{"id":208840,"date":"2025-09-29T23:13:53","date_gmt":"2025-09-29T15:13:53","guid":{"rendered":"https:\/\/www.server.hk\/blog\/208840\/"},"modified":"2025-09-29T23:13:54","modified_gmt":"2025-09-29T15:13:54","slug":"vps-124","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208840\/","title":{"rendered":"\u9999\u6e2fVPS\u6570\u636e\u5907\u4efd\u5931\u8d25\u539f\u56e0\u89e3\u6790\uff1a\u5b9a\u4f4d\u8981\u70b9\u4e0e\u5feb\u901f\u4fee\u590d\u7b56\u7565"},"content":{"rendered":"<h2>\u5f15\u8a00<\/h2>\n<p>\u5bf9\u4e8e\u4f9d\u8d56\u865a\u62df\u79c1\u6709\u670d\u52a1\u5668\uff08VPS\uff09\u6258\u7ba1\u4e1a\u52a1\u7684\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u548c\u5f00\u53d1\u8005\u800c\u8a00\uff0c<strong>\u6570\u636e\u5907\u4efd\u5931\u8d25<\/strong>\u662f\u4e00\u9879\u975e\u5e38\u5371\u9669\u4e14\u5e38\u89c1\u7684\u95ee\u9898\u3002\u5c24\u5176\u662f\u5728\u9999\u6e2f\u8282\u70b9\u73af\u5883\u4e0b\uff08\u6216\u6df7\u5408\u4f7f\u7528\u7f8e\u56fdVPS\u3001\u9999\u6e2f\u670d\u52a1\u5668\u3001\u7f8e\u56fd\u670d\u52a1\u5668\u7b49\u591a\u5730\u57df\u90e8\u7f72\u65f6\uff09\uff0c\u7f51\u7edc\u3001\u5b58\u50a8\u4e0e\u6743\u9650\u7b49\u591a\u56e0\u7d20\u90fd\u4f1a\u5bfc\u81f4\u5907\u4efd\u4e2d\u65ad\u6216\u5931\u8d25\u3002\u672c\u6587\u4ece\u539f\u7406\u3001\u5e38\u89c1\u5931\u8d25\u539f\u56e0\u3001\u5b9a\u4f4d\u8981\u70b9\u5230\u5feb\u901f\u4fee\u590d\u7b56\u7565\u9010\u6b65\u5c55\u5f00\uff0c\u5e2e\u52a9\u4f60\u5728\u6700\u77ed\u65f6\u95f4\u5185\u6062\u590d\u5907\u4efd\u80fd\u529b\u5e76\u63d0\u5347\u7cfb\u7edf\u7684\u9c81\u68d2\u6027\u3002<\/p>\n<h2>\u5907\u4efd\u539f\u7406\u4e0e\u5e38\u89c1\u5e94\u7528\u573a\u666f<\/h2>\n<p>\u7406\u89e3\u5907\u4efd\u7684\u57fa\u672c\u539f\u7406\u6709\u52a9\u4e8e\u66f4\u5feb\u5b9a\u4f4d\u95ee\u9898\u3002\u5e38\u89c1\u7684\u5907\u4efd\u65b9\u5f0f\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u5feb\u7167\u7ea7\u5907\u4efd\uff08Snapshot\uff09\uff1a\u501f\u52a9\u5e95\u5c42\u865a\u62df\u5316\u6216\u5b58\u50a8\u5feb\u7167\u529f\u80fd\uff0c\u5b9e\u73b0\u77ac\u65f6\u6570\u636e\u4e00\u81f4\u6027\u3002<\/li>\n<li>\u6587\u4ef6\u7ea7\u589e\u91cf\/\u5168\u91cf\u5907\u4efd\uff1a\u901a\u8fc7 rsync\u3001rdiff \u6216\u5546\u4e1a\u5907\u4efd\u8f6f\u4ef6\u9010\u6587\u4ef6\u540c\u6b65\u3002<\/li>\n<li>\u6570\u636e\u5e93\u903b\u8f91\u5907\u4efd\uff1a\u4f8b\u5982\u4f7f\u7528 mysqldump\u3001pg_dump \u5bfc\u51fa\u903b\u8f91\u6570\u636e\u3002<\/li>\n<li>\u5757\u7ea7\u590d\u5236\u4e0e\u5b9e\u65f6\u590d\u5236\uff1a\u4f8b\u5982\u4f7f\u7528 DRBD\u3001ZFS send\/receive\u3002<\/li>\n<\/ul>\n<p>\u5728\u9999\u6e2fVPS\u4e0a\uff0c\u5e38\u89c1\u573a\u666f\u5305\u62ec\u7f51\u7ad9\u9759\u6001\/\u52a8\u6001\u6587\u4ef6\u5907\u4efd\u3001\u6570\u636e\u5e93\u5907\u4efd\u3001\u5bb9\u5668\u6216\u865a\u62df\u5316\u955c\u50cf\u5907\u4efd\u3002\u5bf9\u4e8e\u8de8\u56fd\u4f01\u4e1a\uff0c\u8fd8\u53ef\u80fd\u5b58\u5728\u5907\u4efd\u81f3\u7f8e\u56fdVPS\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u4f5c\u4e3a\u707e\u5907\u7ad9\u70b9\u7684\u9700\u6c42\u3002<\/p>\n<h2>\u5bfc\u81f4\u9999\u6e2fVPS\u6570\u636e\u5907\u4efd\u5931\u8d25\u7684\u6838\u5fc3\u539f\u56e0\u89e3\u6790<\/h2>\n<h3>1. \u7f51\u7edc\u548c\u5e26\u5bbd\u95ee\u9898<\/h3>\n<p>\u5907\u4efd\u8fc7\u7a0b\u901a\u5e38\u9700\u8981\u5927\u91cf\u6570\u636e\u4f20\u8f93\uff0c\u5c24\u5176\u662f\u521d\u6b21\u5168\u5907\u6216\u5927\u89c4\u6a21\u955c\u50cf\u540c\u6b65\u65f6\u3002\u5178\u578b\u95ee\u9898\u6709\uff1a<\/p>\n<ul>\n<li>\u5e26\u5bbd\u9971\u548c\u6216\u5cf0\u503c\u6d41\u91cf\u88ab\u9650\u901f\uff0c\u5bfc\u81f4\u8fde\u63a5\u4e2d\u65ad\u6216\u8d85\u65f6\u3002<\/li>\n<li>\u4e22\u5305\u7387\u9ad8\u3001\u5ef6\u8fdf\u5267\u589e\uff0c\u7279\u522b\u662f\u5728\u8de8\u5883\u4f20\u8f93\uff08\u5982\u9999\u6e2f\u5230\u7f8e\u56fdVPS\uff09\u65f6\u66f4\u660e\u663e\u3002<\/li>\n<li>ISP\/\u4e91\u5546\u7684\u7f51\u7edc\u7b56\u7565\u6216ACL\u963b\u6b62\u7279\u5b9a\u7aef\u53e3\u6216IP\u3002<\/li>\n<\/ul>\n<h3>2. \u5b58\u50a8\u6027\u80fd\u4e0eIO\u74f6\u9888<\/h3>\n<p>\u5907\u4efd\u4efb\u52a1\u5bf9\u78c1\u76d8IO\u6709\u8f83\u9ad8\u8981\u6c42\u3002\u5e38\u89c1\u8868\u73b0\u4e3a\uff1a<\/p>\n<ul>\n<li>\u78c1\u76d8\u961f\u5217\u79ef\u538b\uff08iowait \u9ad8\uff09\uff0c\u5bfc\u81f4\u5907\u4efd\u8fdb\u7a0b\u8d85\u65f6\u6216\u5931\u8d25\u3002<\/li>\n<li>\u5b58\u50a8\u914d\u989d\u4e0d\u8db3\u6216\u6587\u4ef6\u7cfb\u7edf\u9519\u8bef\uff08\u5982 inode \u7528\u5c3d\u3001\u6587\u4ef6\u7cfb\u7edf\u53ea\u8bfb\uff09\u3002<\/li>\n<li>\u5e95\u5c42\u5feb\u7167\u5931\u8d25\uff1aLVM\u3001ZFS\u3001\u4e91\u76d8\u5feb\u7167\u63a5\u53e3\u51fa\u9519\u3002<\/li>\n<\/ul>\n<h3>3. \u6743\u9650\u4e0e\u6587\u4ef6\u9501\u5b9a<\/h3>\n<p>\u5907\u4efd\u811a\u672c\u9700\u8981\u8bbf\u95ee\u7279\u5b9a\u8def\u5f84\u4e0e\u6570\u636e\u5e93\u6743\u9650\uff1a<\/p>\n<ul>\n<li>\u6587\u4ef6\/\u76ee\u5f55\u6743\u9650\u9519\u8bef\u5bfc\u81f4\u8bfb\u4e0d\u5230\u6570\u636e\uff08\u5c24\u5176\u662f\u7cfb\u7edf\u7528\u6237\u8eab\u4efd\u5207\u6362\u65f6\uff09\u3002<\/li>\n<li>\u6570\u636e\u5e93\u6743\u9650\u4e0d\u8db3\u6216\u672a\u542f\u7528\u70ed\u5907\/\u590d\u5236\u8d26\u53f7\u3002<\/li>\n<li>\u6587\u4ef6\u88ab\u5360\u7528\/\u9501\u5b9a\u65e0\u6cd5\u4e00\u81f4\u6027\u8bfb\u53d6\uff0c\u5bfc\u81f4\u903b\u8f91\u5907\u4efd\u6570\u636e\u4e0d\u5b8c\u6574\u3002<\/li>\n<\/ul>\n<h3>4. \u5907\u4efd\u8f6f\u4ef6\u6216\u811a\u672c\u903b\u8f91\u9519\u8bef<\/h3>\n<p>\u811a\u672c\u4e2d\u7684\u8def\u5f84\u3001\u6392\u9664\u89c4\u5219\u6216\u7248\u672c\u517c\u5bb9\u6027\u95ee\u9898\u4f1a\u5bfc\u81f4\u5931\u8d25\uff1a<\/p>\n<ul>\n<li>\u7248\u672c\u5347\u7ea7\u540e\u53c2\u6570\u6216\u8fd4\u56de\u7801\u53d8\u5316\u672a\u5904\u7406\u3002<\/li>\n<li>\u6392\u9664\u89c4\u5219\u8bef\u5199\u5bfc\u81f4\u5ffd\u7565\u4e86\u5173\u952e\u76ee\u5f55\u6216\u538b\u7f29\u5931\u8d25\u3002<\/li>\n<li>\u5e76\u53d1\u4efb\u52a1\u51b2\u7a81\uff0c\u5bfc\u81f4\u8fdb\u7a0b\u4e92\u76f8\u5e72\u6270\u6216\u9501\u7ade\u4e89\u3002<\/li>\n<\/ul>\n<h3>5. \u8d44\u6e90\u9650\u5236\u4e0e\u8c03\u5ea6\u51b2\u7a81<\/h3>\n<p>\u5982CPU\u3001\u5185\u5b58\u6216\u5e76\u53d1\u6587\u4ef6\u53e5\u67c4\u9650\u5236\u4e5f\u4f1a\u5bfc\u81f4\u5907\u4efd\u4e2d\u65ad\uff1a<\/p>\n<ul>\n<li>\u5185\u5b58\u4e0d\u8db3\u5bfc\u81f4\u538b\u7f29\u6216\u52a0\u5bc6\u8fdb\u7a0b\u88abOOM\u6740\u6b7b\u3002<\/li>\n<li>\u8fdb\u7a0b\u6570\/\u6587\u4ef6\u53e5\u67c4\u9650\u5236\uff08ulimit\uff09\u89e6\u53d1\u5931\u8d25\u3002<\/li>\n<li>\u8ba1\u5212\u4efb\u52a1\uff08cron\/crontab\uff09\u65f6\u95f4\u91cd\u53e0\uff0c\u591a\u4e2a\u5907\u4efd\u540c\u65f6\u6267\u884c\u3002<\/li>\n<\/ul>\n<h3>6. \u6570\u636e\u4e00\u81f4\u6027\u4e0e\u4e8b\u52a1\u6027\u95ee\u9898<\/h3>\n<p>\u5bf9\u4e8e\u6570\u636e\u5e93\u6216\u9ad8\u5e76\u53d1\u5199\u5165\u573a\u666f\uff0c\u672a\u91c7\u7528\u4e00\u81f4\u6027\u5feb\u7167\u6216\u5e94\u7528\u5c42\u51bb\u7ed3\uff0c\u4f1a\u9020\u6210\u5907\u4efd\u6062\u590d\u5931\u8d25\u6216\u6570\u636e\u635f\u574f\u3002<\/p>\n<h3>7. \u5916\u90e8\u56e0\u7d20\uff1aDNS\u3001\u65f6\u95f4\u540c\u6b65\u3001\u8bc1\u4e66\u8fc7\u671f<\/h3>\n<p>\u8de8\u57df\u5907\u4efd\u65f6\uff0cDNS\u89e3\u6790\u9519\u8bef\u3001NTP\u4e0d\u540c\u6b65\u6216TLS\u8bc1\u4e66\u8fc7\u671f\u4e5f\u4f1a\u4e2d\u65ad\u5907\u4efd\u94fe\u8def\u3002<\/p>\n<h2>\u5b9a\u4f4d\u8981\u70b9\uff1a\u5982\u4f55\u5feb\u901f\u627e\u51fa\u6545\u969c\u6839\u6e90<\/h2>\n<p>\u5b9a\u4f4d\u5907\u4efd\u5931\u8d25\u9700\u8981\u7cfb\u7edf\u5316\u6392\u67e5\uff0c\u5efa\u8bae\u6309\u4ee5\u4e0b\u4f18\u5148\u7ea7\u6267\u884c\uff1a<\/p>\n<h3>1. \u68c0\u67e5\u5907\u4efd\u65e5\u5fd7\u4e0e\u8fd4\u56de\u7801<\/h3>\n<p>\u6700\u76f4\u63a5\u7684\u7ebf\u7d22\u6765\u81ea\u5907\u4efd\u7a0b\u5e8f\u65e5\u5fd7\uff08\u4f8b\u5982 rsync\u3001scp\u3001duplicity\u3001Bacula\u3001Borg \u53ca\u6570\u636e\u5e93\u5bfc\u51fa\u65e5\u5fd7\uff09\u3002<\/p>\n<ul>\n<li>\u5bfb\u627e\u9519\u8bef\u7801\u3001\u8d85\u65f6\u4fe1\u606f\u6216\u6587\u4ef6\u6743\u9650\u76f8\u5173\u62a5\u9519\u3002<\/li>\n<li>\u5bf9\u6bd4\u6210\u529f\u5907\u4efd\u4e0e\u5931\u8d25\u5907\u4efd\u7684\u5dee\u5f02\u70b9\uff08\u65f6\u95f4\u70b9\u3001\u6587\u4ef6\u5927\u5c0f\u3001\u4efb\u52a1\u53c2\u6570\uff09\u3002<\/li>\n<\/ul>\n<h3>2. \u76d1\u63a7\u4e0e\u5b9e\u65f6\u89c2\u6d4b<\/h3>\n<p>\u4f7f\u7528 top\u3001iotop\u3001iftop\u3001vmstat\u3001dstat \u7b49\u5de5\u5177\u89c2\u5bdf CPU\u3001IO \u548c\u7f51\u7edc\u5b9e\u65f6\u6307\u6807\u3002<\/p>\n<ul>\n<li>\u5f53 iowait\/tx\/rx \u9ad8\u65f6\uff0c\u8bf4\u660e\u53ef\u80fd\u4e3a\u5b58\u50a8\u6216\u7f51\u7edc\u9650\u901f\u3002<\/li>\n<li>\u7ed3\u5408\u4e91\u5546\u63a7\u5236\u53f0\u67e5\u770b\u78c1\u76d8\u6027\u80fd\u6307\u6807\u548c\u7f51\u7edc\u94fe\u8def\u72b6\u6001\u3002<\/li>\n<\/ul>\n<h3>3. \u5c0f\u89c4\u6a21\u590d\u73b0\u6d4b\u8bd5<\/h3>\n<p>\u5728\u975e\u751f\u4ea7\u73af\u5883\u6216\u6309\u76ee\u5f55\u5206\u6279\u5907\u4efd\uff0c\u5b9a\u4f4d\u662f\u5426\u4e3a\u7279\u5b9a\u6587\u4ef6\u6216\u76ee\u5f55\u5bfc\u81f4\u5931\u8d25\u3002<\/p>\n<h3>4. \u7f51\u7edc\u8bca\u65ad<\/h3>\n<p>\u4f7f\u7528 ping\u3001mtr\u3001traceroute\u3001tcptraceroute\u3001ss \u6216 netstat \u68c0\u67e5\u8fde\u901a\u6027\u4e0e\u7aef\u53e3\u72b6\u6001\uff0c\u5fc5\u8981\u65f6\u6293\u5305\uff08tcpdump\uff09\u5206\u6790\u534f\u8bae\u5c42\u9762\u95ee\u9898\u3002<\/p>\n<h3>5. \u68c0\u67e5\u7cfb\u7edf\u4e0e\u5e94\u7528\u65e5\u5fd7<\/h3>\n<p>\u67e5\u770b \/var\/log\/messages\u3001syslog\u3001dmesg\uff0c\u6709\u65e0 I\/O \u9519\u8bef\u3001\u5185\u6838 OOM \u6216\u6587\u4ef6\u7cfb\u7edf\u9519\u8bef\u8bb0\u5f55\u3002<\/p>\n<h2>\u5feb\u901f\u4fee\u590d\u7b56\u7565\uff08\u6309\u573a\u666f\u7ed9\u51fa\u53ef\u6267\u884c\u6b65\u9aa4\uff09<\/h2>\n<h3>\u7f51\u7edc\u4e0e\u5e26\u5bbd\u95ee\u9898<\/h3>\n<ul>\n<li>\u4e34\u65f6\u964d\u4f4e\u5e76\u884c\u5ea6\u6216\u9650\u901f\uff08rsync &#8211;bwlimit\uff09\u4ee5\u907f\u514d\u89e6\u53d1\u5e26\u5bbd\u9650\u5236\u3002<\/li>\n<li>\u5207\u6362\u5907\u4efd\u7a97\u53e3\u81f3\u591c\u95f4\u4f4e\u5cf0\uff0c\u6216\u91c7\u7528\u589e\u91cf\/\u5dee\u5f02\u5907\u4efd\u51cf\u5c11\u4f20\u8f93\u91cf\u3002<\/li>\n<li>\u4e0e\u4e91\u5546\u786e\u8ba4\u662f\u5426\u5b58\u5728\u7aef\u53e3\u6216IP\u88ab\u5c01\uff0c\u5fc5\u8981\u65f6\u8c03\u6574\u7ebf\u8def\u6216\u4f7f\u7528 VPN\/\u4e13\u7ebf\u3002<\/li>\n<\/ul>\n<h3>\u5b58\u50a8\u4e0eIO\u74f6\u9888<\/h3>\n<ul>\n<li>\u6682\u505c\u975e\u5fc5\u8981 IO \u5bc6\u96c6\u578b\u4efb\u52a1\uff0c\u5206\u6279\u6b21\u6267\u884c\u5907\u4efd\u3002<\/li>\n<li>\u5bf9\u6587\u4ef6\u7cfb\u7edf\u6267\u884c fsck\uff08\u5728\u7ef4\u62a4\u7a97\u53e3\uff09\u5e76\u4fee\u590d\u9519\u8bef\u3002<\/li>\n<li>\u542f\u7528\u4e91\u76d8\u5feb\u7167\u524d\u5148\u51b7\u9759\u6001\u5316\u6570\u636e\u6216\u4f7f\u7528 LVM 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