{"id":209334,"date":"2025-09-30T08:28:27","date_gmt":"2025-09-30T00:28:27","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209334\/"},"modified":"2025-09-30T08:28:28","modified_gmt":"2025-09-30T00:28:28","slug":"vps-rsnapshot","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209334\/","title":{"rendered":"\u9999\u6e2fVPS\u5b9e\u6218\uff1a\u7528 rsnapshot \u5feb\u901f\u642d\u5efa\u589e\u91cf\u6570\u636e\u540c\u6b65"},"content":{"rendered":"<p>\u5728\u65e5\u76ca\u589e\u957f\u7684\u6570\u636e\u91cf\u4e0e\u5408\u89c4\u8981\u6c42\u4e0b\uff0c\u7ad9\u957f\u548c\u4f01\u4e1a\u7528\u6237\u9700\u8981\u4e00\u5957\u4f4e\u6210\u672c\u3001\u53ef\u9760\u4e14\u6613\u4e8e\u7ba1\u7406\u7684\u5907\u4efd\u89e3\u51b3\u65b9\u6848\u3002\u672c\u6587\u4ee5\u5b9e\u6218\u89d2\u5ea6\u4ecb\u7ecd\u5982\u4f55\u5728\u9999\u6e2fVPS\u4e0a\u4f7f\u7528 <strong>rsnapshot<\/strong> \u5feb\u901f\u642d\u5efa\u589e\u91cf\u6570\u636e\u540c\u6b65\u65b9\u6848\u3002\u6587\u4e2d\u5c06\u8bb2\u89e3\u539f\u7406\u3001\u914d\u7f6e\u793a\u4f8b\u3001\u5e94\u7528\u573a\u666f\u3001\u4e0e\u5176\u4ed6\u65b9\u6848\u7684\u4f18\u52bf\u5bf9\u6bd4\uff0c\u5e76\u7ed9\u51fa\u9009\u8d2d VPS\uff08\u5305\u62ec\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u3001\u7f8e\u56fdVPS\uff09\u65f6\u7684\u5b9e\u7528\u5efa\u8bae\uff0c\u5e2e\u52a9\u4f60\u4e3a\u7f51\u7ad9\u3001\u6570\u636e\u5e93\u548c\u4ee3\u7801\u5e93\u5efa\u7acb\u7a33\u5065\u7684\u5907\u4efd\u4f53\u7cfb\u3002<\/p>\n<h2>rsnapshot \u5de5\u4f5c\u539f\u7406\u6982\u8ff0<\/h2>\n<p>rsnapshot \u57fa\u4e8e rsync + hard links \u5b9e\u73b0\u201c\u65f6\u95f4\u70b9\u5feb\u7167\u201d\u5f0f\u7684\u589e\u91cf\u5907\u4efd\u3002\u5176\u6838\u5fc3\u539f\u7406\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 rsync \u5c06\u6e90\u6570\u636e\u540c\u6b65\u5230\u76ee\u6807\u76ee\u5f55\uff0c\u540c\u65f6\u4fdd\u7559\u6587\u4ef6\u7684\u4fee\u6539\u65f6\u95f4\u548c\u6743\u9650\u3002<\/li>\n<li>\u901a\u8fc7\u521b\u5efa\u786c\u94fe\u63a5\uff08hard link\uff09\u6765\u91cd\u7528\u4e0a\u4e00\u6b21\u5907\u4efd\u4e2d\u672a\u6539\u53d8\u7684\u6587\u4ef6\uff0c\u4ece\u800c\u8fbe\u5230\u8282\u7701\u5b58\u50a8\u7a7a\u95f4\u7684\u76ee\u7684\u3002<\/li>\n<li>\u6309\u914d\u7f6e\u7684\u4fdd\u7559\u7b56\u7565\uff08\u4f8b\u5982 hourly\u3001daily\u3001weekly\u3001monthly\uff09\u5faa\u73af\u8f6e\u66ff\u5907\u4efd\u76ee\u5f55\uff0c\u65e7\u7684\u5feb\u7167\u6309\u7b56\u7565\u5220\u9664\u6216\u8986\u76d6\u3002<\/li>\n<\/ul>\n<p>\u76f8\u6bd4\u4f20\u7edf\u7684\u5168\u91cf\u5907\u4efd\uff0crsnapshot \u7684\u4f18\u70b9\u662f\uff1a\u5907\u4efd\u901f\u5ea6\u5feb\u3001\u7a7a\u95f4\u6548\u7387\u9ad8\u3001\u65b9\u4fbf\u56de\u6eda\u5230\u4efb\u610f\u65f6\u95f4\u70b9\u3002\u540c\u65f6\uff0crsnapshot \u5bf9\u7f51\u7edc\u5e26\u5bbd\u3001IO \u7684\u8981\u6c42\u8f83\u4f4e\uff0c\u9002\u5408\u90e8\u7f72\u5728\u9999\u6e2fVPS \u7b49\u7f51\u7edc\u5e26\u5bbd\u7a33\u5b9a\u7684\u73af\u5883\u3002<\/p>\n<h2>\u9002\u7528\u573a\u666f<\/h2>\n<p>rsnapshot \u9002\u5408\u4e0b\u5217\u5178\u578b\u573a\u666f\uff1a<\/p>\n<ul>\n<li>\u7f51\u7ad9\u6587\u4ef6\u4e0e\u9759\u6001\u8d44\u6e90\u7684\u5468\u671f\u6027\u5907\u4efd\uff08\u9002\u7528\u4e8e\u81ea\u5efa\u7ad9\u70b9\u548c WordPress \u7b49 CMS\uff09\u3002<\/li>\n<li>\u4ee3\u7801\u4ed3\u5e93\u4e0e\u914d\u7f6e\u6587\u4ef6\u7684\u5b9a\u671f\u5feb\u7167\uff0c\u53ef\u7528\u4e8e\u8ffd\u6eaf\u914d\u7f6e\u53d8\u66f4\u3002<\/li>\n<li>\u5c0f\u578b\u6570\u636e\u5e93\uff08\u7ecfmysqldump\u5bfc\u51fa\u4e3a\u6587\u4ef6\uff09\u7684\u5907\u4efd\u4e0e\u5b58\u6863\u3002<\/li>\n<li>\u8de8\u5730\u57df\u5907\u4efd\uff1a\u5c06\u9999\u6e2f\u670d\u52a1\u5668\u4e0a\u7684\u6570\u636e\u540c\u6b65\u5230\u7f8e\u56fd\u670d\u52a1\u5668\u6216\u7f8e\u56fdVPS \u4f5c\u5f02\u5730\u5bb9\u707e\uff0c\u6216\u53cd\u5411\u5907\u4efd\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\uff1a\u5728\u9999\u6e2fVPS \u4e0a\u5feb\u901f\u90e8\u7f72 rsnapshot\uff08\u542b\u5173\u952e\u914d\u7f6e\uff09<\/h2>\n<h3>\u73af\u5883\u51c6\u5907<\/h3>\n<ul>\n<li>\u4e00\u53f0\u9999\u6e2fVPS\uff08\u5efa\u8bae SSD \u5b58\u50a8\u3001\u81f3\u5c11 20GB \u53ef\u7528\u5907\u4efd\u7a7a\u95f4\uff0c\u63a8\u8350\u5f00\u542f\u5feb\u7167\u529f\u80fd\uff09\u3002<\/li>\n<li>\u6e90\u670d\u52a1\u5668\u53ef\u4e3a\u540c\u4e00 VPS \u4e0a\u7684\u76ee\u5f55\u6216\u8fdc\u7a0b\u670d\u52a1\u5668\uff08\u5982\u7f8e\u56fdVPS\u3001\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u3002<\/li>\n<li>\u57fa\u672c\u8f6f\u4ef6\uff1arsync\u3001rsnapshot\u3001openssh-client\/openbsd-sftp\uff08Debian\/Ubuntu\uff09\uff1asudo apt-get install rsync rsnapshot openssh-client<\/li>\n<\/ul>\n<h3>\u751f\u6210 SSH \u5bc6\u94a5\u5e76\u5b9e\u73b0\u514d\u5bc6\u767b\u5f55\uff08\u63a8\u8350\uff09<\/h3>\n<p>\u4e3a\u4fdd\u8bc1\u81ea\u52a8\u5316\u5907\u4efd\u5b89\u5168\u4e14\u65e0\u4ea4\u4e92\uff0c\u5efa\u8bae\u5728\u76ee\u6807 VPS\uff08\u5907\u4efd\u63a5\u6536\u7aef\uff09\u4e0a\u4f7f\u7528 SSH key \u4ece\u6e90\u7aef\u62c9\u53d6\u6216\u6e90\u7aef push \u5230\u76ee\u6807\u3002\u793a\u4f8b\uff08\u5728\u76ee\u6807 VPS \u4e0a\uff09\uff1a<\/p>\n<p><strong>\u751f\u6210\u5bc6\u94a5<\/strong>\uff08\u65e0\u5bc6\u7801\uff09\uff1a<\/p>\n<p>ssh-keygen -t ed25519 -f ~\/.ssh\/rsnapshot_key -N &#8220;&#8221;<\/p>\n<p>\u5c06\u516c\u94a5\u590d\u5236\u5230\u6e90\u670d\u52a1\u5668\u7684 authorized_keys\uff1a<br \/>\nssh-copy-id -i ~\/.ssh\/rsnapshot_key.pub user@source_host<\/p>\n<h3>\u5173\u952e\u914d\u7f6e\u6587\u4ef6 \/etc\/rsnapshot.conf \u793a\u4f8b<\/h3>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u8f83\u4e3a\u5e38\u7528\u7684\u914d\u7f6e\u7247\u6bb5\uff08\u8bf7\u6839\u636e\u5b9e\u9645\u8def\u5f84\u8c03\u6574\uff09\uff1a<\/p>\n<p><strong>\u4e3b\u8981\u53c2\u6570\u89e3\u91ca\uff1a<\/strong><\/p>\n<ul>\n<li>snapshot_root\uff1a\u5907\u4efd\u5b58\u653e\u6839\u76ee\u5f55\uff08\u5fc5\u987b\u4e3a\u672c\u5730\u8def\u5f84\uff0crsnapshot \u5728\u6b64\u4e0b\u521b\u5efa hourly.0\u3001daily.0 \u7b49\u76ee\u5f55\uff09<\/li>\n<li>cmd_rsync\u3001cmd_ssh\uff1a\u547d\u4ee4\u8def\u5f84<\/li>\n<li>rsync_long_args\uff1arsync \u957f\u53c2\u6570\uff0c\u5305\u542b -a\uff08\u5f52\u6863\uff09\u3001-H\uff08\u786c\u94fe\u63a5\uff09\u3001&#8211;delete \u7b49<\/li>\n<li>backup\uff1a\u5b9a\u4e49\u8981\u5907\u4efd\u7684\u6e90\uff08\u672c\u5730\u8def\u5f84\u6216\u901a\u8fc7 SSH \u7684\u8fdc\u7a0b\u8def\u5f84\uff09<\/li>\n<\/ul>\n<p>\u793a\u4f8b\uff1a<\/p>\n<p>snapshot_root \/var\/backups\/rsnapshot\/<\/p>\n<p>interval hourly  6<\/p>\n<p>interval daily   7<\/p>\n<p>interval weekly  4<\/p>\n<p>cmd_ssh \/usr\/bin\/ssh<\/p>\n<p>cmd_rsync \/usr\/bin\/rsync<\/p>\n<p>rsync_long_args &#8211;delete &#8211;numeric-ids &#8211;relative &#8211;delete-excluded -a -H<\/p>\n<p>backup  user@source_host:\/var\/www\/  web\/<\/p>\n<p>backup  user@source_host:\/home\/  home\/<\/p>\n<h3>\u914d\u7f6e\u5b89\u5168\u7684 SSH \u8fde\u63a5\uff08\u5728 rsnapshot.conf \u4e2d\u6307\u5b9a key\uff09<\/h3>\n<p>\u5982\u679c\u5e0c\u671b rsnapshot \u4f7f\u7528\u6307\u5b9a\u7684\u5bc6\u94a5\uff0c\u53ef\u4ee5\u5728 rsnapshot.conf \u4e2d\u8bbe\u7f6e\uff1a<\/p>\n<p>cmd_ssh \/usr\/bin\/ssh -i \/root\/.ssh\/rsnapshot_key -o StrictHostKeyChecking=no<\/p>\n<p>\u6216\u5728 backup \u884c\u4f7f\u7528 rsync \u7684 -e \u53c2\u6570\uff1arsync -e &#8220;ssh -i \/root\/.ssh\/rsnapshot_key&#8221;<\/p>\n<h3>\u6d4b\u8bd5\u4e0e\u5b9a\u65f6\u4efb\u52a1<\/h3>\n<p>\u5148\u8fd0\u884c\u4e00\u6b21 dry-run \u68c0\u67e5\uff1a<br \/>\nrsnapshot -t hourly<\/p>\n<p>\u771f\u6b63\u6267\u884c\u4e00\u6b21\u5907\u4efd\uff08\u4ee5 hourly \u4e3a\u4f8b\uff09\uff1a<br \/>\nrsnapshot hourly<\/p>\n<p>\u4f7f\u7528 cron \u81ea\u52a8\u5316\uff08\u7f16\u8f91 \/etc\/cron.d\/rsnapshot\uff09\uff1a<\/p>\n<p>0 <em>\/4 <\/em> <em> <\/em> root \/usr\/bin\/rsnapshot hourly<\/p>\n<p>30 3 <em> <\/em> * root \/usr\/bin\/rsnapshot daily<\/p>\n<h2>\u5173\u952e\u4f18\u5316\u4e0e\u6ce8\u610f\u4e8b\u9879<\/h2>\n<ul>\n<li><strong>\u786c\u94fe\u63a5\u4e0e\u6587\u4ef6\u7cfb\u7edf<\/strong>\uff1arsnapshot \u4f9d\u8d56\u786c\u94fe\u63a5\uff0c\u76ee\u6807\u5fc5\u987b\u662f\u672c\u5730\u6587\u4ef6\u7cfb\u7edf\uff08\u4e0d\u80fd\u662f\u67d0\u4e9b\u4e0d\u652f\u6301\u786c\u94fe\u63a5\u7684\u7f51\u7edc\u6587\u4ef6\u7cfb\u7edf\uff09<\/li>\n<li><strong>\u78c1\u76d8\u7a7a\u95f4\u76d1\u63a7<\/strong>\uff1a\u5b9a\u671f\u76d1\u63a7 snapshot_root \u6240\u7528\u7a7a\u95f4\uff0c\u907f\u514d\u56e0\u65e5\u5fd7\u6216\u5927\u6587\u4ef6\u77ac\u65f6\u589e\u957f\u5bfc\u81f4\u78c1\u76d8\u8017\u5c3d<\/li>\n<li><strong>\u6392\u9664\u7b56\u7565<\/strong>\uff1a\u4f7f\u7528 exclude \u914d\u7f6e\u907f\u514d\u5907\u4efd\u4e34\u65f6\u6587\u4ef6\u3001\u7f13\u5b58\u76ee\u5f55\uff08\u5982 WordPress \u7684 cache\u3001tmp\uff09<\/li>\n<li><strong>\u5e76\u53d1\u4e0e IO \u9650\u5236<\/strong>\uff1a\u5728\u9ad8 IO \u573a\u666f\u4e0b\uff0c\u4f7f\u7528 ionice\/nice \u9650\u5236 rsync \u7684\u4f18\u5148\u7ea7\uff0c\u4fdd\u62a4\u751f\u4ea7\u670d\u52a1\u6027\u80fd<\/li>\n<li><strong>\u8fdc\u7a0b\u52a0\u5bc6\u4e0e\u4f20\u8f93\u5b89\u5168<\/strong>\uff1a\u9ed8\u8ba4\u901a\u8fc7 SSH \u4f20\u8f93\u5df2\u52a0\u5bc6\uff0c\u5bf9\u4e8e\u989d\u5916\u8981\u6c42\u53ef\u5728\u76ee\u6807\u7aef\u4f7f\u7528 filesystem-level encryption \u6216\u78c1\u76d8\u52a0\u5bc6<\/li>\n<\/ul>\n<h2>\u4e0e\u5176\u4ed6\u5907\u4efd\u65b9\u6848\u7684\u5bf9\u6bd4<\/h2>\n<h3>rsnapshot vs rsync-only<\/h3>\n<p>rsync-only \u66f4\u9002\u5408\u7b80\u5355\u7684\u540c\u6b65\uff0c\u4f46\u4e0d\u63d0\u4f9b\u65f6\u95f4\u70b9\u5feb\u7167\u4e0e\u81ea\u52a8\u8f6e\u66ff\u3002rsnapshot \u5728\u540c\u7b49\u7f51\u7edc\u6761\u4ef6\u4e0b\u63d0\u4f9b\u66f4\u597d\u7684\u7248\u672c\u7ba1\u7406\u548c\u7a7a\u95f4\u5229\u7528\u3002<\/p>\n<h3>rsnapshot vs borg \/ restic<\/h3>\n<p>borg \u548c restic \u63d0\u4f9b\u5185\u5bb9\u5bfb\u5740\u3001\u538b\u7f29\u548c\u52a0\u5bc6\uff0c\u9002\u5408\u5bf9\u5907\u4efd\u5b89\u5168\u548c\u53bb\u91cd\u6709\u66f4\u9ad8\u8981\u6c42\u7684\u573a\u666f\u3002\u76f8\u6bd4\u4e4b\u4e0b\uff0crsnapshot \u66f4\u7b80\u5355\u3001\u4e0d\u9700\u8981\u4e13\u6709\u4ed3\u5e93\u683c\u5f0f\uff0c\u6613\u4e8e\u901a\u8fc7\u6587\u4ef6\u7cfb\u7edf\u76f4\u63a5\u8bbf\u95ee\u5386\u53f2\u6587\u4ef6\uff0c\u9002\u5408\u7ad9\u957f\u4e0e\u8fd0\u7ef4\u5feb\u901f\u4e0a\u624b\u3002<\/p>\n<h3>\u8de8\u5730\u57df\u5907\u4efd\u7b56\u7565\uff08\u9999\u6e2f\u670d\u52a1\u5668\u4e0e\u7f8e\u56fd\u670d\u52a1\u5668\uff09<\/h3>\n<p>\u4e3a\u4e86\u8fbe\u5230\u66f4\u9ad8\u7684\u5bb9\u707e\u80fd\u529b\uff0c\u5efa\u8bae\u5c06\u9999\u6e2fVPS \u7684\u5907\u4efd\u5b9a\u671f\u540c\u6b65\u5230\u7f8e\u56fdVPS \u6216\u7f8e\u56fd\u670d\u52a1\u5668\uff0c\u5f62\u6210\u5f02\u5730\u5907\u4efd\u3002\u7f51\u7edc\u5ef6\u8fdf\u4f1a\u7a0d\u9ad8\uff0c\u4f46\u901a\u8fc7\u5dee\u5f02\u5316\u5907\u4efd\u548c\u5408\u7406\u7684\u4f20\u8f93\u7a97\u53e3\uff08\u5982\u591c\u95f4\uff09\u53ef\u4ee5\u964d\u4f4e\u5e26\u5bbd\u6210\u672c\u3002<\/p>\n<h2>\u9009\u8d2d VPS\uff08\u9999\u6e2fVPS \/ \u7f8e\u56fdVPS\uff09\u65f6\u7684\u5efa\u8bae<\/h2>\n<p>\u5728\u4e3a\u5907\u4efd\u642d\u5efa\u73af\u5883\u9009\u8d2d VPS \u65f6\uff0c\u8bf7\u5173\u6ce8\u4ee5\u4e0b\u8981\u70b9\uff1a<\/p>\n<ul>\n<li><strong>\u5b58\u50a8\u7c7b\u578b\u4e0e\u5bb9\u91cf<\/strong>\uff1a\u4f18\u5148\u9009\u62e9 SSD\uff0c\u786e\u4fdd\u5b58\u50a8\u6709\u8db3\u591f\u7684\u53ef\u7528\u7a7a\u95f4\u7528\u4e8e\u957f\u671f\u4fdd\u7559\u591a\u4e2a\u5feb\u7167\u3002<\/li>\n<li><strong>\u5e26\u5bbd\u548c\u6d41\u91cf<\/strong>\uff1a\u5982\u679c\u9700\u8981\u8de8\u56fd\u540c\u6b65\uff08\u4f8b\u5982\u9999\u6e2f\u670d\u52a1\u5668\u5230\u7f8e\u56fd\u670d\u52a1\u5668\uff09\uff0c\u8bf7\u786e\u8ba4\u5e26\u5bbd\u5cf0\u503c\u548c\u6708\u6d41\u91cf\u914d\u989d\u662f\u5426\u6ee1\u8db3\u9884\u671f\u3002<\/li>\n<li><strong>IO \u6027\u80fd<\/strong>\uff1a\u5907\u4efd\u5927\u91cf\u5c0f\u6587\u4ef6\u65f6 IO \u6027\u80fd\u51b3\u5b9a\u540c\u6b65\u901f\u5ea6\uff0c\u8003\u8651\u63d0\u4f9b\u826f\u597d IOPS 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