e\n\n\x3cp\x3e但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)\x3c\/p\x3e\n\n\x3cp\x3e在找資料的時候，發現了這個postgresql 的 pg_prewarm extension\x3c\/p\x3e\n\n\x3cp\x3e好像有點意思？就來測試看看吧！\x3c\/p\x3e\n\n\x3cp\x3e只是目前還不知道該怎麼解讀測試的數據就是了\x26hellip;\x3c\/p\x3e\n\n\x3cp\x3e幹！林北真的不是 DBA 啦 =.=\x3c\/p\x3e",
+        "inLanguage" : "en",
+        "author" : "Eric Chang",
+        "creator" : "Eric Chang",
+        "publisher": "Eric Chang",
+        "accountablePerson" : "Eric Chang",
+        "copyrightHolder" : "Eric Chang",
+        "copyrightYear" : "2019",
+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
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+          <h1 class='entry-title'> [筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11</h1>
+        </div>
+        <div class="entry-container">
+          <div class="entry-content">
+            <article>
+              <p>老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面</p>
+
+<p>但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)</p>
+
+<p>在找資料的時候，發現了這個postgresql 的 pg_prewarm extension</p>
+
+<p>好像有點意思？就來測試看看吧！</p>
+
+<p>只是目前還不知道該怎麼解讀測試的數據就是了&hellip;</p>
+
+<p>幹！林北真的不是 DBA 啦 =.=</p>
+
+<p>安裝系統、postgresql 資料庫什麼的就不提了，那不是這次的重點</p>
+
+<h4 id="修改-postgresql-conf">修改 postgresql.conf</h4>
+
+<p>編輯postgresql.conf，開啟平行處理以及設定可用記憶體容量</p>
+
+<p>這台測試機的環境是一台三代i7 , 24G RAM , 240G SSD，安裝debian 10(buster)</p>
+
+<pre><code># load libiriaes
+# 其實這次不會用到pg_stat_statements ，不過出於習慣，還是加入開機自動載入吧
+shared_preload_libraries = 'pg_stat_statements'
+
+#------------------------------------------------------------------------------
+# CUSTOMIZED OPTIONS
+#------------------------------------------------------------------------------
+
+max_connections = 20
+shared_buffers = 6GB
+effective_cache_size = 18GB
+maintenance_work_mem = 1536MB
+checkpoint_completion_target = 0.7
+wal_buffers = 16MB
+default_statistics_target = 100
+random_page_cost = 1.1
+effective_io_concurrency = 200
+work_mem = 78643kB
+min_wal_size = 1GB
+max_wal_size = 2GB
+max_worker_processes = 8
+max_parallel_workers_per_gather = 4
+max_parallel_workers = 8
+</code></pre>
+
+<p>重新啟動postgresql ，準備開始測試囉！</p>
+
+<p>轉換成 postgres 身份後，進入 psql</p>
+
+<h4 id="建立測試資料庫">建立測試資料庫</h4>
+
+<pre><code>postgres=# create database test;
+CREATE DATABASE
+postgres=#
+</code></pre>
+
+<h4 id="連接測試資料庫-建立pg-prewarm-extension">連接測試資料庫、建立pg_prewarm extension</h4>
+
+<pre><code>postgres=# \c test ;
+You are now connected to database &quot;test&quot; as user &quot;postgres&quot;.
+test=# CREATE EXTENSION pg_prewarm;
+CREATE EXTENSION
+test=# 
+</code></pre>
+
+<h4 id="建立測試資料表-塞入500萬筆資料">建立測試資料表，塞入500萬筆資料</h4>
+
+<pre><code>test=# \timing
+Timing is on.
+test=# CREATE TABLE test_tbl AS
+SELECT floor(random() * (9923123) + 1)::int FROM generate_series(1, 5000000) AS id;
+SELECT 5000000
+Time: 2940.602 ms (00:02.941)
+test=#
+</code></pre>
+
+<h4 id="檢查看看剛剛建立的table-用了多少空間">檢查看看剛剛建立的table 用了多少空間</h4>
+
+<p>哎呀，看起來用得不多啊</p>
+
+<pre><code>test=# SELECT pg_size_pretty(pg_relation_size('test_tbl'));
+ 173 MB
+</code></pre>
+
+<p><strong>玩大一點，塞個一億筆資料好了</strong></p>
+
+<pre><code>test=# drop table test_tbl;
+Time: 0.361 ms
+test=# CREATE TABLE test_tbl AS
+SELECT floor(random() * (99343) + 1)::int FROM generate_series(1, 100000000) AS id;
+SELECT 100000000
+Time: 6321.415 ms (00:06.321)
+
+test=# SELECT pg_size_pretty(pg_relation_size('test_tbl'));
+pg_size_pretty | 3457 MB
+
+Time: 0.589 ms
+test=#
+
+</code></pre>
+
+<p>好，現在資料庫長到3457MB了</p>
+
+<p>先來執行一些初步的取得基本數據</p>
+
+<pre><code>test=# explain (analyze,buffers) select count(*) from test_tbl;
+                                   QUERY PLAN
+------------------------------------------------------------------------------------------------------------------------
+ Finalize Aggregate  (cost=755978.52..755978.53 rows=1 width=8) (actual time=3331.917..3331.918 rows=1 loops=1)
+   Buffers: shared hit=160 read=442318
+   -&gt;  Gather  (cost=755978.10..755978.51 rows=4 width=8) (actual time=3331.876..3333.674 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=160 read=442318
+         -&gt;  Partial Aggregate  (cost=754978.10..754978.11 rows=1 width=8) (actual time=3329.279..3329.280 rows=1 loops=5)
+               Buffers: shared hit=160 read=442318
+               -&gt;  Parallel Seq Scan on test_tbl  (cost=0.00..692478.08 rows=25000008 width=0) (actual time=0.029..1924.601 rows=20000000 loops=5)
+                     Buffers: shared hit=160 read=442318
+ Planning Time: 0.040 ms
+ Execution Time: 3333.729 ms
+(12 rows)
+
+(END)
+
+</code></pre>
+
+<p>可以看到打中buffer 的部份其實很少，只有 160 ，大部分都是讀進去buffer (442318)</p>
+
+<p>來看看 buffer 的使用狀況</p>
+
+<pre><code>test=# CREATE EXTENSION pg_buffercache;
+CREATE EXTENSION
+test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+test-#         round(100.0 * count(*) / ( 
+test(#            select setting from pg_settings 
+test(#            where name='shared_buffers')::integer,1)
+test-#         as buffer_percent, 
+test-#         round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+test-# from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+test-# join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+test-# group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 18 MB      |            0.3 |                 0.5
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 64 kB      |            0.0 |                13.3
+ pg_amop      | 48 kB      |            0.0 |                54.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 148.719 ms
+test=# 
+</code></pre>
+
+<p>可以看到這個 test_tbl 只有0.5% 被撈到shared_buffers 裡面</p>
+
+<p>接下來就把這個table全部推到shared_buffers 裡面去</p>
+
+<pre><code>test=# select pg_prewarm('test_tbl','buffer');
+ pg_prewarm 
+------------
+     442478
+(1 row)
+
+Time: 1938.043 ms (00:01.938)
+test=#
+</code></pre>
+
+<p>然後再來看一次shared_buffers的使用狀況</p>
+
+<pre><code>test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+        round(100.0 * count(*) / ( 
+           select setting from pg_settings 
+           where name='shared_buffers')::integer,1)
+        as buffer_percent, 
+        round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 3457 MB    |           56.3 |               100.0
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 64 kB      |            0.0 |                13.3
+ pg_amop      | 48 kB      |            0.0 |                54.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 2778.354 ms (00:02.778)
+test=# 
+</code></pre>
+
+<p>OK ，可以看到 test_tbl 已經通通被載入 shared_buffers 中</p>
+
+<p><strong>buffered 表示表格被載入shared_buffers的大小</strong></p>
+
+<p><strong>buffer_percent 表示這個表格佔用多少shared_buffers 的比例</strong></p>
+
+<p><strong>percent_of_relation 表示這個表格有多少比例被載入 shared_buffers</strong></p>
+
+<p>再來跑一次explain看看狀況</p>
+
+<pre><code>test=# explain (analyze,buffers) select count(*) from test_tbl;
+Time: 3551.785 ms (00:03.552)
+ Finalize Aggregate  (cost=755978.52..755978.53 rows=1 width=8) (actual time=3427.286..3427.287 rows=1 loops=1)
+   Buffers: shared hit=442478
+   -&gt;  Gather  (cost=755978.10..755978.51 rows=4 width=8) (actual time=3427.215..3551.326 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=442478
+         -&gt;  Partial Aggregate  (cost=754978.10..754978.11 rows=1 width=8) (actual time=3423.659..3423.659 rows=1 loops=5)
+               Buffers: shared hit=442478
+               -&gt;  Parallel Seq Scan on test_tbl  (cost=0.00..692478.08 rows=25000008 width=0) (actual time=0.017..1976.744 rows=20000000 loops=5)
+                     Buffers: shared hit=442478
+ Planning Time: 0.039 ms
+ Execution Time: 3551.365 ms
+(12 rows)
+
+</code></pre>
+
+<p>這邊就可以看到都是從buffer 讀出來所以 hit=442478</p>
+
+<p>看樣子表格還是太小，所以沒有完全發揮？那再來把表格加大！</p>
+
+<p>先重開一次 postgresql 清除buffer</p>
+
+<p>然後重新建立表格</p>
+
+<pre><code>test=# drop table test_tbl;
+DROP TABLE
+Time: 297.493 ms
+test=# CREATE TABLE test_tbl AS
+test-# SELECT floor(random() * (993343) + 1)::int FROM generate_series(1, 300000000) AS id;
+SELECT 300000000
+Time: 290660.607 ms (04:50.661)
+test=# 
+</code></pre>
+
+<p>一樣，看看用了多少容量</p>
+
+<pre><code>test=# SELECT pg_size_pretty(pg_relation_size('test_tbl'));
+ pg_size_pretty 
+----------------
+ 10 GB
+(1 row)
+
+Time: 0.474 ms
+test=# 
+</code></pre>
+
+<p>哇哈哈，用了10G ，這次還不撐爆你！</p>
+
+<p>跑explain 看看狀況</p>
+
+<pre><code>test=# explain (analyze,buffers) select count(*) from test_tbl;
+Time: 22909.065 ms (00:22.909)
+
+                                              QUERY PLAN
+---------------------------------------------------------------------------------------------------------------------------
+ Finalize Aggregate  (cost=2265934.72..2265934.73 rows=1 width=8) (actual time=22906.045..22906.045 rows=1 loops=1)
+   Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+   -&gt;  Gather  (cost=2265934.30..2265934.71 rows=4 width=8) (actual time=22905.997..22908.522 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+         -&gt;  Partial Aggregate  (cost=2264934.30..2264934.31 rows=1 width=8) (actual time=22903.473..22903.474 rows=1 loops=5)
+               Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+               -&gt;  Parallel Seq Scan on test_tbl  (cost=0.00..2077434.24 rows=75000024 width=0) (actual time=0.040..18374.277 rows=60000000 loops=5)
+                     Buffers: shared hit=2080 read=1325354 dirtied=1295425 written=1295265
+ Planning Time: 0.094 ms
+ Execution Time: 22908.571 ms
+(12 rows)
+
+</code></pre>
+
+<p>看一下現在 shared_buffers 使用狀況</p>
+
+<p>可以看到這個 test_tbl 幾乎沒被放入 shared_buffers 中</p>
+
+<pre><code>test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+        round(100.0 * count(*) / ( 
+           select setting from pg_settings 
+           where name='shared_buffers')::integer,1)
+        as buffer_percent, 
+        round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 18 MB      |            0.3 |                 0.2
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 64 kB      |            0.0 |                13.3
+ pg_amop      | 48 kB      |            0.0 |                54.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 163.936 ms
+test=# 
+</code></pre>
+
+<p>強制把test_tbl 全部塞進 shared_buffers</p>
+
+<pre><code>test=# select pg_prewarm('test_tbl','buffer');
+ pg_prewarm 
+------------
+    1327434
+(1 row)
+
+Time: 7472.805 ms (00:07.473)
+test=# 
+</code></pre>
+
+<p>確認一下test_tbl 有沒有被整個塞進去</p>
+
+<pre><code>test=# select c.relname,pg_size_pretty(count(*) * 8192) as buffered, 
+        round(100.0 * count(*) / ( 
+           select setting from pg_settings 
+           where name='shared_buffers')::integer,1)
+        as buffer_percent, 
+        round(100.0*count(*)*8192 / pg_table_size(c.oid),1) as percent_of_relation
+from pg_class c inner join pg_buffercache b on b.relfilenode = c.relfilenode inner 
+join pg_database d on ( b.reldatabase =d.oid and d.datname =current_database()) 
+group by c.oid,c.relname order by 3 desc limit 10;
+   relname    |  buffered  | buffer_percent | percent_of_relation 
+--------------+------------+----------------+---------------------
+ test_tbl     | 6142 MB    |          100.0 |                59.2
+ pg_am        | 8192 bytes |            0.0 |                20.0
+ pg_index     | 24 kB      |            0.0 |                37.5
+ pg_amproc    | 32 kB      |            0.0 |                50.0
+ pg_cast      | 16 kB      |            0.0 |                33.3
+ pg_depend    | 24 kB      |            0.0 |                 5.0
+ pg_amop      | 40 kB      |            0.0 |                45.5
+ pg_namespace | 8192 bytes |            0.0 |                20.0
+ pg_opclass   | 16 kB      |            0.0 |                28.6
+ pg_aggregate | 8192 bytes |            0.0 |                16.7
+(10 rows)
+
+Time: 4985.366 ms (00:04.985)
+test=#
+</code></pre>
+
+<p>GOOD ！ let&rsquo;s do explain again !</p>
+
+<pre><code>test=# explain (analyze,buffers) select count(*) from test_tbl;
+Time: 11451.188 ms (00:11.451)
+                             QUERY PLAN
+--------------------------------------------------------------------------------------------------------------------
+ Finalize Aggregate  (cost=2265934.72..2265934.73 rows=1 width=8) (actual time=11231.664..11231.664 rows=1 loops=1)
+   Buffers: shared hit=785963 read=541471
+   -&gt;  Gather  (cost=2265934.30..2265934.71 rows=4 width=8) (actual time=11231.606..11450.719 rows=5 loops=1)
+         Workers Planned: 4
+         Workers Launched: 4
+         Buffers: shared hit=785963 read=541471
+         -&gt;  Partial Aggregate  (cost=2264934.30..2264934.31 rows=1 width=8) (actual time=11228.829..11228.830 rows=1 loops=5)
+               Buffers: shared hit=785963 read=541471
+               -&gt;  Parallel Seq Scan on test_tbl  (cost=0.00..2077434.24 rows=75000024 width=0) (actual time=0.037..6414.711 rows=60000000 loops=5)
+                     Buffers: shared hit=785963 read=541471
+ Planning Time: 0.039 ms
+ Execution Time: 11450.781 ms
+(12 rows)
+</code></pre>
+
+<p>確認一下，果然大部分都打到cache 了，但是因為shared_buffers 不夠大，所以還會從磁碟讀取一部分</p>
+
+<p>而且時間也比之前還沒塞進shared_buffers 的時候要快了不少</p>
+
+<p>22908.571 &ndash;&gt; 11450.781 ms</p>
+
+<hr />
+
+<p>從這次的測試看來，我想如果有足夠大的記憶體，能夠把資料表都塞入shared_buffers 中</p>
+
+<p>應該可以帶來不錯的效能增幅！</p>
+            </article>
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diff --git a/public/post/transfer-cent62-using-rsync/index.html b/public/post/transfer-cent62-using-rsync/index.html
index bbaa8bb7..8ce8c2c6 100644
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diff --git a/public/post/transfer-file-content-using-xclip-in-terminal/index.html b/public/post/transfer-file-content-using-xclip-in-terminal/index.html
index 40e0c058..64f6684e 100644
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diff --git a/public/post/ubuntu-1804-install-root-on-raid/index.html b/public/post/ubuntu-1804-install-root-on-raid/index.html
index 35eb260f..c5a4b19a 100644
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diff --git a/public/post/ubuntu-dconf-proxy-settings/index.html b/public/post/ubuntu-dconf-proxy-settings/index.html
index c830c052..0c9d6fba 100644
--- a/public/post/ubuntu-dconf-proxy-settings/index.html
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+<link href="https://h.cowbay.org/css/style.css?v=1576828465" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828465" rel="stylesheet" type='text/css' media='all'>
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index bb602d5a..752b59de 100644
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-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
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diff --git a/public/sitemap.xml b/public/sitemap.xml
index 68fd2bd8..4adcdfe7 100644
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-    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
+    <loc>https://h.cowbay.org/post/test-pg_prewarm/</loc>
+    <lastmod>2019-12-20T14:31:42+08:00</lastmod>
   </url>
   
   <url>
-    <loc>https://h.cowbay.org/tags/ansible/</loc>
-    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
+    <loc>https://h.cowbay.org/categories/</loc>
+    <lastmod>2019-12-20T14:31:42+08:00</lastmod>
   </url>
   
   <url>
-    <loc>https://h.cowbay.org/categories/</loc>
-    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
+    <loc>https://h.cowbay.org/</loc>
+    <lastmod>2019-12-20T14:31:42+08:00</lastmod>
   </url>
   
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-    <loc>https://h.cowbay.org/</loc>
-    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
+    <loc>https://h.cowbay.org/tags/postgresql/</loc>
+    <lastmod>2019-12-20T14:31:42+08:00</lastmod>
   </url>
   
   <url>
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-    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
+    <lastmod>2019-12-20T14:31:42+08:00</lastmod>
   </url>
   
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-    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
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   </url>
   
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     <loc>https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/</loc>
+    <lastmod>2019-12-20T14:31:42+08:00</lastmod>
+  </url>
+  
+  <url>
+    <loc>https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/</loc>
+    <lastmod>2019-12-18T14:44:27+08:00</lastmod>
+  </url>
+  
+  <url>
+    <loc>https://h.cowbay.org/tags/ansible/</loc>
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-    <loc>https://h.cowbay.org/categories/%E7%BE%A4%E6%9A%89/</loc>
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diff --git a/public/tags/bsd/index.html b/public/tags/bsd/index.html
index 184082ee..bcf1c583 100644
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-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
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index 35bfa881..91d941a9 100644
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diff --git a/public/tags/nvidia/index.html b/public/tags/nvidia/index.html
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-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
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+        "datePublished": "2019-12-20 14:31:42 \x2b0800 CST",
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@@ -290,6 +290,62 @@ if (!doNotTrack) {
 			
 
 				
+				<a class="featured-image-link" href="https://h.cowbay.org/post/test-pg_prewarm/"><div class='featured-image lazy lazy-bg-image'   data-background="https://h.cowbay.org/images/post-default-9.jpg"></div></a>
+
+				
+
+				<div class="excerpt-container">
+					<div class="excerpt-meta">
+						<span class="date">20 December 2019</span>	<span> / </span>
+
+						
+
+						<span class="author">
+							
+							<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
+							
+						</span>
+						
+
+						 
+							<span> / </span>
+						<span class="category">
+							<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
+						</span>
+						
+					</div>
+							<div class='excerpt-header'>
+								<h2 class='excerpt-title'>
+									<a href="https://h.cowbay.org/post/test-pg_prewarm/ "> [筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11 </a>
+								</h2>
+							</div>
+							<div class='excerpt-content'>
+								<article>
+									<p>老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面</p>
+
+<p>但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)</p>
+
+<p>在找資料的時候，發現了這個postgresql 的 pg_prewarm extension</p>
+
+<p>好像有點意思？就來測試看看吧！</p>
+
+<p>只是目前還不知道該怎麼解讀測試的數據就是了&hellip;</p>
+
+<p>幹！林北真的不是 DBA 啦 =.=</p>
+
+									<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/test-pg_prewarm/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
+								</article>
+							</div>
+						</div>
+					</div>
+					
+	
+	
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+			
+			
+
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diff --git a/public/tags/postgresql/index.xml b/public/tags/postgresql/index.xml
index 4d796f46..2a4d1eef 100644
--- a/public/tags/postgresql/index.xml
+++ b/public/tags/postgresql/index.xml
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     <generator>Hugo -- gohugo.io</generator>
     <language>en-us</language>
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+    <item>
+      <title>[筆記] 測試 postgresql 的pg_prewarm 對效能的影響 / test pg_prewarm in postgresql 11</title>
+      <link>https://h.cowbay.org/post/test-pg_prewarm/</link>
+      <pubDate>Fri, 20 Dec 2019 14:31:42 +0800</pubDate>
+      
+      <guid>https://h.cowbay.org/post/test-pg_prewarm/</guid>
+      <description>&lt;p&gt;老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面&lt;/p&gt;
+
+&lt;p&gt;但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)&lt;/p&gt;
+
+&lt;p&gt;在找資料的時候，發現了這個postgresql 的 pg_prewarm extension&lt;/p&gt;
+
+&lt;p&gt;好像有點意思？就來測試看看吧！&lt;/p&gt;
+
+&lt;p&gt;只是目前還不知道該怎麼解讀測試的數據就是了&amp;hellip;&lt;/p&gt;
+
+&lt;p&gt;幹！林北真的不是 DBA 啦 =.=&lt;/p&gt;</description>
+    </item>
+    
     <item>
       <title>[筆記] 在ubuntu 18.04安裝psql 11 以及 pg_auto_failover / install psql 11 and pg_auto_failover in ubuntu 18.04</title>
       <link>https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/</link>
diff --git a/public/tags/proxmox/index.html b/public/tags/proxmox/index.html
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+<link href="https://h.cowbay.org/css/style.css?v=1576828466" rel="stylesheet" id="theme-stylesheet" type='text/css' media='all'>
 
-<link href="https://h.cowbay.org/css/custom.css?v=1576652202" rel="stylesheet" type='text/css' media='all'>
+<link href="https://h.cowbay.org/css/custom.css?v=1576828466" rel="stylesheet" type='text/css' media='all'>
 <link rel="shortcut icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 <link rel="icon" href="https://h.cowbay.org/img/favicon.ico" type="image/x-icon">
 
@@ -478,6 +478,6 @@ if (!doNotTrack) {
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     <script src="https://h.cowbay.org/js/jquery.min.js"></script>
 <script src="https://h.cowbay.org/js/jquerymigrate.js"></script>
-<script src="https://h.cowbay.org/js/production.min.js?v=1576652202"></script>
+<script src="https://h.cowbay.org/js/production.min.js?v=1576828466"></script>
 
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