{"id":209296,"date":"2025-09-30T08:00:04","date_gmt":"2025-09-30T00:00:04","guid":{"rendered":"https:\/\/www.server.hk\/blog\/209296\/"},"modified":"2025-09-30T08:00:06","modified_gmt":"2025-09-30T00:00:06","slug":"vps-239","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/209296\/","title":{"rendered":"\u9999\u6e2fVPS\u5fc5\u5b66\uff1a\u7528Logrotate\u81ea\u52a8\u5316\u7ba1\u7406\u65e5\u5fd7\u8f6e\u8f6c"},"content":{"rendered":"<p>\u5728\u9999\u6e2fVPS\u6216\u5176\u4ed6\u4e91\u4e3b\u673a\u4e0a\u90e8\u7f72\u7f51\u7ad9\u4e0e\u5e94\u7528\u65f6\uff0c\u65e5\u5fd7\u6587\u4ef6\u4f1a\u968f\u7740\u8bbf\u95ee\u91cf\u4e0e\u670d\u52a1\u6d3b\u52a8\u5feb\u901f\u589e\u957f\u3002\u5982\u679c\u4e0d\u53ca\u65f6\u8f6e\u8f6c\u4e0e\u538b\u7f29\u65e5\u5fd7\uff0c\u4e0d\u4ec5\u4f1a\u5360\u6ee1\u78c1\u76d8\uff0c\u8fd8\u53ef\u80fd\u5f71\u54cd\u670d\u52a1\u7a33\u5b9a\u6027\u4e0e\u5b89\u5168\u5ba1\u8ba1\u3002\u672c\u6587\u9762\u5411\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\uff0c\u6df1\u5165\u8bb2\u89e3\u5982\u4f55\u4f7f\u7528 <strong>logrotate<\/strong> \u5728\u9999\u6e2fVPS \u73af\u5883\u4e2d\u5b9e\u73b0\u81ea\u52a8\u5316\u65e5\u5fd7\u8f6e\u8f6c\uff0c\u5e76\u7ed9\u51fa\u5b9e\u6218\u914d\u7f6e\u3001\u5e38\u89c1\u573a\u666f\u4e0e\u9009\u8d2d\u5efa\u8bae\u3002\u6587\u7ae0\u540c\u65f6\u517c\u987e\u6df7\u5408\u90e8\u7f72\u573a\u666f\uff08\u4f8b\u5982\u540c\u65f6\u4f7f\u7528\u7f8e\u56fdVPS \u6216 \u81ea\u5efa\u9999\u6e2f\u670d\u52a1\u5668 \u4e0e\u7f8e\u56fd\u670d\u52a1\u5668 \u505a\u5bb9\u707e\/\u5206\u5e03\u5f0f\u90e8\u7f72\uff09\u7684\u8fd0\u7ef4\u9700\u6c42\u3002<\/p>\n<h2>\u539f\u7406\u4e0e\u5de5\u4f5c\u673a\u5236<\/h2>\n<p>logrotate \u662f Linux \u73af\u5883\u4e0b\u6700\u5e38\u7528\u7684\u65e5\u5fd7\u7ba1\u7406\u5de5\u5177\u4e4b\u4e00\uff0c\u5176\u6838\u5fc3\u601d\u60f3\u662f\u6309\u65f6\u95f4\u6216\u5927\u5c0f\u5c06\u6d3b\u8dc3\u65e5\u5fd7\u91cd\u547d\u540d\u3001\u538b\u7f29\u3001\u5e76\u53ef\u6267\u884c\u81ea\u5b9a\u4e49\u811a\u672c\uff08\u5982 signal \u91cd\u65b0\u6253\u5f00\u65e5\u5fd7\u6587\u4ef6\uff09\u3002\u4e3b\u8981\u7ec4\u4ef6\u4e0e\u6d41\u7a0b\u5305\u62ec\uff1a<\/p>\n<ul>\n<li>\u4e3b\u914d\u7f6e\u6587\u4ef6\uff1a\/etc\/logrotate.conf\uff0c\u5305\u542b\u5168\u5c40\u9ed8\u8ba4\u9009\u9879\u3002<\/li>\n<li>\u89c4\u5219\u76ee\u5f55\uff1a\/etc\/logrotate.d\/\uff0c\u9488\u5bf9\u6bcf\u4e2a\u670d\u52a1\u5355\u72ec\u914d\u7f6e\uff08\u5982 nginx\u3001mysql\u3001docker\uff09\u3002<\/li>\n<li>\u8f6e\u8f6c\u89e6\u53d1\uff1a\u901a\u8fc7\u7cfb\u7edf cron\uff08\u901a\u5e38 \/etc\/cron.daily\/logrotate\uff09\u5b9a\u65f6\u8c03\u7528\uff0c\u4e5f\u53ef\u7531 systemd \u5b9a\u65f6\u4efb\u52a1\u89e6\u53d1\u3002<\/li>\n<li>\u5173\u952e\u6307\u4ee4\uff1arotate\u3001daily\/weekly\/monthly\u3001size\u3001compress\u3001delaycompress\u3001copytruncate\u3001postrotate\u3001prerotate \u7b49\u3002<\/li>\n<\/ul>\n<p>\u5f53 logrotate \u8fd0\u884c\u65f6\uff0c\u4f1a\u8bfb\u53d6\u914d\u7f6e\uff0c\u5224\u65ad\u54ea\u4e9b\u65e5\u5fd7\u6ee1\u8db3\u8f6e\u8f6c\u6761\u4ef6\uff08\u65f6\u95f4\u6216\u5927\u5c0f\uff09\uff0c\u7136\u540e\u6309\u89c4\u5219\u6267\u884c\u91cd\u547d\u540d\u6216\u590d\u5236\u622a\u65ad\u64cd\u4f5c\uff0c\u968f\u540e\u53ef\u8c03\u7528 postrotate \u811a\u672c\u901a\u77e5\u670d\u52a1\u91cd\u65b0\u6253\u5f00\u65b0\u65e5\u5fd7\u63cf\u8ff0\u7b26\uff08\u4f8b\u5982\u5bf9 nginx \u4f7f\u7528 kill -USR1\uff09\u3002<\/p>\n<h3>\u5e38\u7528\u914d\u7f6e\u8be6\u89e3<\/h3>\n<ul>\n<li><strong>rotate N<\/strong>\uff1a\u4fdd\u7559 N \u4e2a\u5386\u53f2\u65e5\u5fd7\u3002<\/li>\n<li><strong>daily\/weekly\/monthly<\/strong>\uff1a\u6309\u5929\/\u5468\/\u6708\u8f6e\u8f6c\u3002<\/li>\n<li><strong>size 100M<\/strong>\uff1a\u5f53\u65e5\u5fd7\u6587\u4ef6\u8d85\u8fc7 100MB \u65f6\u89e6\u53d1\u8f6e\u8f6c\uff08\u53ef\u4e0e time \u89c4\u5219\u7ed3\u5408\uff09\u3002<\/li>\n<li><strong>compress \/ delaycompress<\/strong>\uff1a\u538b\u7f29\u65e7\u65e5\u5fd7\uff0cdelaycompress \u8868\u793a\u5ef6\u8fdf\u538b\u7f29\u6700\u8fd1\u8f6e\u8f6c\u7684\u65e5\u5fd7\u3002<\/li>\n<li><strong>copytruncate<\/strong>\uff1a\u5728\u65e0\u6cd5\u91cd\u542f\u670d\u52a1\u6216\u65e0\u6cd5\u53d1\u9001\u4fe1\u53f7\u7684\u60c5\u51b5\u4e0b\uff0c\u5148\u590d\u5236\u518d\u622a\u65ad\u539f\u6587\u4ef6\uff08\u5bf9\u77ed\u671f\u53ef\u63a5\u53d7\u4e22\u6570\u636e\u7684\u5c0f\u6d41\u91cf\u670d\u52a1\u53ef\u7528\uff09\u3002<\/li>\n<li><strong>postrotate &#8230; endscript<\/strong>\uff1a\u8f6e\u8f6c\u540e\u6267\u884c\u811a\u672c\uff0c\u4f8b\u5982\u5411 nginx \u53d1\u9001 USR1\uff0c\u6216\u89e6\u53d1 rsyslog \u91cd\u8f7d\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\u573a\u666f\u4e0e\u793a\u4f8b\u914d\u7f6e<\/h2>\n<p>\u4e0b\u9762\u7ed9\u51fa\u51e0\u79cd\u5178\u578b\u670d\u52a1\u7684\u914d\u7f6e\u793a\u4f8b\uff0c\u9002\u7528\u4e8e\u9999\u6e2fVPS \u6216\u5176\u4ed6\u533a\u57df\u7684 VPS\uff08\u5982\u7f8e\u56fdVPS\uff09\u4e0a\u8fd0\u884c\u7684\u670d\u52a1\u3002<\/p>\n<h3>Nginx \u65e5\u5fd7\uff08\u6309\u5927\u5c0f\u8f6e\u8f6c\u5e76\u538b\u7f29\uff09<\/h3>\n<p>\u6587\u4ef6 \/etc\/logrotate.d\/nginx \u793a\u4f8b\uff1a<\/p>\n<p><code>\/var\/log\/nginx\/*.log {<br \/>\n    size 100M<br \/>\n    rotate 7<br \/>\n    missingok<br \/>\n    notifempty<br \/>\n    compress<br \/>\n    delaycompress<br \/>\n    sharedscripts<br \/>\n    postrotate<br \/>\n        [ -f \/var\/run\/nginx.pid ] &amp;&amp; kill -USR1 `cat \/var\/run\/nginx.pid` 2&gt;\/dev\/null || true<br \/>\n    endscript<br \/>\n}<\/code><\/p>\n<p>\u8bf4\u660e\uff1a\u4f7f\u7528 size \u53ef\u5728\u7a81\u53d1\u6d41\u91cf\u4e0b\u53ca\u65f6\u8f6e\u8f6c\uff1bsharedscripts \u4fdd\u8bc1 postrotate \u53ea\u6267\u884c\u4e00\u6b21\uff1bdelaycompress \u53ef\u786e\u4fdd\u5f53\u524d\u6700\u65b0\u8f6e\u8f6c\u6587\u4ef6\u4e0d\u7acb\u5373\u88ab\u538b\u7f29\uff0c\u65b9\u4fbf\u5b9e\u65f6\u5206\u6790\u3002<\/p>\n<h3>Systemd \/ journald \u4e0e Docker \u65e5\u5fd7<\/h3>\n<p>logrotate \u5bf9\u4f20\u7edf\u6587\u672c\u65e5\u5fd7\u6700\u6709\u6548\uff0c\u5bf9\u4e8e systemd-journald \u5efa\u8bae\u4f7f\u7528 journalctl &#8211;vacuum-time \/ &#8211;vacuum-size \u7ba1\u7406\uff0c\u6216\u4f7f\u7528 rsyslog \u5c06\u65e5\u5fd7\u8f6c\u53d1\u4e3a\u6587\u672c\u6587\u4ef6\u518d\u7531 logrotate \u7ba1\u7406\u3002Docker \u5bb9\u5668\u9ed8\u8ba4\u4f7f\u7528 json-file \u9a71\u52a8\uff0c\u9700\u5728 \/etc\/docker\/daemon.json \u4e2d\u914d\u7f6e log-opts\uff08max-size\u3001max-file\uff09\uff0c\u6216\u628a\u5bb9\u5668\u65e5\u5fd7\u6302\u8f7d\u5230\u4e3b\u673a\u5e76\u4ea4\u7531 logrotate \u8f6e\u8f6c\u3002<\/p>\n<h3>\u90ae\u4ef6\u4e0e\u5e94\u7528\u65e5\u5fd7\uff08\u6309\u65f6\u95f4\u8f6e\u8f6c\u5e76\u4e0a\u4f20\u5907\u4efd\uff09<\/h3>\n<p>\u53ef\u5728 postrotate \u4e2d\u52a0\u5165\u4e0a\u4f20\u811a\u672c\uff0c\u5c06\u8f6e\u8f6c\u540e\u7684\u65e5\u5fd7\u5907\u4efd\u5230\u8fdc\u7a0b\u5b58\u50a8\uff08\u5982 S3 \u6216\u516c\u53f8\u5185\u90e8\u5bf9\u8c61\u5b58\u50a8\uff09\u3002\u793a\u4f8b\uff1a<\/p>\n<p><code>postrotate<br \/>\n    \/usr\/local\/bin\/upload_logs.sh \/var\/log\/myapp\/myapp.log.1.gz<br \/>\nendscript<\/code><\/p>\n<p>\u6ce8\u610f\uff1a\u4e0a\u4f20\u811a\u672c\u9700\u8003\u8651\u5e76\u53d1\u4e0e\u91cd\u8bd5\u673a\u5236\uff0c\u4ee5\u53ca\u65e5\u5fd7\u6743\u9650\u4e0e\u52a0\u5bc6\uff08\u654f\u611f\u65e5\u5fd7\uff09\u3002<\/p>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\u4e0e\u5e38\u89c1\u8bef\u533a<\/h2>\n<p>\u4f7f\u7528 logrotate \u7684\u4f18\u52bf\uff1a<\/p>\n<ul>\n<li><strong>\u8f7b\u91cf\u4e14\u7a33\u5b9a<\/strong>\uff1a\u65e0\u9700\u989d\u5916\u5b88\u62a4\u8fdb\u7a0b\uff0c\u4f9d\u8d56\u7cfb\u7edf\u5b9a\u65f6\u4efb\u52a1\u5373\u53ef\u3002<\/li>\n<li><strong>\u7075\u6d3b\u53ef\u6269\u5c55<\/strong>\uff1a\u901a\u8fc7 postrotate \u53ef\u4ee5\u4e0e\u76d1\u63a7\u3001\u5907\u4efd\u6d41\u7a0b\u96c6\u6210\u3002<\/li>\n<li><strong>\u9002\u914d\u5e7f\u6cdb<\/strong>\uff1a\u652f\u6301\u5927\u591a\u6570\u4f20\u7edf\u5b88\u62a4\u8fdb\u7a0b\u65e5\u5fd7\uff0c\u4f8b\u5982 nginx\u3001mysql\u3001rsyslog\u3002<\/li>\n<\/ul>\n<p>\u4e0e\u5176\u4ed6\u65b9\u6848\u5bf9\u6bd4\uff1a<\/p>\n<ul>\n<li>logrotate vs systemd-journald\uff1ajournald \u66f4\u9002\u5408\u5185\u5b58\u548c\u7ed3\u6784\u5316\u65e5\u5fd7\uff0c\u4f46\u4e0d\u9002\u5408\u957f\u671f\u5f52\u6863\uff1b\u7ed3\u5408\u4e24\u8005\u53ef\u5b9e\u73b0\u5b9e\u65f6\u4e0e\u5f52\u6863\u5206\u79bb\u3002<\/li>\n<li>logrotate vs \u96c6\u4e2d\u5f0f\u65e5\u5fd7\u7cfb\u7edf\uff08ELK\/EFK\u3001Graylog\uff09\uff1a\u96c6\u4e2d\u5f0f\u66f4\u9002\u5408\u590d\u6742\u68c0\u7d22\u4e0e\u544a\u8b66\uff0c\u4f46\u6210\u672c\u4e0e\u590d\u6742\u5ea6\u9ad8\u3002\u5efa\u8bae\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668 \u67b6\u6784\u4e2d\u5c06 logrotate \u4f5c\u4e3a\u77ed\u671f\u78c1\u76d8\u7ba1\u7406\u65b9\u6848\uff0c\u957f\u5468\u671f\u5206\u6790\u4ea4\u7531\u96c6\u4e2d\u7cfb\u7edf\u3002<\/li>\n<\/ul>\n<p>\u5e38\u89c1\u8bef\u533a\uff1a<\/p>\n<ul>\n<li>\u8bef\u7528 copytruncate\uff1a\u5bf9\u4e8e\u9ad8\u5e76\u53d1\u5199\u5165\u670d\u52a1\uff0ccopytruncate \u53ef\u80fd\u4e22\u5931\u90e8\u5206\u65e5\u5fd7\uff0c\u4f18\u5148\u8003\u8651 signal \u91cd\u5f00\u6216\u4f7f\u7528 docker log-opts\u3002<\/li>\n<li>\u5ffd\u89c6\u6587\u4ef6\u6743\u9650\u4e0e SELinux\uff1a\u8f6e\u8f6c\u540e\u6587\u4ef6\u6743\u9650\u4e0e\u4e0a\u4e0b\u6587\u53ef\u80fd\u53d8\u5316\uff0c\u9700\u6821\u9a8c\u5e76\u5728 postrotate \u4e2d\u4fee\u6b63\uff08\u4f8b\u5982 chown\/chcon\uff09\u3002<\/li>\n<\/ul>\n<h2>\u9009\u8d2d\u4e0e\u914d\u7f6e\u5efa\u8bae\uff08\u9488\u5bf9\u9999\u6e2fVPS \u4e0e\u6df7\u5408\u4e91\u573a\u666f\uff09<\/h2>\n<p>\u5728\u9009\u62e9 VPS\uff08\u65e0\u8bba\u662f\u9999\u6e2fVPS\u3001\u7f8e\u56fdVPS \u8fd8\u662f\u6df7\u5408\u90e8\u7f72\u4f7f\u7528\u9999\u6e2f\u670d\u52a1\u5668 \u4e0e\u7f8e\u56fd\u670d\u52a1\u5668\uff09\u65f6\uff0c\u5e94\u6839\u636e\u65e5\u5fd7\u751f\u6210\u901f\u7387\u4e0e\u5206\u6790\u9700\u6c42\u8003\u8651\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/p>\n<ul>\n<li>\u78c1\u76d8\u7c7b\u578b\u4e0e IOPS\uff1a\u65e5\u5fd7\u9891\u7e41\u5199\u5165\u5efa\u8bae NVMe \u6216 SSD\uff0c\u4f4e\u5ef6\u8fdf\u5199\u5165\u53ef\u51cf\u5c11\u65e5\u5fd7\u843d\u76d8\u963b\u585e\u3002<\/li>\n<li>\u78c1\u76d8\u5927\u5c0f\u9884\u7559\uff1a\u6309\u5e73\u5747\u6bcf\u65e5\u65e5\u5fd7\u751f\u6210\u91cf\u4f30\u7b97\u4fdd\u7559\u5929\u6570\u4e0e\u538b\u7f29\u6bd4\uff0c\u9884\u7559\u81f3\u5c11 2-3 \u500d\u4f59\u91cf\u4f5c\u4e3a\u7f13\u51b2\u3002<\/li>\n<li>CPU \u4e0e\u5185\u5b58\uff1a\u82e5\u5728 VPS \u4e0a\u6267\u884c\u538b\u7f29\uff08gzip\/bzip2\uff09\u6216\u8fd0\u884c\u96c6\u4e2d\u5f0f\u65e5\u5fd7\u4ee3\u7406\uff08Filebeat\/Fluentd\uff09\uff0c\u9700\u8003\u8651 CPU \u4e0e\u5185\u5b58\u8d44\u6e90\u3002<\/li>\n<li>\u7f51\u7edc\u5e26\u5bbd\uff1a\u82e5\u8ba1\u5212\u5c06\u65e5\u5fd7\u5f02\u5730\u5907\u4efd\u5230\u7f8e\u56fd\u670d\u52a1\u5668 \u6216 \u4e91\u5b58\u50a8\uff08\u5982 S3\uff09\u65f6\uff0c\u8bc4\u4f30\u4e0a\u4f20\u5e26\u5bbd\u4e0e\u8d39\u7528\u3002<\/li>\n<li>\u5907\u4efd\u4e0e\u6062\u590d\u7b56\u7565\uff1a\u5b9a\u671f\u6d4b\u8bd5\u65e5\u5fd7\u6062\u590d\uff0c\u786e\u4fdd\u5ba1\u8ba1\u6216\u6545\u969c\u6392\u67e5\u65f6\u53ef\u7528\u3002<\/li>\n<\/ul>\n<p>\u793a\u4f8b\u89c4\u683c\u5efa\u8bae\uff1a<\/p>\n<ul>\n<li>\u4e2d\u5c0f\u7ad9\u70b9\uff08\u8bbf\u95ee\u91cf\u51e0\u5341\u4e07\/\u6708\uff09\uff1a1 vCPU\u30011-2GB \u5185\u5b58\u300150-100GB SSD \u5373\u53ef\uff1b\u914d\u5408 logrotate daily + size \u7b56\u7565\u3002<\/li>\n<li>\u9ad8\u6d41\u91cf\u7ad9\u70b9\u6216 API \u670d\u52a1\uff1a2+ vCPU\u30014GB+ \u5185\u5b58\u3001NVMe \u53ca\u72ec\u7acb\u5907\u4efd\u94fe\u8def\uff1b\u8003\u8651\u5c06\u65e5\u5fd7\u5b9e\u65f6\u9001\u5230\u96c6\u4e2d\u65e5\u5fd7\u5e73\u53f0\uff0c\u5e76\u5728 VPS \u505a\u77ed\u671f\u8f6e\u8f6c\u3002<\/li>\n<\/ul>\n<h2>\u6d4b\u8bd5\u3001\u76d1\u63a7\u4e0e\u8fd0\u7ef4\u8981\u70b9<\/h2>\n<p>\u90e8\u7f72\u540e\u8bf7\u52a1\u5fc5\u8fdb\u884c\u5145\u5206\u6d4b\u8bd5\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528 logrotate -d \/etc\/logrotate.d\/yourconf \u6765\u8fdb\u884c\u201c\u5e72\u8fd0\u884c\u201d\u6d4b\u8bd5\uff0c\u68c0\u67e5\u5c06\u8981\u8fdb\u884c\u7684\u64cd\u4f5c\u4f46\u4e0d\u5b9e\u9645\u6267\u884c\u3002<\/li>\n<li>\u4f7f\u7528 logrotate -f \u5f3a\u5236\u8f6e\u8f6c\u4ee5\u9a8c\u8bc1 postrotate \u811a\u672c\u548c\u6743\u9650\u662f\u5426\u6b63\u786e\u3002<\/li>\n<li>\u76d1\u63a7\u78c1\u76d8\u4f7f\u7528\u7387\u4e0e inode\uff0c\u8bbe\u7f6e\u544a\u8b66\u9608\u503c\uff08\u4f8b\u5982 80%\/90%\uff09\u3002<\/li>\n<li>\u4e3a\u8f6e\u8f6c\u5931\u8d25\u573a\u666f\u8bbe\u7f6e\u544a\u8b66\uff08\u5982 postrotate 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