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add auto fetch ssl certs

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This commit is contained in:
Eric Chang
2021-08-26 12:11:25 +08:00
parent 11ca254bed
commit 509ac048fc
237 changed files with 4968 additions and 7406 deletions
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27
public/page/10/index.html
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<meta name="generator" content="Hugo 0.68.3" /><meta charset="utf-8">
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"datePublished": "2021-08-26 12:08:43 \x2b0800 CST",
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@@ -325,9 +321,7 @@ if (!doNotTrack) {
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<article>
<p>今天把其中一台proxmox 加上10G 光纖網卡，準備和另一台proxmox 組成10G 環境進行測試</p>
<p>想說把本機的zpool 拆掉，重新建立一個raid0 的空間來做clone/migrate</p>
<p>可是一直出現device busy的錯誤訊息</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/fix-zpool-device-busy-using-dmsetup/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -381,7 +375,6 @@ if (!doNotTrack) {
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<p>公司的一台老伺服器空間不足了，要執行指令都會中斷，所以想要擴充空間。</p>
<p>看起來不難搞，事實上&hellip;..</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/transfer-cent62-using-rsync/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -430,9 +423,7 @@ if (!doNotTrack) {
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<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>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/command_to_test_main_ssl/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>最近要開始測試client安裝 ubuntu 18.04 的 ansible playbook</p>
<p>因為要不斷的修正，所以想到一直有在自己電腦上執行的timeshift這個軟體</p>
<p>可以很簡單快速的備份、恢復系統狀態</p>
<p>可是不知道為什麼，在ubuntu 18.04 上安裝就是會發生錯誤&hellip;.</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-timeshift-on-ubuntu1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>買了一張 DELL 6/iR 低階的raid 卡</p>
<p>來測試把系統裝在硬體做的RAID上，結果沒想到居然不能開機&hellip;</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-ubuntu1804-on-dell-6ir-raid-controller/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<html lang="en-us">
<head>
<meta name="generator" content="Hugo 0.58.3" /><meta charset="utf-8">
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@@ -325,9 +321,7 @@ if (!doNotTrack) {
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<p>最近在弄一台機器，想要把ubuntu 18.04 安裝在software raid上</p>
<p>因為新開的機器大部分都是在proxmox上，所以很少碰實體機器了</p>
<p>結果在安裝過程中，做raid碰到一些問題，來紀錄一下</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-1804-install-root-on-raid/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -381,11 +375,8 @@ if (!doNotTrack) {
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<p>這兩天在弄兩台Freenas ，準備當作Proxmox 的Storage &amp; Server Backup</p>
<p>因為伺服器的限制，只能接六個SATA，我接了六個2T的硬碟做raid10</p>
<p>然後把Freenas 安裝在隨身碟上</p>
<p>不過會一直出現Smartd failed to start 的錯誤訊息</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/smartd-failed-to-start-in-freenas/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -439,13 +430,9 @@ if (!doNotTrack) {
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<p>最近在做一台老機器的P2V</p>
<p>偏偏user說不能關機，所以我用dd + ssh 做線上移轉</p>
<p>這部份有空再來寫</p>
<p>只是因為原來的設定有用mdadm 做raid1</p>
<p>這部份導致移轉過去proxmox 後，會出現raid degrade 導致無法正常開機</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/incredibly-slow-mdadm-rebuild/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -499,11 +486,8 @@ if (!doNotTrack) {
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<p>因為工作的關係，現在很多時間都花在VIM的操作上</p>
<p>所以之前花了滿多時間，調整出一個適合自己的VIM環境</p>
<p>原本的作法是把這個設定好的環境，丟到自己建立的gitea 上面</p>
<p>然後每到一台新的機器，就要去clone 下來</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/create-portable-vim-environment/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -557,19 +541,12 @@ if (!doNotTrack) {
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<p>前幾天公司的一台 Synology DS 415+ 發生異常</p>
<p>注意到的時候，四顆硬碟燈號都不斷的在閃爍</p>
<p>但是已經無法登入系統</p>
<p>重開機之後更慘，四顆硬碟燈號全部橘燈恆亮</p>
<p>底下的電源藍燈不斷的在閃爍</p>
<p>雖然我一再表示不希望送修了</p>
<p>一來是已經過保，二來是DS415+ 本身就有intel bug，三來是因為對synology的NAS 實在沒有愛&hellip;</p>
<p>不過主管還是希望能夠先問群暉維修的費用多少</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/synology-ds415-repair-cost/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<!DOCTYPE html>
<html lang="en-us">
<head>
<meta name="generator" content="Hugo 0.58.3" /><meta charset="utf-8">
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<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>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/10g-lab-using-proxmox-and-mellanox/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -393,9 +381,7 @@ if (!doNotTrack) {
<div class='excerpt-content'>
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<p>在上一篇 <a href="https://h.cowbay.org/post/ansible-selectattr/">Ansible how to use &lsquo;list&rsquo; in yaml file </a></p>
<p>有提到怎麼用 with_items / set_fact 來取得在yaml 檔案中的清單</p>
<p>不過就是有點醜</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-selectattr-filter/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -449,11 +435,8 @@ if (!doNotTrack) {
<div class='excerpt-content'>
<article>
<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;,
@@ -544,11 +527,8 @@ if (!doNotTrack) {
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<p>最近在測試metabase，記得幾個月前就有測試過</p>
<p>但是當時的界面和現在的樣子差很多，看樣子改版還滿勤勞的</p>
<p>所以這次改用docker來建立，根本五分鐘不到就建好了(挖鼻孔)</p>
<p>不過呢，很討厭的是，一進去就發現語系採用的是簡體中文</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/change-preferred-language-in-firefox/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -602,11 +582,8 @@ if (!doNotTrack) {
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<p>因為工作上的需求，有個資料庫需要開放給不同team的人去存取</p>
<p>雖然都是在同一台機器上的同一個資料庫</p>
<p>但是希望能夠不同team的人用不同的資料庫使用者</p>
<p>這樣萬一出事，會比較好抓兇手？？</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/copy_role_in_pgsql/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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</ul> <div class="design-credit">
<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<p>這是發生在一個夜黑風高的寂寥深夜&hellip;.. ( What The FXXX &hellip; )</p>
<p>來到這個環境之後，有一個很詭異的狀況一直困擾著我</p>
<p>在每個分公司，都會有一台伺服器作為KVM Host</p>
<p>上面跑兩台VM，一台作為ansible controller (目前沒作用)</p>
<p>另一台作為這邊所謂的 &ldquo;Build Server&rdquo;</p>
<p>用途包含了DHCP Server / Proxy Server (squid3) / APT Proxy (squid-deb-proxy)</p>
<p>問題就發生在這台 Build Server 上&hellip;</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/weird-client-server-connection/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<div class='excerpt-content'>
<article>
<p>Bookstack 是一套非常好用的線上&rdquo;筆記&rdquo;系統</p>
<p>他用圖書館/書本的概念，讓使用者可以建立自己的&rdquo;圖書館&rdquo;</p>
<p>同時在圖書館內建立不同的&rdquo;書籍&rdquo;</p>
<p>Bookstack 是一套非常好用的線上&quot;筆記&quot;系統</p>
<p>他用圖書館/書本的概念，讓使用者可以建立自己的&quot;圖書館&rdquo;</p>
<p>同時在圖書館內建立不同的&quot;書籍&rdquo;</p>
<p>而且支援 Markdown 語法</p>
<p>其他的方式像是在nextcloud上編輯 md檔案(字體太小)</p>
<p>或者是boostnote(只能在本機)</p>
<p>都或多或少有點小缺點</p>
<p>Bookstack則是沒有這些問題，不過就是系統「大」了點&hellip;</p>
<p>不過還好有人做成docker的方式來啟動，大大的降低了建置的難度(其實也沒有很難啦，只是要裝個PHP、弄個DB而已)</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/bookstack-docker/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>公司內有幾台NAS，其中有一台用來放開發人員的postgresql dump file
之前都是主要的開發人員上傳到google drive，分享出來 ，然後其他人去抓回來</p>
<p>這樣子有個問題是，當server要存取這些檔案時，就沒辦法了，除非透過一些 3rd party的軟體
像是這篇</p>
<p><a href="https://www.omgubuntu.co.uk/2017/04/mount-google-drive-ocamlfuse-linux">https://www.omgubuntu.co.uk/2017/04/mount-google-drive-ocamlfuse-linux</a></p>
<p>或者是這篇</p>
<p><a href="https://www.maketecheasier.com/mount-google-drive-ubuntu/">https://www.maketecheasier.com/mount-google-drive-ubuntu/</a></p>
<p>但是手邊的伺服器，原則上除非有必要，不然都沒有開放internet
所以導致明明檔案就在那邊，但是要取得就是很麻煩</p>
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<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<meta name="generator" content="Hugo 0.58.3" /><meta charset="utf-8">
<meta name="generator" content="Hugo 0.68.3" /><meta charset="utf-8">
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<a href="/categories/ansible">ansible</a>
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<p>最近在玩ansible + openwrt + wireguard</p>
<p>ansible 腳本寫好之後，可以把config 佈署到 openwrt 上</p>
<p>當然前提是最好用同樣的機器，不同的機器在config 上會有一些差異</p>
<p>但是這些差異常常就會造成無法連線、無法使用的狀況</p>
<p>BTW 我是用 ubiquiti 的 edgerouter X 來做</p>
<p>都弄好之後，就想說來跑個iperf3 測試一下連線速度</p>
<p>也好和之前做的 IPSEC 比較一下</p>
<p>結果很奇怪的是，明明一樣的機器、一樣用ansible 跑出來的config</p>
<p>但是有一台edgerouter X 的VPN 連接速度就是特別慢</p>
<p>而且速度都剛好卡在 99.X Mb 左右</p>
<p>就讓我很納悶了&hellip;</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/check-port-speed-in-openwrt/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>上禮拜某天在開會的時候，LINE不斷傳來訊息</p>
<p>不過因為我向來開會都很認真(驕傲，所以都沒看，接著就變成來電了</p>
<p>看來大概有啥事發生</p>
<p>不過畢竟不是正職的工作，就先放著吧</p>
<p>後來變成連學長都直接打來告訴我，某間公司的伺服器出事了，客戶找不到我</p>
<p>叫我趕快連進去看</p>
<p>是說，啊我又沒跟人家簽維護，趕什麼趕&hellip;</p>
<p>總之，開完會後就了解一下狀況</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/debian-buster-server-been-hacked/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>工作用的電腦，昨天終於難得的reboot了(uptime 看了一下，大概是三百多天)</p>
<p>結果重開機之後，發現原本在打tunnel 連 ptt 的 wireguard VPN 掛掉了</p>
<p>手動下指令也啟動不了</p>
<p>查了一下發現是 ubuntu 18.04 kernel 4.15.0-106 的包</p>
<p>看來就連kernel 最好都不要自動升級&hellip;</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-kernel-4-15-0-106-unable-to-start-wireguard-interface/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>ubuntu 18.04 預設移掉了 /etc/rc.local 的功能</p>
<p>變成要用 systemd 的方式來運作，可是有點難用…</p>
<p>紀錄一下步驟，再來研究怎麼整合到 preseed 裡面</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-1804-preseeds/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>這是之前做過的task，client透過pxe開機後，會自動安裝ubuntu 14.04</p>
<p>在安裝完成後，會發出郵件通知管理者已經安裝完成</p>
<p>可是某次ansible 更新之後，反而沒辦法安裝完成</p>
<p>這次順手修改一下，同時更新了ansible 的template</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-1404-preseed/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
@@ -860,7 +830,7 @@ if (!doNotTrack) {
</ul> <div class="design-credit">
<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<a href="/categories/ansible">ansible</a>
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<p>ubuntu 18.04 的 DNS 設定很煩</p>
<p>系統預設會用NetworkManager 去管理</p>
<p>然後NetworkManager 又很「靈活」的許多種修改 /etc/resolv.conf 的方式</p>
<p>之前都是很粗暴的停用 NetworkManager</p>
<p>但是用筆電的user 又需要用 NetworkManager 來管理無線網路</p>
<p>今天找了一下文件，讓NetworkManager 可以執行，卻不會去異動 /etc/resolv.conf</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/config-networkmanager-in-ubuntu-to-stop-modify-resolvconf/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>早上忘了要幹什麼，去看到手上的自然人憑證到期日是今年的 <sup>4</sup>&frasl;<sub>17</sub></p>
<p>早上忘了要幹什麼，去看到手上的自然人憑證到期日是今年的 4/17</p>
<p>想說快到期了，看看能不能線上申請展延</p>
<p>結果辦公室沒有Linux 可以用的讀卡機</p>
<p>OOXX 咧，我們可是號稱全Linux 環境捏！</p>
<p>結果居然沒有對應的硬體！？</p>
<p>於是馬上敗了一台據說有支援 Linux 的 IT 850UM 讀卡機！</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/install-it500u-card-reader-in-ubuntu-1804/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>前幾天修復了因為intel cpu bug 導致無法使用的 synology DS415+</p>
<p>詳情請看 <a href="https://h.cowbay.org/post/first-try-synology-ha/">https://h.cowbay.org/post/first-try-synology-ha/</a></p>
<p>今天趁尾牙前夕，手邊沒啥要緊事</p>
<p>就來玩玩看promox 加上 synology high availability 再加上 NFS share 的環境</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/proxmox-with-synology-high-availability/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>上禮拜，原本擔任 proxmox cluster 的主要 storage 的 ds415+ 掛點了</p>
<p>原因應該就是之前的 intel c2000 series cpu 的 bug</p>
<p>只是不知道為什麼這台兩三年來都沒有關機的NAS</p>
<p>比其他三台多撐了那麼久 (已經有兩台送修回來，一台也是同樣症狀，被放在一邊)</p>
<p>趁著這次機會，看看網路上說的換電阻大法有沒有用！</p>
<p>如果有用，就拿這兩台來玩玩 synology high availability !</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/first-try-synology-ha/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>昨天老闆在slack 上面問說現在的幾台 DB Server 有沒有跑過 pgbench</p>
<p>分數大概如何，想要跟他的筆電做個比較</p>
<p>之前有跑過幾次，這次就順便測試一下不同的硬體配置、以及不同的軟體版本</p>
<p>對於pgbench 跑分會有多大的影響</p>
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<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<p>2020/01/02 , 2020年上工的第一天，群暉的 DS415+ NAS 掛了！</p>
<p>因為群暉的文件在最關鍵的一步寫得亂七八糟！</p>
<p>所以在這邊紀錄一下我操作的步驟！</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/rescue-synology-nas-with-ubuntu-livecd/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>2020/01/02 2020 上工的第一天，公司碩果僅存的唯一一台 Synology DS415+ 也終於掛了</p>
<p>開機沒多久就連不上，反覆幾次之後，出現了開機時所有燈號都狂閃的狀況</p>
<p>終於宣告不治</p>
<p>問題很明顯的就是Intel C2000 系列 CPU 的瑕疵</p>
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<p>今天在寫一支客製化 firefox 的playbook</p>
<p>因為firefox 會給每個user 建立一個由亂數字串組成的default profile</p>
<p>所以每個user的 default profile 都不同</p>
<p>也因此在用register處理的時候，碰到了一些問題</p>
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<p>正確來說，我不曉得到底怎麼「稱呼」這個 forwardx11 / forwardagent</p>
<p>總之就是在寫一隻ansible playbook</p>
<p>目的是用來安裝、設定 firefox</p>
<p>包含安裝 firefox addon</p>
<p>但是一開始在執行的時候，碰到了一些錯誤</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ansible-ssh-forwardagent/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>老闆提到想要把新系統的 postgresql 資料庫都撈到記憶體裡面</p>
<p>但是否決了我提出的ramdisk 作法(因為當機的話，資料就沒了)</p>
<p>在找資料的時候，發現了這個postgresql 的 pg_prewarm extension</p>
<p>好像有點意思？就來測試看看吧！</p>
<p>只是目前還不知道該怎麼解讀測試的數據就是了&hellip;</p>
<p>幹！林北真的不是 DBA 啦 =.=</p>
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<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<a href="/categories/ansible">ansible</a>
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<p>剛剛在跑一個修改過的playbook，卻發現一個詭異的狀況</p>
<p>在用template產生檔案之前，爲了避免錯誤，所以我先用 file module 去建立目錄</p>
<p>怪就怪在，建立目錄的task沒錯，但是要產生檔案時，卻出現了目的目錄不存在的錯誤</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/accidentally-typed-an-extra-space-in-ansible-playbook/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>這幾天在ansible 寫了一份新的playbook給developer 用</p>
<p>然後user反映說，希望能在ubuntu 18.04 內建的dock 裏面新增一個gnome-terminal的icon</p>
<p>我才發現原來之前的寫法不能用在 ubuntu 18.04 上</p>
<p>只好又弄了一份出來</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/add-system-wide-favorite-apps-in-dconf/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>最近在準備升級client 的作業系統，從 ubuntu 14.04 準備升級到 18.04 或明年的 20.04</p>
<p>因為公司政策的關係，所以現在要連接internet ，需要申請</p>
<p>然後 user 再去系統的proxy 設定新增一個 PAC 檔</p>
<p>但是這個動作其實是去叫NetworkManager 這個服務</p>
<p>可是在18.04 上，我會把這個服務關掉，因為他會干擾我的DNS設定</p>
<p>所以想試試看有沒有辦法不使用 NetworkManager 服務</p>
<p>又能夠在 user level 修改 proxy 參數</p>
<p>就想到了用 dconf 來做</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/ubuntu-dconf-proxy-settings/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>最近上班閒得發慌，沒事就上 github 找看看有沒有什麼好玩的專案</p>
<p>就不小心發現了這個 streisand</p>
<p><a href="https://github.com/StreisandEffect/streisand">https://github.com/StreisandEffect/streisand</a></p>
<p>玩了一下，發現這根本就是終極的VPN Server solution ..</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/awesome-all-in-one-vpn-server-streisand/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>這兩天在找關於在 ubuntu 中做搜尋的軟體</p>
<p>意外找到一個非常好用的工具 ulauncher</p>
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</ul> <div class="design-credit">
<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<p>最近都在弄postgresql</p>
<p>備份、還原測試得差不多了，就等著看到時候要用什麼方式</p>
<p>前幾天看到 pg_auto_failover 這個postgresql 的extension</p>
<p><a href="https://github.com/citusdata/pg_auto_failover">https://github.com/citusdata/pg_auto_failover</a></p>
<p>感覺挺不錯的，看起來設定很簡單，雖然之前已經測試了 keepalived 做 HA</p>
<p>不過，反正當作練功嘛，多測試一套也不錯！</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/pg_auto_failover_in_ubuntu_1804_psql_11/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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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>
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@@ -832,7 +821,7 @@ if (!doNotTrack) {
</ul> <div class="design-credit">
<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<meta name="generator" content="Hugo 0.58.3" /><meta charset="utf-8">
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<p>很久以前就有看到這個用來備份postgresql 的 pgbarman</p>
<p><a href="https://www.pgbarman.org/">https://www.pgbarman.org/</a></p>
<p>前幾天老闆在slack 上面又提到，所以這次就花了點時間來玩玩看</p>
<p>不過呢，雖然有弄起來，但是還真不知道有些問題是怎麼解決的&hellip;</p>
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<p>因為老闆說要試試看用GPU 來跑postgresql 威力</p>
<p>手邊剛好有一張 geforce gt 720</p>
<p>一開始沒想太多，看到有這張卡的驅動程式，然後CUDA也有支援</p>
<p>就直接從桌機拔下來，接去LAB Server ，然後就開始一連串的難關了&hellip;</p>
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<p>最近一直在玩 wireguard ，先前把各個分公司和總部的VPN 改用 wireguard 建立</p>
<p>想說再打個VPN tunnel 來當跳板連 ptt 好了</p>
<p>因為wireguard 建立很簡單，而且又可以指定想要繞出去的路由，不會影響原本的網路環境</p>
<p>本來是在vultr 的VPS上面建立這個tunnel</p>
<p>但是那台VPS連去ptt 很頓，卡卡的</p>
<p>所以改用google cloud platform 的free tier 來做</p>
<p>反正只是拿來當跳板，不會有什麼流量、運算產生，可以一直保持免費的狀態</p>
<div class="more-link-wrapper"><a class="more-link" href="https://h.cowbay.org/post/do-no-use-10-0-0-0-private-ipaddr-in-gcp/">Read the post<span class="screen-reader-text">This is a Standard Post</span></a></div>
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<p>因為實在受夠了現在用的 openwrt + strongswan 建立 IPSec VPN</p>
<p>雖然說其實沒有什麼不好，但是畢竟不是我建立的，而當初的文件也都不見了</p>
<p>完全沒辦法了解當時設計的邏輯，造成後續debug 困難</p>
<p>可以想像一下，一台VPN router ping 不到remote、ping不到internet、甚至ping不到自己 是要怎麼debug !?(翻桌</p>
<p>之前買了兩台edgerouter X 拿來玩了一下 wireguard，感覺還不錯，不過只有測試到點對點</p>
<p>這次試試看躲在gateway後面，看看能不能建立多點的VPN環境</p>
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<p>之前總部和分公司之間 是用buffalo 的小AP 灌 openwrt</p>
<p>然後用strongswan 來打 IPSEC site to site VPN</p>
<p>config 看起來不是很難 (只是看起來)</p>
<p>但是實際上已經找不到當初的文件</p>
<p>所以要維護很困難(光那些RSA KEY 就不知道為何、如何產生)</p>
<p>後來採購了兩台edgerouter X 做測試</p>
<p>也用openvpn 成功的建立了 site to site VPN</p>
<p>本來想說 openvpn 已經夠簡單了</p>
<p>今天看到文章說用wireguard 可以更簡單</p>
<p>於是研究了一下，發現還真的很簡單！</p>
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@@ -868,7 +838,7 @@ if (!doNotTrack) {
</ul> <div class="design-credit">
<p>&copy; 2018 Göran Svensson</p>
<p>© 2018 Göran Svensson</p>
<p>Nederburg Hugo Theme by <a href="https://appernetic.io">Appernetic</a>.</p>
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<p>之前為了能夠在執行完 ansible playbook 後，能有個log 可以看</p>
<p>所以在每次執行的時候，都要加入 tee 的指令</p>
<p>像是</p>
<pre><code>ANSIBLE_CONFIG=/home/D/ansiblecontrol/ansible.cfg /usr/local/bin/ansible-playbook /home/D/ansiblecontrol/playbook.user_client.yml --vault-password-file=/home/D/ansiblecontrol/vault.passwd -i /home/D/ansiblecontrol/inventory/production -f1 --limit tyuserclients |tee /tmp/tyuserclients.log
</code></pre>
<p>一直都是放在crontab 裡面執行，也就沒有去管他</p>
</code></pre><p>一直都是放在crontab 裡面執行，也就沒有去管他</p>
<p>反正也沒有人關心結果怎樣 (攤手</p>
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<p>最近有個任務，需要大量安裝client</p>
<p>想用PXE來處理，只要user開機按F12(acer 桌機) 選擇PXE Boot</p>
<p>然後選擇OS版本，就可以自動進行安裝</p>
<p>安裝完成後，會自動重新開機，接著就用ansible來做user環境設定</p>
<p>PXE的部份本來是沒有什麼問題，自動安裝系統的部份都做好了</p>
<p>可是因為這次的量比較多，想說讓每一台在完成PXE安裝後的第一次重開機</p>
<p>就送出一封郵件來通知我，說已經完成安裝，可以執行ansible 了</p>
<p>看似很簡單的一件事情，卻搞了我兩天&hellip;.</p>
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<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>
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<p>在ansible中，關於如何引用自定義的變數，一直讓我很頭疼</p>
<p>尤其是有牽涉到從外部導入yaml檔案時，更是常常讓我不知道到底該怎麼抓出想要的變數</p>
<p>這次還是用selectattr 來處理，希望下次能夠記得&hellip;</p>
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<p>之前在LAN/windows環境下，一直都是用ultravnc/winvnc/tigervnc之類的VNC軟體</p>
<p>但是如果要過 internet ，就會碰到各種開port的問題</p>
<p>在這種環境下，就有了當時 teamviewer 的橫空出世</p>
<p>解決了開PORT的問題，讓被控端(通常是資訊技術相對弱勢，需要接受幫助的一方)不需要懂太多</p>
<p>只要下載teamviewer被控端，開啟後報ID 給協助者就好了</p>
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"dateModified" : "2021-07-20 09:19:47 \x2b0800 CST",
"datePublished": "2021-08-26 12:08:43 \x2b0800 CST",
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<p>前幾天接的一個case</p>
<p>因為費用的關係，所以沒有考慮用傳統定義上的伺服器(DELL R640)</p>
<p>改採用比較高階一點的洋垃圾，規格大概是 Intel E5-2680V2 x2 + 64G RAM + 128G SSD x2 (OS) + 960G SSD x4 (raid 10 , zfs)</p>
<p>storage 選擇QNAP NAS TS-932X + 960G SSD x 4 (raid 10 , NFS) + QNAP 10G Switch QSW-1280C-8C</p>
<p>既然storage這邊選用了10G的機種，伺服器上當然也要增加10G網卡</p>
<p>一樣，成本考量，就不用INTEL 了，買了這張 ASUS 10G 網卡</p>
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<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>
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<p>工作上常會需要用ssh登入遠端主機檢查LOG，有必要的時候，還要把log複製回本機來處理。</p>
<p>以前都是傻傻的用 scp 傳檔案</p>
<p>之前就記得有這個xclip/xsel 可以用，但是一直沒有弄清楚怎麼執行</p>
<p>早上研究了一下，順便做個筆記。</p>
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<p>最近因為一直碰到硬碟故障的問題，算起來那一批同時購買的5X顆 seagate 2T硬碟，已經有一半以上故障返修了&hellip;.</p>
<p>然後又因為一直沒有添購新的硬碟，只能用這些快過保/已過保的撐著</p>
<p>所以最近不斷的在更換機器內的硬碟，而且還沒有熱插拔！</p>
<p>也導致原本負責處理盤點資產的同事困擾，因為跟手邊的紀錄已經對不起來了</p>
<p>然後就變成要對資產的時候，需要一台一台登入，然後去下不同的指令，取得想要的硬體資訊，超級麻煩的！</p>
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<p>今天發生一件有點詭異的事情，本來應該要經過某個指令才會產生的檔案</p>
<p>居然不知為何自己產生了，在我記憶中沒有去執行過那個指令</p>
<p>翻了一下 bash_history ，裡面也只有下過哪些指令，沒有紀錄時間，完全沒有參考價值(攤手)</p>
<p>所以翻了一下網路，至少把這兩台主要跑ansible的機器的log功能補上紀錄所有指令以及時間的部份</p>
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