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<title> [筆記]在KVM VPS上透過 fuse-sshfs + pdumpfs 做wordpress異地備援 | My cool new Blog</title>
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<a class="bubble" href="/article/e7-ad-86-e8-a8-98-e5-9c-a8kvm-vps-e4-b8-8a-e9-80-8f-e9-81-8e-fuse-sshfs-pdumpfs-e5-81-9a-e7-95-b0-e5-9c-b0-e5-82-99-e6-8f-b4/">
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<h3><a href="/article/e7-ad-86-e8-a8-98-e5-9c-a8kvm-vps-e4-b8-8a-e9-80-8f-e9-81-8e-fuse-sshfs-pdumpfs-e5-81-9a-e7-95-b0-e5-9c-b0-e5-82-99-e6-8f-b4/">[筆記]在KVM VPS上透過 fuse-sshfs + pdumpfs 做wordpress異地備援</a></h3>
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<div class="meta">
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<span class="date moment">2013-03-22</span>
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<a href="/categories/%E5%B7%A5%E4%BD%9C%E7%AD%86%E8%A8%98">工作筆記</a>
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<p>因為之前手賤，把原有的BLOG的資料檔都砍光光，雖然文章內容都還留著，但是圖片都變成叉燒包了 <img src="http://www.cowbay.org/wp-content/plugins/ultimate-tinymce/addons/emotions/img/popobig/too_sad.png" alt="Too Sad" title="Too Sad" /></p>
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<p>不過換到新的WP之後，發現多了好多布景主題可以用，現在用的這個我就覺得很棒！<img src="http://www.cowbay.org/wp-content/plugins/ultimate-tinymce/addons/emotions/img/popobig/big_smile.png" alt="Big Smile" title="Big Smile" /></p>
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<p>也為了要避免再次發生之前手殘的錯誤，所以一直在找一些異地備援的方式。</p>
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<p>Wordpress本身的外掛雖然有很多號稱可以透過FTP之類的方式把備份檔案丟去其他地方</p>
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<p>但測試了幾個之後，發現要不就是沒有定時的功能，要不就是要額外收費。</p>
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<p>想來想去，還是乾脆自己在console下備份比較能掌握。</p>
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<p>之前有玩過lsync，這次改用另外一招 sshfs + pdumpfs 來作作看</p>
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<p></p>
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<p>一開始在這台主機上要安裝fuse-sshfs 就碰到了很多問題，yum沒有預設，要另外下載，COMPILE又發生沒compiler的狀況，一一排除後，卻出現一個無解的問題。
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> fuse: failed to open /dev/fuse: <em>Permission denied</em>
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翻了GOOGLE，大部分的解法都是把執行的帳號加入fuse群組</p>
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<p>問題是，我是用 root 執行，不應該會有這種權限的錯誤才對</p>
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<p>最後發現是因為openvz的VPS的關係，所以不能在這台去執行..<img src="http://www.cowbay.org/wp-content/plugins/ultimate-tinymce/addons/emotions/img/popobig/tired.png" alt="So Tired" title="So Tired" /></p>
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<p>好吧，反正我是要異地備援，那我去另一台KVM的VPS安裝總可以了吧！</p>
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<p>安裝過程就跟其他用yum安裝的軟體一樣(yum 真是好用！以前都還要自己解相依性的問題..)
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> yum install -y pdumpfs fuse-sshfs
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接著在remote 端建立備份用的目錄還有mount用的目錄
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> mkdir /usr/local/abc_backup
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>
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>
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> mkdir /abc_backup
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然後先把remote 端的目錄結構用sshfs mount 到/abc_backup
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> sshfs abc@abc.com:/ /abc_backup/ -p 222
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這樣的指令會要求輸入密碼，要怎麼把密碼放進去，還要再研究。</p>
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<p>好了之後就看一下是不是有沒有正確掛載
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> ls -la /abc_backup
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正常的話應該就會看到remote端的目錄結構了</p>
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<p>接下來換pdumpfs 上場</p>
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<p>pdumpfs的介紹可以看官網 <a href="http://0xcc.net/pdumpfs/index.html.en">http://0xcc.net/pdumpfs/index.html.en</a></p>
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<p>簡單說就是rsync搭配time stamp + hard link 做到差異備份這樣</p>
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<p>指令也很簡單
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> pdumpfs /abc_backup /usr/local/abc_backup
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一行就搞定了！</p>
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<p>pdumpfs 可用的參數如下，真的很簡單！
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> Usage: pdumpfs SRC DEST [BASE]
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>
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> -e, –exclude=PATTERN exclude files/directories matching PATTERN
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>
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> -s, –exclude-by-size=SIZE exclude files larger than SIZE
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>
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> -w, –exclude-by-glob=GLOB exclude files matching GLOB
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>
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> -l, –log-file=FILE write a log to FILE
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>
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> -v, –version print version information and exit
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>
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> -q, –quiet suppress all normal output
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>
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> -n, –dry-run don’t actually run any commands
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>
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> -h, –help show this help message
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沒信心的話，可以用 -n 試跑一次看看</p>
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<p>確定之後再寫到crontab裡面去！</p>
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<p>簡單整理步驟如下</p>
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<p>1.在要備份的機器上，先寫好mysql dump的crontab，大概長這樣，記得要自己加入日期參數之類的
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> mysqladmin -uroot -pxxxxx wordpress > /123/wp.sql
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2.在備份目的的機器上，安裝sshfs / pdumpfs</p>
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<p>3.在備份目的機器上，建立掛載用的目錄/abc 還有備份用的目錄/usr/local/backup/abc</p>
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<p>4.用sshfs掛載遠端目錄到/abc</p>
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<p>5.用pdumpfs 把掛載進來的遠端目錄底下的 /123/wp.sql 還有 /var/www/html/wp 都備份到 /usr/local/backup/abc</p>
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<p>6.測試完成後，在備份目的機器上，寫入crontab</p>
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<p>大功告成！</p>
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<p>我這兩個國外的VPS在互連，平均速率幾乎都在4Mb/5Mb ，拋資料真的很快！</p>
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<a href="/tags/openvz">openvz</a>
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<a href="/tags/%E7%95%B0%E5%9C%B0%E5%82%99%E6%8F%B4">異地備援</a>
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<div class="right">
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<div class="external-profiles">
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<strong>Social media</strong>
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<a href="https://twitter.com/TheRealLednerb" target="_blank"><i class="fa fa-twitter-adblock-proof"></i></a>
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<a href="https://github.com/Lednerb" target="_blank"><i class="fa fa-github"></i></a>
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</div>
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<div class="languages">
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<strong>Other languages</strong>
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<a href="/en" class="active">en</a>
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<a href="/de">de</a>
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</div>
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</div>
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</div>
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</footer>
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<div class="credits">
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<div class="container">
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<div class="copyright">
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<a href="https://github.com/Lednerb" target="_blank">
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©
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2017
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by Lednerb
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</a>
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</div>
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<div class="author">
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|
<a href="https://github.com/Lednerb/bilberry-hugo-theme" target="_blank">Bilberry Hugo Theme</a>
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</div>
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</div>
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</div>
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<script type="text/javascript" src="https://h.cowbay.org/js/externalDependencies.39c47e10e241eae2947b3fe21809c572.js" integrity="md5-OcR+EOJB6uKUez/iGAnFcg=="></script>
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<script type="text/javascript" src="https://h.cowbay.org/js/theme.ff50ae6dc1bfc220b23bf69dbb41b54e.js" integrity="md5-/1CubcG/wiCyO/adu0G1Tg=="></script>
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<script>
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$(".moment").each(function() {
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|
$(this).text(
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moment( $(this).text() )
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|
.locale( "en" )
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.format('LL')
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);
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});
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$(".footnote-return sup").html("");
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</script>
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<script>
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|
var client = algoliasearch("Y2C4RWMPXW", "50ea7f8c41c0ad233926e0be2b769ed1");
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|
|
var index = client.initIndex("default-content");
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|
$('#search').autocomplete({ hint: false, autoselect: true, debug: false },
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|
[
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|
{
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|
source: $.fn.autocomplete.sources.hits(index, { hitsPerPage: 5, filters: 'language: en' }),
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|
displayKey: function(suggestion) {
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|
return suggestion.title || suggestion.author
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|
},
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|
templates: {
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|
|
suggestion: function(suggestion) {
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|
|
return "<span class='entry " + suggestion.type + "'>"
|
|
|
+ "<span class='title'>" + suggestion.title + "</span>"
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|
|
+ "<span class='fa fa-fw " + suggestion.iconClass + "'></span>"
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|
+ "</span>"
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|
;
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},
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|
|
empty: function() {
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|
|
return "<span class='empty'>Nothing found.</span>"
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|
|
},
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|
|
footer: function() {
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|
|
return '<div class="branding">Powered by <img src="https:\/\/h.cowbay.org\/dist\/algolia-logo-light.svg" /></div>'
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|
|
}
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|
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},
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|
|
}
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|
])
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|
|
.on('autocomplete:selected', function(event, suggestion, dataset) {
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|
window.location = (suggestion.url);
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|
})
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|
.keypress(function (event, suggestion) {
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if (event.which == 13) {
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|
window.location = (suggestion.url);
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|
}
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|
});
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</script>
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</body>
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</html>
|
