{"id":208854,"date":"2025-09-29T23:27:32","date_gmt":"2025-09-29T15:27:32","guid":{"rendered":"https:\/\/www.server.hk\/blog\/208854\/"},"modified":"2025-09-29T23:27:34","modified_gmt":"2025-09-29T15:27:34","slug":"vps-128","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208854\/","title":{"rendered":"\u9999\u6e2fVPS\u81ea\u52a8\u5907\u4efd\u5931\u8d25\u6392\u67e5\uff1a7\u6b65\u5feb\u901f\u5b9a\u4f4d\u4e0e\u4fee\u590d"},"content":{"rendered":"<p>\u5728\u8fd0\u8425\u9999\u6e2fVPS\u65f6\uff0c\u81ea\u52a8\u5907\u4efd\u5931\u8d25\u4f1a\u76f4\u63a5\u5f71\u54cd\u4e1a\u52a1\u8fde\u7eed\u6027\u4e0e\u6570\u636e\u5b89\u5168\u3002\u65e0\u8bba\u4f60\u540c\u65f6\u4f7f\u7528\u7f8e\u56fdVPS\u3001\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\uff0c\u6392\u67e5\u5907\u4efd\u95ee\u9898\u65f6\u7684\u601d\u8def\u4e0e\u6b65\u9aa4\u662f\u5171\u901a\u7684\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u63d0\u4f9b\u4e00\u5957<strong>7\u6b65\u5feb\u901f\u5b9a\u4f4d\u4e0e\u4fee\u590d<\/strong>\u65b9\u6cd5\uff0c\u5305\u542b\u539f\u7406\u89e3\u6790\u3001\u5e38\u89c1\u573a\u666f\u4e0e\u9009\u8d2d\u5efa\u8bae\uff0c\u5e2e\u52a9\u4f60\u5728\u6700\u77ed\u65f6\u95f4\u5185\u6062\u590d\u7a33\u5b9a\u5907\u4efd\u6d41\u3002<\/p>\n<h2>\u5907\u4efd\u5931\u8d25\u7684\u57fa\u672c\u539f\u7406\u4e0e\u5e38\u89c1\u7c7b\u578b<\/h2>\n<p>\u81ea\u52a8\u5907\u4efd\u4e00\u822c\u7531\u4e09\u4e2a\u6838\u5fc3\u8981\u7d20\u7ec4\u6210\uff1a\u6570\u636e\u6e90\uff08\u6587\u4ef6\u3001\u6570\u636e\u5e93\u3001\u5feb\u7167\uff09\u3001\u4f20\u8f93\/\u5b58\u50a8\u8def\u5f84\uff08\u672c\u5730\u78c1\u76d8\u3001\u8fdc\u7a0b\u5b58\u50a8\u3001\u5bf9\u8c61\u5b58\u50a8\uff09\u3001\u4ee5\u53ca\u8c03\u5ea6\u5668\uff08cron\u3001systemd timers\u3001\u7b2c\u4e09\u65b9\u5907\u4efd\u8f6f\u4ef6\uff09\u3002\u5931\u8d25\u901a\u5e38\u53d1\u751f\u5728\u5176\u4e2d\u4efb\u4e00\u73af\u8282\u6216\u591a\u91cd\u53e0\u52a0\uff1a<\/p>\n<ul>\n<li>\u6570\u636e\u6e90\u8bbf\u95ee\u5931\u8d25\uff08\u6743\u9650\u3001\u88ab\u9501\u3001\u6587\u4ef6\u7cfb\u7edf\u635f\u574f\uff09<\/li>\n<li>\u78c1\u76d8\u7a7a\u95f4\u6216\u914d\u989d\u4e0d\u8db3<\/li>\n<li>\u8c03\u5ea6\u5668\u672a\u89e6\u53d1\u6216\u811a\u672c\u5f02\u5e38<\/li>\n<li>\u7f51\u7edc\u4f20\u8f93\u8d85\u65f6\u6216\u8ba4\u8bc1\u5931\u8d25\uff08SFTP\u3001S3\u3001rclone\uff09<\/li>\n<li>\u5feb\u7167\/\u5377\u7ea7\u5907\u4efd\u5931\u8d25\uff08LVM\u3001qemu\u3001\u4e91\u5e73\u53f0API\u5f02\u5e38\uff09<\/li>\n<\/ul>\n<h2>7\u6b65\u5feb\u901f\u6392\u67e5\u4e0e\u4fee\u590d\u6d41\u7a0b\uff08\u5b9e\u6218\u64cd\u4f5c\uff09<\/h2>\n<h3>\u6b65\u9aa41\uff1a\u67e5\u770b\u5907\u4efd\u65e5\u5fd7\u4e0e\u8c03\u5ea6\u5668\u6267\u884c\u8bb0\u5f55<\/h3>\n<p>\u9996\u8981\u4efb\u52a1\u662f\u83b7\u53d6\u5931\u8d25\u4fe1\u606f\u3002\u5927\u591a\u6570\u5907\u4efd\u811a\u672c\u4f1a\u8f93\u51fa\u65e5\u5fd7\uff0c\u8c03\u5ea6\u5668\uff08cron \u6216 systemd\uff09\u4e5f\u4f1a\u4fdd\u7559\u6267\u884c\u8bb0\u5f55\u3002<\/p>\n<ul>\n<li>\u67e5\u770bcron\u65e5\u5fd7\uff1a<code>grep CRON \/var\/log\/syslog | tail -n 50<\/code> \u6216 <code>sudo journalctl -u cron -b<\/code><\/li>\n<li>systemd timer\uff1a<code>sudo systemctl status your-backup.timer<\/code> \u4e0e <code>sudo journalctl -u your-backup.service -n 200<\/code><\/li>\n<li>\u5907\u4efd\u811a\u672c\u65e5\u5fd7\uff1a<code>tail -n 200 \/var\/log\/backup.log<\/code><\/li>\n<\/ul>\n<p><strong>\u5173\u6ce8\u5173\u952e\u9519\u8bef\u7801\u4e0e\u5806\u6808\u4fe1\u606f<\/strong>\uff0c\u5982\u8ba4\u8bc1\u5931\u8d25\u3001\u6743\u9650\u62d2\u7edd\u3001I\/O \u9519\u8bef\u7b49\uff0c\u8fd9\u901a\u5e38\u76f4\u63a5\u6307\u5411\u95ee\u9898\u6839\u6e90\u3002<\/p>\n<h3>\u6b65\u9aa42\uff1a\u786e\u8ba4\u78c1\u76d8\u7a7a\u95f4\u4e0e\u6587\u4ef6\u7cfb\u7edf\u72b6\u6001<\/h3>\n<p>\u5f88\u591a\u5907\u4efd\u5931\u8d25\u53ea\u662f\u56e0\u4e3a\u76ee\u6807\u78c1\u76d8\u6216\u4e34\u65f6\u76ee\u5f55\u6ca1\u7a7a\u95f4\u3002<\/p>\n<ul>\n<li>\u68c0\u67e5\u78c1\u76d8\u4f7f\u7528\uff1a<code>df -h<\/code><\/li>\n<li>\u6309\u76ee\u5f55\u7edf\u8ba1\uff1a<code>du -sh \/var\/lib\/mysql \/home \/tmp<\/code><\/li>\n<li>\u67e5\u770binode\uff1a<code>df -i<\/code><\/li>\n<li>\u5982\u679c\u4f7f\u7528LVM\u5feb\u7167\uff0c\u786e\u8ba4\u5377\u7ec4\u6709\u8db3\u591f\u7a7a\u95f4\uff1a<code>vgs<\/code> \u4e0e <code>lvs<\/code><\/li>\n<\/ul>\n<p>\u6e05\u7406\u7b56\u7565\uff1a\u5220\u9664\u65e7\u5907\u4efd\u3001\u79fb\u52a8\u5386\u53f2\u6570\u636e\u5230\u79bb\u7ebf\u5b58\u50a8\u3001\u542f\u7528\u589e\u91cf\/\u5dee\u5f02\u5907\u4efd\uff08rsync &#8211;link-dest \u6216 borg\/restic\uff09\uff0c\u907f\u514d\u6bcf\u6b21\u5168\u91cf\u4ea7\u751f\u5927\u91cf\u4e34\u65f6\u6587\u4ef6\u3002<\/p>\n<h3>\u6b65\u9aa43\uff1a\u9a8c\u8bc1\u6743\u9650\u4e0e\u6587\u4ef6\u9501\uff08\u5bfc\u81f4\u8bfb\u5199\u5931\u8d25\uff09<\/h3>\n<p>\u5907\u4efd\u811a\u672c\u901a\u5e38\u4ee5\u7279\u5b9a\u7528\u6237\u8eab\u4efd\u8fd0\u884c\uff0c\u786e\u8ba4\u8be5\u7528\u6237\u5bf9\u6570\u636e\u6e90\u4e0e\u76ee\u6807\u6709\u6b63\u786e\u6743\u9650\uff1a<\/p>\n<ul>\n<li>\u67e5\u770b\u811a\u672c\u8fd0\u884c\u7528\u6237\uff1acron \u7684 crontab\uff0csystemd \u7684 User= \u914d\u7f6e<\/li>\n<li>\u68c0\u67e5\u6743\u9650\uff1a<code>ls -l \/path\/to\/data<\/code><\/li>\n<li>\u6392\u67e5\u5360\u7528\uff1a<code>lsof | grep \/path\/to\/file<\/code> \u6216 <code>fuser -v \/path\/to\/file<\/code><\/li>\n<\/ul>\n<p>\u6570\u636e\u5e93\u5907\u4efd\u9700\u5173\u6ce8\u9501\u8868\u95ee\u9898\uff1a\u4f7f\u7528 <code>mysqldump --single-transaction<\/code> \u6216 Percona XtraBackup \u65e0\u9501\u903b\u8f91\u5907\u4efd\uff0c\u51cf\u5c11\u5907\u4efd\u671f\u95f4\u5bf9\u7ebf\u4e0a\u5199\u5165\u7684\u5e72\u9884\u3002<\/p>\n<h3>\u6b65\u9aa44\uff1a\u7f51\u7edc\u4e0e\u8ba4\u8bc1\u95ee\u9898\u6392\u67e5\uff08\u8fdc\u7a0b\u76ee\u6807\u5e38\u89c1\uff09<\/h3>\n<p>\u5f53\u5907\u4efd\u76ee\u6807\u4e3a\u8fdc\u7a0b\u670d\u52a1\u5668\u6216\u5bf9\u8c61\u5b58\u50a8\uff08S3\u3001rclone \u652f\u6301\u7684\u76ee\u6807\uff09\u65f6\uff0c\u7f51\u7edc\u4e0e\u8ba4\u8bc1\u662f\u5173\u952e\u3002<\/p>\n<ul>\n<li>\u7f51\u7edc\u8fde\u901a\u6027\uff1a<code>ping<\/code>, <code>telnet s3.example.com 443<\/code>, <code>curl -v<\/code><\/li>\n<li>SFTP\/SSH \u8ba4\u8bc1\uff1a\u5c1d\u8bd5\u624b\u52a8 <code>ssh -i key user@host<\/code>\uff0c\u786e\u8ba4\u65e0\u88ab\u62d2\u6216\u4ea4\u4e92\u63d0\u793a<\/li>\n<li>\u5bf9\u8c61\u5b58\u50a8\uff1a\u68c0\u67e5 access\/secret key\u3001\u533a\u57df\uff08region\uff09\u4e0e\u6743\u9650\u7b56\u7565<\/li>\n<li>\u4f20\u8f93\u8d85\u65f6\uff1a\u589e\u52a0 rsync\/ftp\/s3 \u5ba2\u6237\u7aef\u8d85\u65f6\u53c2\u6570\u6216\u542f\u7528\u5206\u7247\u4e0a\u4f20<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u8de8\u5927\u9646\u5907\u4efd\uff08\u4f8b\u5982\u4ece\u9999\u6e2fVPS \u5230 \u7f8e\u56fd\u4ea7\u54c1\/\u7f8e\u56fdVPS \u7b49\uff09\u8981\u6ce8\u610f\u5e26\u5bbd\u4e0e\u5ef6\u8fdf\uff0c\u5efa\u8bae\u5728\u9ad8\u5cf0\u5916\u7a97\u53e3\u6267\u884c\uff0c\u6216\u4f7f\u7528\u538b\u7f29\/\u589e\u91cf\u65b9\u5f0f\u964d\u4f4e\u6d41\u91cf\u3002<\/p>\n<h3>\u6b65\u9aa45\uff1a\u68c0\u67e5\u5907\u4efd\u8f6f\u4ef6\u4e0e\u811a\u672c\u672c\u8eab\u7684\u517c\u5bb9\u6027<\/h3>\n<p>\u811a\u672c\u6216\u5907\u4efd\u8f6f\u4ef6\u5347\u7ea7\u540e\u53ef\u80fd\u4e0d\u517c\u5bb9\u5f53\u524d\u73af\u5883\u3002\u4f8b\u5982 Python \u7248\u672c\u3001\u4f9d\u8d56\u5e93\u6216\u547d\u4ee4\u884c\u53c2\u6570\u53d8\u66f4\u90fd\u4f1a\u5bfc\u81f4\u5931\u8d25\u3002<\/p>\n<ul>\n<li>\u8fd0\u884c\u811a\u672c\u624b\u52a8\u6d4b\u8bd5\uff0c\u4f7f\u7528 <code>bash -x \/path\/backup.sh<\/code> \u6216\u5728 Python \u4e2d\u542f\u7528\u8c03\u8bd5\u6a21\u5f0f<\/li>\n<li>\u786e\u8ba4\u4e8c\u8fdb\u5236\u7248\u672c\uff1a<code>rsync --version<\/code>, <code>restic version<\/code>, <code>borg --version<\/code><\/li>\n<li>\u82e5\u4f7f\u7528\u5bb9\u5668\u5316\u6216\u865a\u62df\u5316\u5907\u4efd\u4ee3\u7406\uff0c\u68c0\u67e5\u5bb9\u5668\u65e5\u5fd7\u4e0e\u955c\u50cf\u7248\u672c<\/li>\n<\/ul>\n<p>\u4fdd\u6301\u4f9d\u8d56\u6e05\u5355\u3001\u7248\u672c\u9501\u5b9a\u4e0e\u53d8\u66f4\u8bb0\u5f55\uff0c\u80fd\u5728\u5347\u7ea7\u540e\u5feb\u901f\u56de\u6eda\u6216\u4fee\u590d\u3002<\/p>\n<h3>\u6b65\u9aa46\uff1a\u5feb\u7167\u4e0e\u865a\u62df\u5316\u5c42\u95ee\u9898\uff08KVM\u3001LVM\u3001\u4e91\u5e73\u53f0API\uff09<\/h3>\n<p>\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u4e91\u5e73\u53f0\u63d0\u4f9b\u7684VPS\u4e0a\u505a\u5377\u7ea7\u5feb\u7167\u65f6\uff0c\u865a\u62df\u5316\u5c42\u5931\u6548\u4f1a\u5bfc\u81f4\u5907\u4efd\u4e2d\u65ad\u3002<\/p>\n<ul>\n<li>\u672c\u5730 LVM \u5feb\u7167\uff1a\u786e\u8ba4 <code>lvcreate --size<\/code> \u6210\u529f\uff0c\u68c0\u67e5\u5185\u5b58\/\u78c1\u76d8\u662f\u5426\u89e6\u53d1\u81ea\u52a8\u5220\u9664<\/li>\n<li>qemu\/kvm\uff1a\u67e5\u770b libvirt\/qemu \u65e5\u5fd7\uff08\/var\/log\/libvirt\/qemu\uff09<\/li>\n<li>\u4e91API\uff1a\u82e5\u4f7f\u7528\u63a7\u5236\u9762\u677f\u89e6\u53d1\u5feb\u7167\uff08\u4f8b\u5982 VPS \u63a7\u5236\u53f0\uff09\uff0c\u68c0\u67e5 API \u8bf7\u6c42\u8fd4\u56de\u7801\u4e0e\u914d\u989d\u9650\u5236<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u5b9e\u65f6\u5199\u5165\u91cf\u5927\u7684\u7cfb\u7edf\uff0c\u5efa\u8bae\u5148\u5728\u5e94\u7528\u5c42\u505a\u4e00\u81f4\u6027\u7b56\u7565\uff08\u6570\u636e\u5e93\u51bb\u7ed3\u3001\u6587\u4ef6\u7cfb\u7edf flush\uff09\uff0c\u518d\u89e6\u53d1\u5feb\u7167\uff0c\u6216\u4f7f\u7528\u5e94\u7528\u611f\u77e5\u5907\u4efd\u5de5\u5177\u3002<\/p>\n<h3>\u6b65\u9aa47\uff1a\u6267\u884c\u6062\u590d\u6f14\u7ec3\u5e76\u5b8c\u5584\u76d1\u63a7\u544a\u8b66<\/h3>\n<p>\u5b9a\u4f4d\u5e76\u4fee\u590d\u540e\uff0c\u52a1\u5fc5\u505a\u4e00\u6b21\u5b8c\u6574\u7684\u6062\u590d\u6f14\u7ec3\uff0c\u786e\u4fdd\u5907\u4efd\u53ef\u7528\u6027\uff1a\u4ece\u5907\u4efd\u955c\u50cf\u6062\u590d\u6587\u4ef6\u3001\u8fd8\u539f\u6570\u636e\u5e93\u5e76\u542f\u52a8\u670d\u52a1\u3002<\/p>\n<ul>\n<li>\u6f14\u7ec3\u6062\u590d\u8fc7\u7a0b\u5e76\u8bb0\u5f55\u8017\u65f6\u3001\u5931\u8d25\u70b9<\/li>\n<li>\u4e3a\u5173\u952e\u5931\u8d25\u573a\u666f\u914d\u7f6e\u544a\u8b66\uff1a\u5907\u4efd\u5931\u8d25\u90ae\u4ef6\u3001PagerDuty\u3001Prometheus + Alertmanager<\/li>\n<li>\u5907\u4efd\u62a5\u544a\u81ea\u52a8\u5316\uff1a\u6bcf\u6b21\u5907\u4efd\u540e\u751f\u6210\u6821\u9a8c\u6458\u8981\uff08sha256\uff09\u5e76\u6bd4\u5bf9<\/li>\n<\/ul>\n<p><strong>\u6ca1\u6709\u6f14\u7ec3\u7684\u5907\u4efd\u7b49\u4e8e\u6ca1\u6709\u5907\u4efd<\/strong>\u3002\u6062\u590d\u65f6\u95f4\u76ee\u6807\uff08RTO\uff09\u4e0e\u6062\u590d\u70b9\u76ee\u6807\uff08RPO\uff09\u5e94\u7eb3\u5165 SLA \u5e76\u6309\u9700\u4f18\u5316\u3002<\/p>\n<h2>\u5e94\u7528\u573a\u666f\u4e0e\u4f18\u52bf\u5bf9\u6bd4\uff1a\u6587\u4ef6\u7ea7 vs \u5377\u7ea7 vs 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