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add backup restore postgresql using zfs snapshot

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Eric Chang 6 years ago
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---
title: "[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot"
date: 2019-09-06T10:42:11+08:00
noSummary: false
featuredImage: "https://h.cowbay.org/images/post-default-5.jpg"
categories: ['筆記']
tags: ['postgresql','zfs','backup','restore']
author: "Eric Chang"
keywords:
- postgresql
- zfs
- backup
- restore
---
前面測試了用pgbarman / pgbackrest 來備份 postgresql
這次改從system file level 來下手
採用zfs 的快照來備份、還原postgresql 資料庫
<!--more-->
### 建立測試資料庫、TABLE、snapshot
#### 資料庫現況
只有系統預設的DB，沒有其他多的東西
```
postgres@hqdc034:~$ psql -c '\l'
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+-------------+-------------+-----------------------
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
(3 rows)
postgres@hqdc034:~$ du -sh /zp/database/10/main/
232M /zp/database/10/main/
```
#### 建立第一次的快照
```
2019-09-06 09:03:46 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
no datasets available
2019-09-06 09:03:53 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@init_db_no_demo
2019-09-06 09:04:09 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 0 - 231M -
2019-09-06 09:04:15 [changch@hqdc034 ~]$
```
#### 建立、倒回測試資料庫 demo
```
postgres@hqdc034:~$ createdb demo
postgres@hqdc034:~$ psql demo < /home/changch/Downloads/demo.sql
SET
SET
略...
```
再檢查一次資料庫的狀況，看到 demo DB出現了，資料庫目錄也變大了
```
postgres@hqdc034:~$ psql -c '\l'
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+-------------+-------------+-----------------------
demo | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
(4 rows)
postgres@hqdc034:~$ du -sh /zp/database/10/main/
2.1G /zp/database/10/main/
postgres@hqdc034:~$
```
#### 建立第二次快照
這次的快照，將包含剛剛倒回的 demo DB，但是不包含等下才要建立的測試 table
```
2019-09-06 09:16:01 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 0 - 2.08G -
2019-09-06 09:16:04 [changch@hqdc034 ~]$
```
#### 建立測試 table
```
postgres@hqdc034:~$ psql -c 'create table test ( a int, b varchar(50) );'
CREATE TABLE
postgres@hqdc034:~$
```
#### 建立第三次快照
這次快照，只有建立 test table ，但是裡面沒有資料
```
2019-09-06 09:18:34 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 0 - 2.08G -
2019-09-06 09:18:36 [changch@hqdc034 ~]$
```
#### 在test table 插入100萬筆資料
```
postgres@hqdc034:~$ psql -c 'with aa as ( select * from generate_series (1,1000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 1000000
postgres@hqdc034:~$ psql -c 'select count(*) from test;'
count
---------
1000000
(1 row)
postgres@hqdc034:~$
```
#### 建立第四次快照
test table 內有 1000000 筆資料
```
2019-09-06 09:18:36 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_1M_rows
2019-09-06 09:21:08 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 0 - 2.15G -
2019-09-06 09:21:09 [changch@hqdc034 ~]$
```
#### 再次插入 100萬筆資料
```
postgres@hqdc034:~$ time psql -c 'with aa as ( select * from generate_series (1,1000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 1000000
real 0m4.276s
user 0m0.020s
sys 0m0.012s
postgres@hqdc034:~$ psql -c 'select count(*) from test;'
count
---------
2000000
(1 row)
postgres@hqdc034:~$
```
#### 建立第五次快照
現在 test table 有 200萬筆資料了
```
2019-09-06 09:21:09 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_2M_rows
2019-09-06 09:22:29 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 0 - 2.23G -
2019-09-06 09:22:30 [changch@hqdc034 ~]$
```
#### 玩大點，直接湊滿1000萬筆資料好了
```
postgres@hqdc034:~$ time psql -c 'with aa as ( select * from generate_series (1,8000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 8000000
real 0m32.172s
user 0m0.024s
sys 0m0.008s
postgres@hqdc034:~$ psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
postgres@hqdc034:~$
```
#### 建立第六次快照
10M rows in test table
```
2019-09-06 09:22:30 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_10M_rows
2019-09-06 09:25:18 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 530K - 2.23G -
zp/database@demo_db_test_table_with_10M_rows 163K - 2.97G -
2019-09-06 09:25:21 [changch@hqdc034 ~]$
```
到1000萬筆資料為止，現在資料庫大小是這樣
```
postgres@hqdc034:~$ du -sh /zp/database/10/main/
3.0G /zp/database/10/main/
postgres@hqdc034:~$
```
***
### 還原測試
最後一次做快照的時候，demo DB 裡面有一千萬筆資料，現在來砍掉500萬筆
```
postgres@hqdc034:~$ time psql -c 'delete from test where a > 5000000;'
DELETE 3000000
real 0m7.844s
user 0m0.024s
sys 0m0.004s
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
---------
7000000
(1 row)
real 0m0.268s
user 0m0.024s
sys 0m0.004s
postgres@hqdc034:~$
```
咦，怪怪的，為什麼只有砍掉300萬筆？
好，這邊先不管，等等正好來驗證restore的狀況
假設剛剛這個刪除是錯誤的動作，我要回到1000萬資料的狀態，就可以用zfs rollback 來達成
#### 第一次還原
目標是還原到包含1000萬筆資料的狀態(現在是700萬筆)
```
2019-09-06 09:25:21 [changch@hqdc034 ~]$ sudo service postgresql stop
* Stopping PostgreSQL 10 database server [ OK ]
2019-09-06 10:14:12 [changch@hqdc034 ~]$ sudo zfs rollback -r zp/database@demo_db_test_table_with_10M_rows
2019-09-06 10:14:28 [changch@hqdc034 ~]$ sudo service postgresql start
* Starting PostgreSQL 10 database server [ OK ]
2019-09-06 10:14:57 [changch@hqdc034 ~]$
```
檢查一下
```
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
real 0m5.019s
user 0m0.040s
sys 0m0.008s
postgres@hqdc034:~$
```
沒錯，又回到1000萬筆資料的狀態了
要注意的是，如果回到更之前的狀態，在該狀態之後的快照將會被清除，除非你先做clone
比如我現在要回到 200萬筆的狀態，那1000萬筆資料的快照就會被刪除
```
2019-09-06 10:17:32 [changch@hqdc034 ~]$ sudo service postgresql stop
* Stopping PostgreSQL 10 database server [ OK ]
2019-09-06 10:18:50 [changch@hqdc034 ~]$ sudo zfs rollback -r zp/database@demo_db_test_table_with_2M_rows
2019-09-06 10:18:57 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 0 - 2.23G -
2019-09-06 10:19:04 [changch@hqdc034 ~]$ sudo service postgresql start
* Starting PostgreSQL 10 database server [ OK ]
2019-09-06 10:19:17 [changch@hqdc034 ~]$
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
---------
2000000
(1 row)
real 0m0.175s
user 0m0.024s
sys 0m0.008s
postgres@hqdc034:~$
```
啊，我剛剛應該先clone的....
沒關係，我們再做一次，新增800萬筆資料，湊齊1000萬筆，然後快照
```
postgres@hqdc034:~$ time psql -c 'with aa as ( select * from generate_series (1,8000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 8000000
real 0m35.662s
user 0m0.048s
sys 0m0.004s
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
real 0m5.259s
user 0m0.024s
sys 0m0.008s
postgres@hqdc034:~$
```
做快照
```
2019-09-06 10:19:17 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_10M_rows
2019-09-06 10:22:59 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 56.4M - 2.23G -
zp/database@demo_db_test_table_with_10M_rows 0 - 1.81G -
2019-09-06 10:23:02 [changch@hqdc034 ~]$
```
接著來測試看看 clone snapshot，這是基本的說明
```
Clones can only be created from a snapshot and a snapshot can not
be deleted until you delete the clone that is based on this snapshot.
To create a clone, use the zfs clone command.
```
clone 會做出一份跟clone來源一模一樣的資料，在快照模式下，資料是唯讀的，clone出來後，就可以做異動。但是不能刪除clone來源的快照，會提示錯誤。
```
2019-09-06 10:28:31 [changch@hqdc034 ~]$ sudo zfs clone zp/database@demo_db_test_table_with_10M_rows zp/database/clone_with_10M_rows
2019-09-06 10:29:21 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.08G 231G 22K /zp
zp/database 3.08G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 0 231G 1.81G /zp/database/clone_with_10M_rows
2019-09-06 10:29:26 [changch@hqdc034 ~]$
```
可以看到做了clone之後，多了一個 zfs dataset
試試看把資料庫路徑直接改到這個新做的dataset 看看能不能啟動資料庫
修改 /etc/postgresql/10/main/postgresql.conf，然後重起postgresql
```
#data_directory = '/var/lib/postgresql/10/main' # use data in another directory
#data_directory = '/zp/database/10/main'
data_directory = '/zp/database/clone_with_10M_rows/10/main'
```
**啟動有比較久一點** 而且好像沒成功啟動
```
2019-09-06 10:32:27 [changch@hqdc034 ~]$ sudo service postgresql restart
* Restarting PostgreSQL 10 database server [ OK ]
2019-09-06 10:33:37 [changch@hqdc034 ~]$
2019-09-06 10:33:37 [changch@hqdc034 ~]$ sudo netstat -antlp |grep 5432
```
而且在 syslog & postgresql log 中看不到什麼異常，怪了！
而且再啟動一次就好了？
再來測試一次看看
```
2019-09-06 10:37:22 [changch@hqdc034 ~]$ sudo service postgresql stop
* Stopping PostgreSQL 10 database server [ OK ]
2019-09-06 10:38:03 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.24G 231G 22K /zp
zp/database 3.24G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 165M 231G 1.88G /zp/database/clone_with_10M_rows
2019-09-06 10:38:13 [changch@hqdc034 ~]$ sudo zfs destroy zp/database/clone_with_10M_rows
2019-09-06 10:38:21 [changch@hqdc034 ~]$ sudo zfs clone zp/database@demo_db_test_table_with_10M_rows zp/database/clone_with_10M_rows
2019-09-06 10:38:32 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.08G 231G 22K /zp
zp/database 3.08G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 0 231G 1.81G /zp/database/clone_with_10M_rows
2019-09-06 10:38:35 [changch@hqdc034 ~]$ sudo service postgresql start^C
2019-09-06 10:38:44 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.08G 231G 22K /zp
zp/database 3.08G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 0 231G 1.81G /zp/database/clone_with_10M_rows
2019-09-06 10:38:45 [changch@hqdc034 ~]$ sudo service postgresql start
* Starting PostgreSQL 10 database server [ OK ]
2019-09-06 10:39:04 [changch@hqdc034 ~]$ netstat -antlp |grep 5432
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN -
tcp6 0 0 :::5432 :::* LISTEN -
2019-09-06 10:39:13 [changch@hqdc034 ~]$
```
這次就沒問題？看來是我第一次下指令的時候，不該用sudo netstat -antlp 去檢查？
anyway ，回到psql 來看看內容
```
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
real 0m4.716s
user 0m0.028s
sys 0m0.004s
postgres@hqdc034:~$
```
Good ，clone 出來的果然是1000萬筆資料時的狀態
***
這次測試就先到此為止，後面再來測試zfs的 replication and send/recv

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public/404.html
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -140,10 +144,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -154,7 +154,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

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public/author/eric-chang/index.html
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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<img src="/images/post-default-5.jpg" alt="">
</a>
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<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-09-06</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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></p>
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/" class="more"></a>
</div>
<div class="footer">
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<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/postgresql">postgresql</a>
<a href="/tags/zfs">zfs</a>
<a href="/tags/backup">backup</a>
<a href="/tags/restore">restore</a>
</div>
</div>
</div>
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<a class="bubble" href="/post/backup-restore-postgresql-with-pgbackrest/">
@ -834,83 +917,6 @@
</div>
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<a class="bubble" href="/post/ansible-run-task-depends-on-ipaddr/">
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<img src="/images/post-default-7.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-07-23</span>
<span class="categories">
<a href="/categories/ansible">ansible</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</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>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</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>
<a href="/post/ansible-run-task-depends-on-ipaddr/" class="more"></a>
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</article>
@ -941,6 +947,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -965,10 +975,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -979,7 +985,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
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<link>https://h.cowbay.org/author/eric-chang/</link>
<description>Recent content in Eric Chang on MCの飄狂山莊㊣</description>
<generator>Hugo -- gohugo.io</generator>
<lastBuildDate>Thu, 05 Sep 2019 11:42:28 +0800</lastBuildDate>
<lastBuildDate>Fri, 06 Sep 2019 10:42:11 +0800</lastBuildDate>
<atom:link href="https://h.cowbay.org/author/eric-chang/index.xml" rel="self" type="application/rss+xml" />
<item>
<title>[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</title>
<link>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</guid>
<description>&lt;p&gt;前面測試了用pgbarman / pgbackrest 來備份 postgresql&lt;/p&gt;
&lt;p&gt;這次改從system file level 來下手&lt;/p&gt;
&lt;p&gt;採用zfs 的快照來備份、還原postgresql 資料庫&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</description>
</item>
<item>
<title>[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</title>
<link>https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/</link>

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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-run-task-depends-on-ipaddr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-run-task-depends-on-ipaddr/">
<img src="/images/post-default-7.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-07-23</span>
<span class="categories">
<a href="/categories/ansible">ansible</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</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>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</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>
<a href="/post/ansible-run-task-depends-on-ipaddr/" class="more"></a>
</div>
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<i class="fa fa-tags"></i>
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</div>
</div>
</div>
</article>
</div>
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</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/command_to_test_main_ssl/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/command_to_test_main_ssl/">
<img src="/images/post-default-10.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-03-20</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
<a href="/post/command_to_test_main_ssl/" class="more"></a>
</div>
<div class="footer no-tags">
</div>
</article>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -914,10 +935,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -928,7 +945,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/command_to_test_main_ssl/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/command_to_test_main_ssl/">
<img src="/images/post-default-10.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-03-20</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
<a href="/post/command_to_test_main_ssl/" class="more"></a>
</div>
<div class="footer no-tags">
</div>
</article>
</div>
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<a class="bubble" href="/post/ansible-selectattr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-selectattr/">
<img src="/images/post-default-1.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
<div class="meta">
<span class="date moment">2018-11-27</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>這幾天在玩ansible 時，碰到一個問題</p>
<p>假如我有個yaml檔作為資料來源，檔名是 abc.yml</p>
<p>大概長這樣</p>
<pre><code> &quot;teams&quot;: [
{
&quot;chinese_name&quot;: &quot;TEAM1&quot;,
&quot;description&quot;: &quot;TEAM1&quot;,
&quot;gid&quot;: 10125,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;aa&quot;,
&quot;users&quot;: [
&quot;chen&quot;,
&quot;chou&quot;,
&quot;huani&quot;,
&quot;yey&quot;,
&quot;wa&quot;
]
},
{
&quot;chinese_name&quot;: &quot;TEAM2&quot;,
&quot;description&quot;: &quot;TEAM2&quot;,
&quot;gid&quot;: 10126,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;bb&quot;,
&quot;users&quot;: [
&quot;chhiao&quot;,
&quot;chgc&quot;,
&quot;chy&quot;,
&quot;hsi&quot;,
&quot;li&quot;,
&quot;li&quot;,
&quot;chgchi&quot;
]
}
]
</code></pre>
<p></p>
<a href="/post/ansible-selectattr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/ansible">ansible</a>
<a href="/tags/linux">linux</a>
</div>
</div>
</div>
</article>
@ -968,6 +910,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -992,10 +938,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -1006,7 +948,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-selectattr/">
<img src="/images/post-default-1.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
<div class="meta">
<span class="date moment">2018-11-27</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>這幾天在玩ansible 時，碰到一個問題</p>
<p>假如我有個yaml檔作為資料來源，檔名是 abc.yml</p>
<p>大概長這樣</p>
<pre><code> &quot;teams&quot;: [
{
&quot;chinese_name&quot;: &quot;TEAM1&quot;,
&quot;description&quot;: &quot;TEAM1&quot;,
&quot;gid&quot;: 10125,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;aa&quot;,
&quot;users&quot;: [
&quot;chen&quot;,
&quot;chou&quot;,
&quot;huani&quot;,
&quot;yey&quot;,
&quot;wa&quot;
]
},
{
&quot;chinese_name&quot;: &quot;TEAM2&quot;,
&quot;description&quot;: &quot;TEAM2&quot;,
&quot;gid&quot;: 10126,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;bb&quot;,
&quot;users&quot;: [
&quot;chhiao&quot;,
&quot;chgc&quot;,
&quot;chy&quot;,
&quot;hsi&quot;,
&quot;li&quot;,
&quot;li&quot;,
&quot;chgchi&quot;
]
}
]
</code></pre>
<p></p>
<a href="/post/ansible-selectattr/" class="more"></a>
</div>
<div class="footer">
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<a href="/tags/linux">linux</a>
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</div>
</div>
</article>
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<a class="bubble" href="/post/change-preferred-language-in-firefox/">
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -718,10 +840,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -732,7 +850,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
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<hr>
<ul id="all-categories">
<li><a href="/author/eric-chang">Eric chang (37)</a></li>
<li><a href="/author/eric-chang">Eric chang (38)</a></li>
</ul>
</div>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -145,10 +149,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -159,7 +159,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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</li>
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<item>
<title>Eric Chang</title>
<link>https://h.cowbay.org/author/eric-chang/</link>
<pubDate>Thu, 05 Sep 2019 11:42:28 +0800</pubDate>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/author/eric-chang/</guid>
<description></description>

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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -374,10 +378,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -388,7 +388,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<li><a href="/categories/%E7%A2%8E%E5%BF%B5">碎念 (1)</a></li>
<li><a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a></li>
<li><a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a></li>
<li><a href="/categories/%E7%BE%A4%E6%9A%89">群暉 (1)</a></li>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -157,10 +161,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
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@ -171,7 +171,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<item>
<title>筆記</title>
<link>https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/</link>
<pubDate>Thu, 05 Sep 2019 11:42:28 +0800</pubDate>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/</guid>
<description></description>

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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -215,10 +219,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -231,7 +231,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
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<ul>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<img src="/images/post-default-5.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-09-06</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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></p>
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/postgresql">postgresql</a>
<a href="/tags/zfs">zfs</a>
<a href="/tags/backup">backup</a>
<a href="/tags/restore">restore</a>
</div>
</div>
</div>
</article>
</div>
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<a class="bubble" href="/post/backup-restore-postgresql-with-pgbackrest/">
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</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/change-timezone-in-docker/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/change-timezone-in-docker/">
<img src="/images/post-default-3.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/change-timezone-in-docker/">[筆記] 修改 docker 容器內的時區 - Change Timezone in Docker</a></h3>
<div class="meta">
<span class="date moment">2019-05-21</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>有的用 UTC，有的用localtime，就是沒碰到用 Asia/Taipei 的&hellip;.</p>
<a href="/post/change-timezone-in-docker/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/docker">docker</a>
<a href="/tags/timezone">timezone</a>
</div>
</div>
</div>
</article>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -964,10 +976,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
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<link>https://h.cowbay.org/categories/%E7%AD%86%E8%A8%98/</link>
<description>Recent content in 筆記 on MCの飄狂山莊㊣</description>
<generator>Hugo -- gohugo.io</generator>
<lastBuildDate>Thu, 05 Sep 2019 11:42:28 +0800</lastBuildDate>
<lastBuildDate>Fri, 06 Sep 2019 10:42:11 +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] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</title>
<link>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</guid>
<description>&lt;p&gt;前面測試了用pgbarman / pgbackrest 來備份 postgresql&lt;/p&gt;
&lt;p&gt;這次改從system file level 來下手&lt;/p&gt;
&lt;p&gt;採用zfs 的快照來備份、還原postgresql 資料庫&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</description>
</item>
<item>
<title>[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</title>
<link>https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/</link>

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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/change-timezone-in-docker/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/change-timezone-in-docker/">
<img src="/images/post-default-3.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/change-timezone-in-docker/">[筆記] 修改 docker 容器內的時區 - Change Timezone in Docker</a></h3>
<div class="meta">
<span class="date moment">2019-05-21</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>有的用 UTC，有的用localtime，就是沒碰到用 Asia/Taipei 的&hellip;.</p>
<a href="/post/change-timezone-in-docker/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/docker">docker</a>
<a href="/tags/timezone">timezone</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/inx-collect-detail-hardware-info/">
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</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/10g-lab-using-proxmox-and-mellanox/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/10g-lab-using-proxmox-and-mellanox/">
<img src="/images/post-default-03.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/10g-lab-using-proxmox-and-mellanox/">[筆記] 用 proxmox &amp; Mellanox SFP 網卡土炮 10G LAB </a></h3>
<div class="meta">
<span class="date moment">2018-11-30</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>想做一個 10G 的 LAB 環境出來已經很久了。</p>
<p>只是礙於10G RJ45的卡太貴了，然後光纖的種類又太複雜</p>
<p>如果直接在淘寶購買，很怕會買錯(什麼LC/FC LC/LC 多模單模 單芯雙芯 SFP/SFP+ 又是什麼光模塊的一大堆規格)</p>
<p>所以一直沒有付諸行動。</p>
<p>硬體的工作很久沒碰了，剛好在蝦皮看到有個賣家在賣 mellanox 的X2網卡，以在台灣的價格來說，算很便宜的 (550)</p>
<p>聊了一下，跟他請教了關於線材、光纖模塊的問題，回答也都很快很到位</p>
<p>就直接下訂了兩張網卡、兩個光纖模塊、一條LC/LC 光纖線</p>
<p>就是到貨有點久，等了兩個禮拜左右，一直到昨天東西才寄到</p>
<p>今天就花了點時間測試一下</p>
<p></p>
<a href="/post/10g-lab-using-proxmox-and-mellanox/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/10g">10G</a>
<a href="/tags/%E7%AD%86%E8%A8%98">筆記</a>
<a href="/tags/mellanox">mellanox</a>
</div>
</div>
</div>
</article>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -942,10 +928,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -956,7 +938,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/10g-lab-using-proxmox-and-mellanox/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/10g-lab-using-proxmox-and-mellanox/">
<img src="/images/post-default-03.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/10g-lab-using-proxmox-and-mellanox/">[筆記] 用 proxmox &amp; Mellanox SFP 網卡土炮 10G LAB </a></h3>
<div class="meta">
<span class="date moment">2018-11-30</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>想做一個 10G 的 LAB 環境出來已經很久了。</p>
<p>只是礙於10G RJ45的卡太貴了，然後光纖的種類又太複雜</p>
<p>如果直接在淘寶購買，很怕會買錯(什麼LC/FC LC/LC 多模單模 單芯雙芯 SFP/SFP+ 又是什麼光模塊的一大堆規格)</p>
<p>所以一直沒有付諸行動。</p>
<p>硬體的工作很久沒碰了，剛好在蝦皮看到有個賣家在賣 mellanox 的X2網卡，以在台灣的價格來說，算很便宜的 (550)</p>
<p>聊了一下，跟他請教了關於線材、光纖模塊的問題，回答也都很快很到位</p>
<p>就直接下訂了兩張網卡、兩個光纖模塊、一條LC/LC 光纖線</p>
<p>就是到貨有點久，等了兩個禮拜左右，一直到昨天東西才寄到</p>
<p>今天就花了點時間測試一下</p>
<p></p>
<a href="/post/10g-lab-using-proxmox-and-mellanox/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/10g">10G</a>
<a href="/tags/%E7%AD%86%E8%A8%98">筆記</a>
<a href="/tags/mellanox">mellanox</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr-filter/">
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -845,10 +942,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -227,10 +231,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<ul>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -204,10 +208,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<ul>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -216,10 +220,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -230,7 +230,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

174
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@ -96,6 +96,91 @@
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<img src="/images/post-default-5.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-09-06</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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></p>
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/postgresql">postgresql</a>
<a href="/tags/zfs">zfs</a>
<a href="/tags/backup">backup</a>
<a href="/tags/restore">restore</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/backup-restore-postgresql-with-pgbackrest/">
@ -855,85 +940,6 @@
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-run-task-depends-on-ipaddr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-run-task-depends-on-ipaddr/">
<img src="/images/post-default-7.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-07-23</span>
<span class="categories">
<a href="/categories/ansible">ansible</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</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>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</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>
<a href="/post/ansible-run-task-depends-on-ipaddr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/ansible">ansible</a>
</div>
</div>
</div>
</article>
@ -965,6 +971,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -989,10 +999,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -1003,7 +1009,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

7
public/index.json
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@ -251,6 +251,13 @@
"type": "tag",
"url": "https://h.cowbay.org/tags/remote"
},
{
"iconClass": "fa-tag",
"objectID": "https://h.cowbay.org/tags/restore",
"title": "Restore",
"type": "tag",
"url": "https://h.cowbay.org/tags/restore"
},
{
"iconClass": "fa-tag",
"objectID": "https://h.cowbay.org/tags/ssh",

17
public/index.xml
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@ -5,11 +5,26 @@
<link>https://h.cowbay.org/</link>
<description>Recent content on MCの飄狂山莊㊣</description>
<generator>Hugo -- gohugo.io</generator>
<lastBuildDate>Thu, 05 Sep 2019 11:42:28 +0800</lastBuildDate>
<lastBuildDate>Fri, 06 Sep 2019 10:42:11 +0800</lastBuildDate>
<atom:link href="https://h.cowbay.org/index.xml" rel="self" type="application/rss+xml" />
<item>
<title>[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</title>
<link>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</guid>
<description>&lt;p&gt;前面測試了用pgbarman / pgbackrest 來備份 postgresql&lt;/p&gt;
&lt;p&gt;這次改從system file level 來下手&lt;/p&gt;
&lt;p&gt;採用zfs 的快照來備份、還原postgresql 資料庫&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</description>
</item>
<item>
<title>[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</title>
<link>https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/</link>

151
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@ -96,6 +96,85 @@
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-run-task-depends-on-ipaddr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-run-task-depends-on-ipaddr/">
<img src="/images/post-default-7.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-07-23</span>
<span class="categories">
<a href="/categories/ansible">ansible</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</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>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</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>
<a href="/post/ansible-run-task-depends-on-ipaddr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/ansible">ansible</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr-from-list-in-dictionary/">
@ -819,68 +898,6 @@
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/command_to_test_main_ssl/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/command_to_test_main_ssl/">
<img src="/images/post-default-10.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-03-20</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
<a href="/post/command_to_test_main_ssl/" class="more"></a>
</div>
<div class="footer no-tags">
</div>
</article>
@ -914,6 +931,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -938,10 +959,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -952,7 +969,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

192
public/page/3/index.html
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@ -96,6 +96,68 @@
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/command_to_test_main_ssl/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/command_to_test_main_ssl/">
<img src="/images/post-default-10.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-03-20</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
<a href="/post/command_to_test_main_ssl/" class="more"></a>
</div>
<div class="footer no-tags">
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/install-timeshift-on-ubuntu1804/">
@ -839,126 +901,6 @@
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-selectattr/">
<img src="/images/post-default-1.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
<div class="meta">
<span class="date moment">2018-11-27</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>這幾天在玩ansible 時，碰到一個問題</p>
<p>假如我有個yaml檔作為資料來源，檔名是 abc.yml</p>
<p>大概長這樣</p>
<pre><code> &quot;teams&quot;: [
{
&quot;chinese_name&quot;: &quot;TEAM1&quot;,
&quot;description&quot;: &quot;TEAM1&quot;,
&quot;gid&quot;: 10125,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;aa&quot;,
&quot;users&quot;: [
&quot;chen&quot;,
&quot;chou&quot;,
&quot;huani&quot;,
&quot;yey&quot;,
&quot;wa&quot;
]
},
{
&quot;chinese_name&quot;: &quot;TEAM2&quot;,
&quot;description&quot;: &quot;TEAM2&quot;,
&quot;gid&quot;: 10126,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;bb&quot;,
&quot;users&quot;: [
&quot;chhiao&quot;,
&quot;chgc&quot;,
&quot;chy&quot;,
&quot;hsi&quot;,
&quot;li&quot;,
&quot;li&quot;,
&quot;chgchi&quot;
]
}
]
</code></pre>
<p></p>
<a href="/post/ansible-selectattr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/ansible">ansible</a>
<a href="/tags/linux">linux</a>
</div>
</div>
</div>
</article>
@ -992,6 +934,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -1016,10 +962,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -1030,7 +972,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

130
public/page/4/index.html
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@ -96,6 +96,126 @@
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-selectattr/">
<img src="/images/post-default-1.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
<div class="meta">
<span class="date moment">2018-11-27</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>這幾天在玩ansible 時，碰到一個問題</p>
<p>假如我有個yaml檔作為資料來源，檔名是 abc.yml</p>
<p>大概長這樣</p>
<pre><code> &quot;teams&quot;: [
{
&quot;chinese_name&quot;: &quot;TEAM1&quot;,
&quot;description&quot;: &quot;TEAM1&quot;,
&quot;gid&quot;: 10125,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;aa&quot;,
&quot;users&quot;: [
&quot;chen&quot;,
&quot;chou&quot;,
&quot;huani&quot;,
&quot;yey&quot;,
&quot;wa&quot;
]
},
{
&quot;chinese_name&quot;: &quot;TEAM2&quot;,
&quot;description&quot;: &quot;TEAM2&quot;,
&quot;gid&quot;: 10126,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;bb&quot;,
&quot;users&quot;: [
&quot;chhiao&quot;,
&quot;chgc&quot;,
&quot;chy&quot;,
&quot;hsi&quot;,
&quot;li&quot;,
&quot;li&quot;,
&quot;chgchi&quot;
]
}
]
</code></pre>
<p></p>
<a href="/post/ansible-selectattr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
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<a href="/tags/linux">linux</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/change-preferred-language-in-firefox/">
@ -712,6 +832,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -736,10 +860,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -750,7 +870,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/10g-lab-using-proxmox-and-mellanox/index.html
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@ -416,6 +416,10 @@ TCP window size: 85.0 KByte (default)
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -440,10 +444,6 @@ TCP window size: 85.0 KByte (default)
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -454,7 +454,7 @@ TCP window size: 85.0 KByte (default)
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
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@ -216,6 +216,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -240,10 +244,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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@ -322,10 +326,6 @@ hwaddress: f4:4d:30:45:ef:aa', host: pc120', ipv4: 192.168.1.120', user: [wany']
<a href="/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>
</li>
<li>
<a href="/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>
</li>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
<li>
<a href="/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>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
<li>
<a href="/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>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
<li>
<a href="/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>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -480,10 +484,6 @@ postgres@hqdc034:/zp/database$
<a href="/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>
</li>
<li>
<a href="/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>
</li>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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@ -309,10 +313,6 @@ b8d74048eba1 mysql:5.7.21 &quot;docker-entrypoint.s…&qu
<a href="/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>
</li>
<li>
<a href="/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>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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@ -283,10 +287,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -346,10 +350,6 @@ Tue May 21 17:39:48 CST 2019
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -360,7 +360,7 @@ Tue May 21 17:39:48 CST 2019
<ul>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -417,10 +421,6 @@ openssl s_client -showcerts -connect mail.example.com:465
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -241,10 +245,6 @@ GRANT a TO b;
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -309,10 +313,6 @@ traceroute to term.ptt.cc (104.31.231.9), 30 hops max, 60 byte packets
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -327,10 +331,6 @@ admin@storage:~$
<a href="/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>
</li>
<li>
<a href="/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>
</li>
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<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -297,10 +301,6 @@ unused devices: &lt;none&gt;
<a href="/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>
</li>
<li>
<a href="/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>
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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<img src="/images/post-default-5.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-09-06</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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></p>
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/postgresql">postgresql</a>
<a href="/tags/zfs">zfs</a>
<a href="/tags/backup">backup</a>
<a href="/tags/restore">restore</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/backup-restore-postgresql-with-pgbackrest/">
@ -834,83 +917,6 @@
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-run-task-depends-on-ipaddr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-run-task-depends-on-ipaddr/">
<img src="/images/post-default-7.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-07-23</span>
<span class="categories">
<a href="/categories/ansible">ansible</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</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>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</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>
<a href="/post/ansible-run-task-depends-on-ipaddr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/ansible">ansible</a>
</div>
</div>
</div>
</article>
@ -941,6 +947,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -965,10 +975,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -979,7 +985,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

17
public/post/index.xml
Unescape View File

@ -5,11 +5,26 @@
<link>https://h.cowbay.org/post/</link>
<description>Recent content in Posts on MCの飄狂山莊㊣</description>
<generator>Hugo -- gohugo.io</generator>
<lastBuildDate>Thu, 05 Sep 2019 11:42:28 +0800</lastBuildDate>
<lastBuildDate>Fri, 06 Sep 2019 10:42:11 +0800</lastBuildDate>
<atom:link href="https://h.cowbay.org/post/index.xml" rel="self" type="application/rss+xml" />
<item>
<title>[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</title>
<link>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</guid>
<description>&lt;p&gt;前面測試了用pgbarman / pgbackrest 來備份 postgresql&lt;/p&gt;
&lt;p&gt;這次改從system file level 來下手&lt;/p&gt;
&lt;p&gt;採用zfs 的快照來備份、還原postgresql 資料庫&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</description>
</item>
<item>
<title>[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</title>
<link>https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/</link>

10
public/post/install-asus-10g-nic-in-proxmox/index.html
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@ -311,6 +311,10 @@ root@pve:~#
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -335,10 +339,6 @@ root@pve:~#
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -349,7 +349,7 @@ root@pve:~#
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/install-nvidia-driver-cuda-pgstrom-in-ubuntu-1804/index.html
Unescape View File

@ -432,6 +432,10 @@ Aug 20 14:23:43 hqdc032 systemd[1]: Failed to start PostgreSQL Cluster 11-main.
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -456,10 +460,6 @@ Aug 20 14:23:43 hqdc032 systemd[1]: Failed to start PostgreSQL Cluster 11-main.
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -470,7 +470,7 @@ Aug 20 14:23:43 hqdc032 systemd[1]: Failed to start PostgreSQL Cluster 11-main.
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/install-timeshift-on-ubuntu1804/index.html
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@ -775,6 +775,10 @@ sudo apt install joe-jupp
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -799,10 +803,6 @@ sudo apt install joe-jupp
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -813,7 +813,7 @@ sudo apt install joe-jupp
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/install-ubuntu1804-on-dell-6ir-raid-controller/index.html
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@ -235,6 +235,10 @@ GRUB_CMDLINE_LINUX=&quot;rootdelay=90&quot;
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -259,10 +263,6 @@ GRUB_CMDLINE_LINUX=&quot;rootdelay=90&quot;
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -273,7 +273,7 @@ GRUB_CMDLINE_LINUX=&quot;rootdelay=90&quot;
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/inx-collect-detail-hardware-info/index.html
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@ -321,6 +321,10 @@ bbs089.abc.com ansible_ssh_host=192.168.0.89 ansible_ssh_user=root
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -345,10 +349,6 @@ bbs089.abc.com ansible_ssh_host=192.168.0.89 ansible_ssh_user=root
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -359,7 +359,7 @@ bbs089.abc.com ansible_ssh_host=192.168.0.89 ansible_ssh_user=root
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/log-all-bash-commands/index.html
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@ -254,6 +254,10 @@ Apr 23 15:18:48 hqs010 minion: minion [30832]: ip addr [0]
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -278,10 +282,6 @@ Apr 23 15:18:48 hqs010 minion: minion [30832]: ip addr [0]
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -292,7 +292,7 @@ Apr 23 15:18:48 hqs010 minion: minion [30832]: ip addr [0]
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/multiple-site-to-site-vpn-using-wireguard/index.html
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@ -478,6 +478,10 @@ root@sdvpn:~#
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -502,10 +506,6 @@ root@sdvpn:~#
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -516,7 +516,7 @@ root@sdvpn:~#
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

10
public/post/nice-du-report-tool-durep/index.html
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@ -252,6 +252,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -276,10 +280,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -290,7 +290,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

147
public/post/page/2/index.html
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@ -91,6 +91,83 @@
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-run-task-depends-on-ipaddr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/ansible-run-task-depends-on-ipaddr/">
<img src="/images/post-default-7.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-07-23</span>
<span class="categories">
<a href="/categories/ansible">ansible</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>因為工作上的需要，要修改client端的 /etc/environment 檔案</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>原本的清單中，有host/user/ip 這幾個值可以拿來判斷</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>
<a href="/post/ansible-run-task-depends-on-ipaddr/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/ansible">ansible</a>
</div>
</div>
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr-from-list-in-dictionary/">
@ -798,66 +875,6 @@
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/command_to_test_main_ssl/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/command_to_test_main_ssl/">
<img src="/images/post-default-10.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-03-20</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
<a href="/post/command_to_test_main_ssl/" class="more"></a>
</div>
<div class="footer no-tags">
</div>
</article>
@ -890,6 +907,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -914,10 +935,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -928,7 +945,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

188
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@ -91,6 +91,66 @@
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/command_to_test_main_ssl/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/command_to_test_main_ssl/">
<img src="/images/post-default-10.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-03-20</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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>然後，這問題應該很久了，結果現在才在講 &hellip;.</p>
<a href="/post/command_to_test_main_ssl/" class="more"></a>
</div>
<div class="footer no-tags">
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/install-timeshift-on-ubuntu1804/">
@ -818,124 +878,6 @@
</div>
</article>
</div>
<div class="article-wrapper u-cf">
<a class="bubble" href="/post/ansible-selectattr/">
<i class="fa fa-fw fa-pencil"></i>
</a>
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<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
<div class="meta">
<span class="date moment">2018-11-27</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>這幾天在玩ansible 時，碰到一個問題</p>
<p>假如我有個yaml檔作為資料來源，檔名是 abc.yml</p>
<p>大概長這樣</p>
<pre><code> &quot;teams&quot;: [
{
&quot;chinese_name&quot;: &quot;TEAM1&quot;,
&quot;description&quot;: &quot;TEAM1&quot;,
&quot;gid&quot;: 10125,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;aa&quot;,
&quot;users&quot;: [
&quot;chen&quot;,
&quot;chou&quot;,
&quot;huani&quot;,
&quot;yey&quot;,
&quot;wa&quot;
]
},
{
&quot;chinese_name&quot;: &quot;TEAM2&quot;,
&quot;description&quot;: &quot;TEAM2&quot;,
&quot;gid&quot;: 10126,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;bb&quot;,
&quot;users&quot;: [
&quot;chhiao&quot;,
&quot;chgc&quot;,
&quot;chy&quot;,
&quot;hsi&quot;,
&quot;li&quot;,
&quot;li&quot;,
&quot;chgchi&quot;
]
}
]
</code></pre>
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@ -968,6 +910,10 @@
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -992,10 +938,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
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@ -1006,7 +948,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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@ -91,6 +91,124 @@
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<a href="/post/ansible-selectattr/">
<img src="/images/post-default-1.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
<div class="meta">
<span class="date moment">2018-11-27</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<p>這幾天在玩ansible 時，碰到一個問題</p>
<p>假如我有個yaml檔作為資料來源，檔名是 abc.yml</p>
<p>大概長這樣</p>
<pre><code> &quot;teams&quot;: [
{
&quot;chinese_name&quot;: &quot;TEAM1&quot;,
&quot;description&quot;: &quot;TEAM1&quot;,
&quot;gid&quot;: 10125,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;aa&quot;,
&quot;users&quot;: [
&quot;chen&quot;,
&quot;chou&quot;,
&quot;huani&quot;,
&quot;yey&quot;,
&quot;wa&quot;
]
},
{
&quot;chinese_name&quot;: &quot;TEAM2&quot;,
&quot;description&quot;: &quot;TEAM2&quot;,
&quot;gid&quot;: 10126,
&quot;location&quot;: [
&quot;hq&quot;
],
&quot;name&quot;: &quot;bb&quot;,
&quot;users&quot;: [
&quot;chhiao&quot;,
&quot;chgc&quot;,
&quot;chy&quot;,
&quot;hsi&quot;,
&quot;li&quot;,
&quot;li&quot;,
&quot;chgchi&quot;
]
}
]
</code></pre>
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@ -626,6 +744,10 @@
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -650,10 +772,6 @@
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -664,7 +782,7 @@
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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<li>

10
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@ -342,6 +342,10 @@ barman@barman:~$
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -366,10 +370,6 @@ barman@barman:~$
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -380,7 +380,7 @@ barman@barman:~$
<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
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10
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@ -506,6 +506,10 @@ Deleted backup 20190822T171355 (start time: Fri Aug 23 09:36:43 2019, elapsed ti
<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
@ -530,10 +534,6 @@ Deleted backup 20190822T171355 (start time: Fri Aug 23 09:36:43 2019, elapsed ti
<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
@ -544,7 +544,7 @@ Deleted backup 20190822T171355 (start time: Fri Aug 23 09:36:43 2019, elapsed ti
<ul>
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<h3><a href="/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></h3>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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<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></p>
<h3 id="建立測試資料庫-table-snapshot">建立測試資料庫、TABLE、snapshot</h3>
<h4 id="資料庫現況">資料庫現況</h4>
<p>只有系統預設的DB，沒有其他多的東西</p>
<pre><code>postgres@hqdc034:~$ psql -c '\l'
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+-------------+-------------+-----------------------
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
(3 rows)
postgres@hqdc034:~$ du -sh /zp/database/10/main/
232M /zp/database/10/main/
</code></pre>
<h4 id="建立第一次的快照">建立第一次的快照</h4>
<pre><code>2019-09-06 09:03:46 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
no datasets available
2019-09-06 09:03:53 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@init_db_no_demo
2019-09-06 09:04:09 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 0 - 231M -
2019-09-06 09:04:15 [changch@hqdc034 ~]$
</code></pre>
<h4 id="建立-倒回測試資料庫-demo">建立、倒回測試資料庫 demo</h4>
<pre><code>postgres@hqdc034:~$ createdb demo
postgres@hqdc034:~$ psql demo &lt; /home/changch/Downloads/demo.sql
SET
SET
略...
</code></pre>
<p>再檢查一次資料庫的狀況，看到 demo DB出現了，資料庫目錄也變大了</p>
<pre><code>postgres@hqdc034:~$ psql -c '\l'
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
-----------+----------+----------+-------------+-------------+-----------------------
demo | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
postgres | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 |
template0 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | UTF8 | en_US.UTF-8 | en_US.UTF-8 | =c/postgres +
| | | | | postgres=CTc/postgres
(4 rows)
postgres@hqdc034:~$ du -sh /zp/database/10/main/
2.1G /zp/database/10/main/
postgres@hqdc034:~$
</code></pre>
<h4 id="建立第二次快照">建立第二次快照</h4>
<p>這次的快照，將包含剛剛倒回的 demo DB，但是不包含等下才要建立的測試 table</p>
<pre><code>2019-09-06 09:16:01 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 0 - 2.08G -
2019-09-06 09:16:04 [changch@hqdc034 ~]$
</code></pre>
<h4 id="建立測試-table">建立測試 table</h4>
<pre><code>postgres@hqdc034:~$ psql -c 'create table test ( a int, b varchar(50) );'
CREATE TABLE
postgres@hqdc034:~$
</code></pre>
<h4 id="建立第三次快照">建立第三次快照</h4>
<p>這次快照，只有建立 test table ，但是裡面沒有資料</p>
<pre><code>2019-09-06 09:18:34 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 0 - 2.08G -
2019-09-06 09:18:36 [changch@hqdc034 ~]$
</code></pre>
<h4 id="在test-table-插入100萬筆資料">在test table 插入100萬筆資料</h4>
<pre><code>postgres@hqdc034:~$ psql -c 'with aa as ( select * from generate_series (1,1000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 1000000
postgres@hqdc034:~$ psql -c 'select count(*) from test;'
count
---------
1000000
(1 row)
postgres@hqdc034:~$
</code></pre>
<h4 id="建立第四次快照">建立第四次快照</h4>
<p>test table 內有 1000000 筆資料</p>
<pre><code>2019-09-06 09:18:36 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_1M_rows
2019-09-06 09:21:08 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 0 - 2.15G -
2019-09-06 09:21:09 [changch@hqdc034 ~]$
</code></pre>
<h4 id="再次插入-100萬筆資料">再次插入 100萬筆資料</h4>
<pre><code>postgres@hqdc034:~$ time psql -c 'with aa as ( select * from generate_series (1,1000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 1000000
real 0m4.276s
user 0m0.020s
sys 0m0.012s
postgres@hqdc034:~$ psql -c 'select count(*) from test;'
count
---------
2000000
(1 row)
postgres@hqdc034:~$
</code></pre>
<h4 id="建立第五次快照">建立第五次快照</h4>
<p>現在 test table 有 200萬筆資料了</p>
<pre><code>2019-09-06 09:21:09 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_2M_rows
2019-09-06 09:22:29 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 0 - 2.23G -
2019-09-06 09:22:30 [changch@hqdc034 ~]$
</code></pre>
<h4 id="玩大點-直接湊滿1000萬筆資料好了">玩大點，直接湊滿1000萬筆資料好了</h4>
<pre><code>postgres@hqdc034:~$ time psql -c 'with aa as ( select * from generate_series (1,8000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 8000000
real 0m32.172s
user 0m0.024s
sys 0m0.008s
postgres@hqdc034:~$ psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
postgres@hqdc034:~$
</code></pre>
<h4 id="建立第六次快照">建立第六次快照</h4>
<p>10M rows in test table</p>
<pre><code>2019-09-06 09:22:30 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_10M_rows
2019-09-06 09:25:18 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 530K - 2.23G -
zp/database@demo_db_test_table_with_10M_rows 163K - 2.97G -
2019-09-06 09:25:21 [changch@hqdc034 ~]$
</code></pre>
<p>到1000萬筆資料為止，現在資料庫大小是這樣</p>
<pre><code>postgres@hqdc034:~$ du -sh /zp/database/10/main/
3.0G /zp/database/10/main/
postgres@hqdc034:~$
</code></pre>
<hr />
<h3 id="還原測試">還原測試</h3>
<p>最後一次做快照的時候，demo DB 裡面有一千萬筆資料，現在來砍掉500萬筆</p>
<pre><code>postgres@hqdc034:~$ time psql -c 'delete from test where a &gt; 5000000;'
DELETE 3000000
real 0m7.844s
user 0m0.024s
sys 0m0.004s
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
---------
7000000
(1 row)
real 0m0.268s
user 0m0.024s
sys 0m0.004s
postgres@hqdc034:~$
</code></pre>
<p>咦，怪怪的，為什麼只有砍掉300萬筆？
好，這邊先不管，等等正好來驗證restore的狀況</p>
<p>假設剛剛這個刪除是錯誤的動作，我要回到1000萬資料的狀態，就可以用zfs rollback 來達成</p>
<h4 id="第一次還原">第一次還原</h4>
<p>目標是還原到包含1000萬筆資料的狀態(現在是700萬筆)</p>
<pre><code>2019-09-06 09:25:21 [changch@hqdc034 ~]$ sudo service postgresql stop
* Stopping PostgreSQL 10 database server [ OK ]
2019-09-06 10:14:12 [changch@hqdc034 ~]$ sudo zfs rollback -r zp/database@demo_db_test_table_with_10M_rows
2019-09-06 10:14:28 [changch@hqdc034 ~]$ sudo service postgresql start
* Starting PostgreSQL 10 database server [ OK ]
2019-09-06 10:14:57 [changch@hqdc034 ~]$
</code></pre>
<p>檢查一下</p>
<pre><code>postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
real 0m5.019s
user 0m0.040s
sys 0m0.008s
postgres@hqdc034:~$
</code></pre>
<p>沒錯，又回到1000萬筆資料的狀態了</p>
<p>要注意的是，如果回到更之前的狀態，在該狀態之後的快照將會被清除，除非你先做clone
比如我現在要回到 200萬筆的狀態，那1000萬筆資料的快照就會被刪除</p>
<pre><code>2019-09-06 10:17:32 [changch@hqdc034 ~]$ sudo service postgresql stop
* Stopping PostgreSQL 10 database server [ OK ]
2019-09-06 10:18:50 [changch@hqdc034 ~]$ sudo zfs rollback -r zp/database@demo_db_test_table_with_2M_rows
2019-09-06 10:18:57 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 0 - 2.23G -
2019-09-06 10:19:04 [changch@hqdc034 ~]$ sudo service postgresql start
* Starting PostgreSQL 10 database server [ OK ]
2019-09-06 10:19:17 [changch@hqdc034 ~]$
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
---------
2000000
(1 row)
real 0m0.175s
user 0m0.024s
sys 0m0.008s
postgres@hqdc034:~$
</code></pre>
<p>啊，我剛剛應該先clone的&hellip;.
沒關係，我們再做一次，新增800萬筆資料，湊齊1000萬筆，然後快照</p>
<pre><code>postgres@hqdc034:~$ time psql -c 'with aa as ( select * from generate_series (1,8000000) a ) insert into test select aa.a, md5(aa.a::varchar) from aa;'
INSERT 0 8000000
real 0m35.662s
user 0m0.048s
sys 0m0.004s
postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
real 0m5.259s
user 0m0.024s
sys 0m0.008s
postgres@hqdc034:~$
</code></pre>
<p>做快照</p>
<pre><code>2019-09-06 10:19:17 [changch@hqdc034 ~]$ sudo zfs snapshot zp/database@demo_db_test_table_with_10M_rows
2019-09-06 10:22:59 [changch@hqdc034 ~]$ sudo zfs list -t snapshot
NAME USED AVAIL REFER MOUNTPOINT
zp/database@init_db_no_demo 250K - 231M -
zp/database@demo_db_just_restore 138K - 2.08G -
zp/database@demo_db_create_test_table_but_no_data 116K - 2.08G -
zp/database@demo_db_test_table_with_1M_rows 218K - 2.15G -
zp/database@demo_db_test_table_with_2M_rows 56.4M - 2.23G -
zp/database@demo_db_test_table_with_10M_rows 0 - 1.81G -
2019-09-06 10:23:02 [changch@hqdc034 ~]$
</code></pre>
<p>接著來測試看看 clone snapshot，這是基本的說明</p>
<pre><code>Clones can only be created from a snapshot and a snapshot can not
be deleted until you delete the clone that is based on this snapshot.
To create a clone, use the zfs clone command.
</code></pre>
<p>clone 會做出一份跟clone來源一模一樣的資料，在快照模式下，資料是唯讀的，clone出來後，就可以做異動。但是不能刪除clone來源的快照，會提示錯誤。</p>
<pre><code>2019-09-06 10:28:31 [changch@hqdc034 ~]$ sudo zfs clone zp/database@demo_db_test_table_with_10M_rows zp/database/clone_with_10M_rows
2019-09-06 10:29:21 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.08G 231G 22K /zp
zp/database 3.08G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 0 231G 1.81G /zp/database/clone_with_10M_rows
2019-09-06 10:29:26 [changch@hqdc034 ~]$
</code></pre>
<p>可以看到做了clone之後，多了一個 zfs dataset
試試看把資料庫路徑直接改到這個新做的dataset 看看能不能啟動資料庫
修改 /etc/postgresql/10/main/postgresql.conf，然後重起postgresql</p>
<pre><code>#data_directory = '/var/lib/postgresql/10/main' # use data in another directory
#data_directory = '/zp/database/10/main'
data_directory = '/zp/database/clone_with_10M_rows/10/main'
</code></pre>
<p><strong>啟動有比較久一點</strong> 而且好像沒成功啟動</p>
<pre><code>2019-09-06 10:32:27 [changch@hqdc034 ~]$ sudo service postgresql restart
* Restarting PostgreSQL 10 database server [ OK ]
2019-09-06 10:33:37 [changch@hqdc034 ~]$
2019-09-06 10:33:37 [changch@hqdc034 ~]$ sudo netstat -antlp |grep 5432
</code></pre>
<p>而且在 syslog &amp; postgresql log 中看不到什麼異常，怪了！
而且再啟動一次就好了？</p>
<p>再來測試一次看看</p>
<pre><code>2019-09-06 10:37:22 [changch@hqdc034 ~]$ sudo service postgresql stop
* Stopping PostgreSQL 10 database server [ OK ]
2019-09-06 10:38:03 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.24G 231G 22K /zp
zp/database 3.24G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 165M 231G 1.88G /zp/database/clone_with_10M_rows
2019-09-06 10:38:13 [changch@hqdc034 ~]$ sudo zfs destroy zp/database/clone_with_10M_rows
2019-09-06 10:38:21 [changch@hqdc034 ~]$ sudo zfs clone zp/database@demo_db_test_table_with_10M_rows zp/database/clone_with_10M_rows
2019-09-06 10:38:32 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.08G 231G 22K /zp
zp/database 3.08G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 0 231G 1.81G /zp/database/clone_with_10M_rows
2019-09-06 10:38:35 [changch@hqdc034 ~]$ sudo service postgresql start^C
2019-09-06 10:38:44 [changch@hqdc034 ~]$ sudo zfs list
NAME USED AVAIL REFER MOUNTPOINT
zp 3.08G 231G 22K /zp
zp/database 3.08G 231G 1.88G /zp/database
zp/database/clone_with_10M_rows 0 231G 1.81G /zp/database/clone_with_10M_rows
2019-09-06 10:38:45 [changch@hqdc034 ~]$ sudo service postgresql start
* Starting PostgreSQL 10 database server [ OK ]
2019-09-06 10:39:04 [changch@hqdc034 ~]$ netstat -antlp |grep 5432
(Not all processes could be identified, non-owned process info
will not be shown, you would have to be root to see it all.)
tcp 0 0 0.0.0.0:5432 0.0.0.0:* LISTEN -
tcp6 0 0 :::5432 :::* LISTEN -
2019-09-06 10:39:13 [changch@hqdc034 ~]$
</code></pre>
<p>這次就沒問題？看來是我第一次下指令的時候，不該用sudo netstat -antlp 去檢查？
anyway ，回到psql 來看看內容</p>
<pre><code>postgres@hqdc034:~$ time psql -c 'select count(*) from test;'
count
----------
10000000
(1 row)
real 0m4.716s
user 0m0.028s
sys 0m0.004s
postgres@hqdc034:~$
</code></pre>
<p>Good ，clone 出來的果然是1000萬筆資料時的狀態</p>
<hr />
<p>這次測試就先到此為止，後面再來測試zfs的 replication and send/recv</p>
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<a href="/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>
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</li>
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<a href="/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>
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</li>
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<a href="/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>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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<a href="/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>
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<sitemap>
<loc>https://h.cowbay.org/tw/sitemap.xml</loc>
<lastmod>2019-09-05T11:42:28+08:00</lastmod>
<lastmod>2019-09-06T10:42:11+08:00</lastmod>
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<a href="/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>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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<div class="article-wrapper u-cf">
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<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<img src="/images/post-default-5.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-09-06</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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></p>
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
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<a href="/tags/postgresql">postgresql</a>
<a href="/tags/zfs">zfs</a>
<a href="/tags/backup">backup</a>
<a href="/tags/restore">restore</a>
</div>
</div>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
<li>
<a href="/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>
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<link>https://h.cowbay.org/tags/backup/</link>
<description>Recent content in Backup on MCの飄狂山莊㊣</description>
<generator>Hugo -- gohugo.io</generator>
<lastBuildDate>Mon, 11 Mar 2019 14:02:30 +0800</lastBuildDate>
<lastBuildDate>Fri, 06 Sep 2019 10:42:11 +0800</lastBuildDate>
<atom:link href="https://h.cowbay.org/tags/backup/index.xml" rel="self" type="application/rss+xml" />
<item>
<title>[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</title>
<link>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</guid>
<description>&lt;p&gt;前面測試了用pgbarman / pgbackrest 來備份 postgresql&lt;/p&gt;
&lt;p&gt;這次改從system file level 來下手&lt;/p&gt;
&lt;p&gt;採用zfs 的快照來備份、還原postgresql 資料庫&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</description>
</item>
<item>
<title>Install Timeshift on Ubuntu1804</title>
<link>https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/</link>

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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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<a href="/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>
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<a href="/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>
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<a href="/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>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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</li>
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<a href="/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>
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<item>
<title>Backup</title>
<link>https://h.cowbay.org/tags/backup/</link>
<pubDate>Mon, 11 Mar 2019 14:02:30 +0800</pubDate>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/tags/backup/</guid>
<description></description>
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<title>Postgresql</title>
<link>https://h.cowbay.org/tags/postgresql/</link>
<pubDate>Thu, 05 Sep 2019 11:42:28 +0800</pubDate>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/tags/postgresql/</guid>
<description></description>
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<description></description>
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<title>Restore</title>
<link>https://h.cowbay.org/tags/restore/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/tags/restore/</guid>
<description></description>
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<title>Ssh</title>
<link>https://h.cowbay.org/tags/ssh/</link>
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<title>Zfs</title>
<link>https://h.cowbay.org/tags/zfs/</link>
<pubDate>Mon, 01 Apr 2019 15:56:27 +0800</pubDate>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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</li>
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<a href="/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>
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</li>
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<a href="/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>
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</li>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
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</li>
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<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
<li>
<a href="/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>
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<div class="article-wrapper u-cf">
<a class="bubble" href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<i class="fa fa-fw fa-pencil"></i>
</a>
<article class="default article">
<div class="featured-image">
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/">
<img src="/images/post-default-5.jpg" alt="">
</a>
</div>
<div class="content">
<h3><a href="/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></h3>
<div class="meta">
<span class="date moment">2019-09-06</span>
<span class="categories">
<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
</span>
<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
</div>
<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></p>
<a href="/post/postgresql-backup-restore-using-zfs-snapshot/" class="more"></a>
</div>
<div class="footer">
<div class="tags">
<i class="fa fa-tags"></i>
<div class="links">
<a href="/tags/postgresql">postgresql</a>
<a href="/tags/zfs">zfs</a>
<a href="/tags/backup">backup</a>
<a href="/tags/restore">restore</a>
</div>
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</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
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<a href="/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>
</li>
<li>
<a href="/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>
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<link>https://h.cowbay.org/tags/postgresql/</link>
<description>Recent content in Postgresql on MCの飄狂山莊㊣</description>
<generator>Hugo -- gohugo.io</generator>
<lastBuildDate>Thu, 05 Sep 2019 11:42:28 +0800</lastBuildDate>
<lastBuildDate>Fri, 06 Sep 2019 10:42:11 +0800</lastBuildDate>
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<item>
<title>[筆記] 用zfs的snapshot 快照功能來做 postgresql 的備份還原 / Postgresql Backup Restore Using Zfs Snapshot</title>
<link>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</link>
<pubDate>Fri, 06 Sep 2019 10:42:11 +0800</pubDate>
<guid>https://h.cowbay.org/post/postgresql-backup-restore-using-zfs-snapshot/</guid>
<description>&lt;p&gt;前面測試了用pgbarman / pgbackrest 來備份 postgresql&lt;/p&gt;
&lt;p&gt;這次改從system file level 來下手&lt;/p&gt;
&lt;p&gt;採用zfs 的快照來備份、還原postgresql 資料庫&lt;/p&gt;
&lt;p&gt;&lt;/p&gt;</description>
</item>
<item>
<title>[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</title>
<link>https://h.cowbay.org/post/backup-restore-postgresql-with-pgbackrest/</link>

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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
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<strong></strong>
<ul>
<li>
<a href="/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>
</li>
<li>
<a href="/post/backup-restore-postgresql-with-pgbackrest/">[筆記] 用pbackrest 備份還原 postgresql / Backup Restore Postgresql With Pgbackrest</a>
</li>
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<a href="/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>
</li>
<li>
<a href="/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>
</li>
</ul>
</div>
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<ul>
<li>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (28)</a>
<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (29)</a>
</li>
<li>

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