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<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>
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<span class="date moment">2018-11-30</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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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>
<p></p>
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<h3><a href="/post/ansible-selectattr-filter/">[筆記] 還是 Ansible Selectattr </a></h3>
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<span class="date moment">2018-11-29</span>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記</a>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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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>
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<h3><a href="/post/ansible-selectattr/">[筆記] Ansible how to use &#39;list&#39; in yaml file </a></h3>
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<span class="date moment">2018-11-27</span>
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<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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<h3><a href="/post/change-preferred-language-in-firefox/">[筆記] 為了metabase 修改 firefox 開啟網頁時使用的預設語言 change the preferred language in firefox for metabase</a></h3>
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<span class="date moment">2018-11-15</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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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>
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<h3><a href="/post/copy_role_in_pgsql/">PostgreSQL 直接從已經存在的使用者複製權限到另一個使用者</a></h3>
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<span class="date moment">2018-11-12</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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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>
<p></p>
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<h3><a href="/post/weird-client-server-connection/">[筆記] 詭異的client&amp;server間連線的問題，或許跟KVM有關係？</a></h3>
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<span class="date moment">2018-11-08</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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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>
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<h3><a href="/post/nice-du-report-tool-durep/">Nice Du Report Tool Durep</a></h3>
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<span class="date moment">2018-11-06</span>
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<p>最近在重新規劃前人留下的backup爛攤子
各個伺服器統一備份到一台backup storage
想說如果每天能夠看到backup storage的磁碟用量的話
就可以抓出備份空間成長速度、推估需要多大的磁碟空間
找了一些工具，結果發現 durep 這個 ubuntu 內建的工具
基本上可以滿足我的需求</p>
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<h3><a href="/post/bookstack-docker/">Bookstack Docker</a></h3>
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<span class="date moment">2018-11-06</span>
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<span class="author"><a href="/author/eric-chang">Eric Chang</a></span>
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<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>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>
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<h3><a href="/post/enable-synology-public-ssh/">筆記- 啟用群暉NAS (Synology NAS)的SSH Server 透過Publickey 認證免密碼登入</a></h3>
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<span class="date moment">2018-11-05</span>
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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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<a href="/post/weird-client-server-connection/">[筆記] 詭異的client&amp;server間連線的問題，或許跟KVM有關係？</a>
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<a href="/post/nice-du-report-tool-durep/">Nice Du Report Tool Durep</a>
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<a href="/categories/%E7%AD%86%E8%A8%98">筆記 (9)</a>
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