{"id":208656,"date":"2025-09-29T20:12:53","date_gmt":"2025-09-29T12:12:53","guid":{"rendered":"https:\/\/www.server.hk\/blog\/208656\/"},"modified":"2025-09-29T20:12:54","modified_gmt":"2025-09-29T12:12:54","slug":"vps-85","status":"publish","type":"post","link":"https:\/\/server.hk\/cnblog\/208656\/","title":{"rendered":"\u9999\u6e2fVPS Cron\u5b9e\u6218\uff1a\u4e00\u952e\u914d\u7f6e\u5b9a\u65f6\u81ea\u52a8\u5907\u4efd"},"content":{"rendered":"<p>\u5728\u65e5\u5e38\u8fd0\u7ef4\u4e2d\uff0c\u5b9a\u65f6\u81ea\u52a8\u5907\u4efd\u662f\u4fdd\u969c\u7f51\u7ad9\u4e0e\u670d\u52a1\u7a33\u5b9a\u6027\u7684\u57fa\u7840\u5de5\u4f5c\u3002\u5bf9\u4e8e\u4f7f\u7528\u9999\u6e2fVPS\u7684\u7ad9\u957f\u3001\u4f01\u4e1a\u7528\u6237\u4e0e\u5f00\u53d1\u8005\u800c\u8a00\uff0c\u901a\u8fc7 Linux \u7684 cron \u5b9a\u65f6\u4efb\u52a1\u7ed3\u5408\u811a\u672c\u4e0e\u5b89\u5168\u4f20\u8f93\u624b\u6bb5\uff0c\u53ef\u4ee5\u5b9e\u73b0\u4e00\u952e\u914d\u7f6e\u7684\u81ea\u52a8\u5907\u4efd\u65b9\u6848\u3002\u672c\u6587\u5c06\u6df1\u5165\u8bb2\u89e3\u539f\u7406\u3001\u5178\u578b\u5e94\u7528\u573a\u666f\u3001\u8be6\u7ec6\u5b9e\u6218\u6b65\u9aa4\uff08\u542b\u811a\u672c\u793a\u4f8b\u4e0e crontab \u914d\u7f6e\uff09\u3001\u4e0e\u5176\u4ed6\u65b9\u6848\u7684\u4f18\u52bf\u5bf9\u6bd4\uff0c\u4ee5\u53ca\u9009\u8d2d\u5efa\u8bae\uff0c\u5e2e\u52a9\u4f60\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fdVPS \/ \u7f8e\u56fd\u670d\u52a1\u5668\u73af\u5883\u4e2d\u5efa\u7acb\u53ef\u9760\u7684\u5907\u4efd\u4f53\u7cfb\u3002<\/p>\n<h2>\u5907\u4efd\u539f\u7406\u6982\u8ff0<\/h2>\n<p>\u5b9a\u65f6\u5907\u4efd\u7684\u6838\u5fc3\u662f\u4e09\u4e2a\u8981\u7d20\uff1a\u89e6\u53d1\u5668\uff08\u5b9a\u65f6\u5668\uff09\u3001\u6570\u636e\u91c7\u96c6\uff08\u5907\u4efd\u811a\u672c\uff09\u4e0e\u5b89\u5168\u4f20\u8f93\/\u5b58\u50a8\u3002Linux \u7cfb\u7edf\u4e2d\u5e38\u7528\u7684\u89e6\u53d1\u5668\u662f <strong>cron<\/strong>\uff0c\u5b83\u80fd\u6309\u5206\u949f\/\u5c0f\u65f6\/\u65e5\/\u6708\/\u5468\u7ea7\u522b\u89e6\u53d1\u4efb\u52a1\u3002\u6570\u636e\u91c7\u96c6\u53ef\u4ee5\u91c7\u7528 <code>tar<\/code>\u3001<code>rsync<\/code>\u3001\u6570\u636e\u5e93\u5bfc\u51fa\uff08\u5982 <code>mysqldump<\/code>\uff09\u7b49\u5de5\u5177\u3002\u4f20\u8f93\u65b9\u9762\u901a\u5e38\u901a\u8fc7 SSH\uff08scp\/rsync over ssh\uff09\u5c06\u5907\u4efd\u6587\u4ef6\u63a8\u9001\u5230\u5f02\u5730\u5b58\u50a8\uff0c\u6216\u4e0a\u4f20\u5230\u5bf9\u8c61\u5b58\u50a8\uff08\u5982 S3 \u517c\u5bb9\u670d\u52a1\uff09\u3002<\/p>\n<p>\u5728\u9999\u6e2fVPS \u4e0a\u6267\u884c\u5907\u4efd\uff0c\u6709\u5229\u4e8e\u964d\u4f4e\u5ef6\u8fdf\u5e76\u63d0\u9ad8\u4e0e\u672c\u5730\uff08\u4e9a\u6d32\uff09\u7528\u6237\u7684\u6570\u636e\u540c\u6b65\u6548\u7387\uff1b\u82e5\u91c7\u7528\u7f8e\u56fdVPS \u505a\u5f02\u5730\u5907\u4efd\uff0c\u5219\u53ef\u4ee5\u63d0\u9ad8\u707e\u96be\u6062\u590d\u7684\u5730\u57df\u5197\u4f59\uff0c\u517c\u987e\u5408\u89c4\u4e0e\u5bb9\u707e\u9700\u6c42\u3002<\/p>\n<h2>\u5178\u578b\u5e94\u7528\u573a\u666f<\/h2>\n<ul>\n<li>\u5c0f\u578b\u7f51\u7ad9\u7684\u6587\u4ef6\u4e0e\u6570\u636e\u5e93\u6bcf\u65e5\u81ea\u52a8\u5feb\u7167\uff08\u9002\u7528\u4e8e\u5355\u673a\u67b6\u6784\u7684 WordPress\u3001\u9759\u6001\u7ad9\u70b9\u7b49\uff09\u3002<\/li>\n<li>\u4e1a\u52a1\u6570\u636e\u5e93\u7684\u5b9a\u671f\u903b\u8f91\u5907\u4efd\u5e76\u63a8\u9001\u81f3\u5f02\u5730\uff08\u4f8b\u5982\u9999\u6e2f\u670d\u52a1\u5668\u540c\u6b65\u5230\u7f8e\u56fd\u670d\u52a1\u5668\u4ee5\u5b9e\u73b0\u8de8\u533a\u57df\u5197\u4f59\uff09\u3002<\/li>\n<li>\u589e\u91cf\u5907\u4efd\u4e0e\u5dee\u5f02\u540c\u6b65\uff0c\u964d\u4f4e\u5e26\u5bbd\u4e0e\u5b58\u50a8\u6210\u672c\uff0c\u540c\u65f6\u4fdd\u8bc1\u5feb\u901f\u6062\u590d\u80fd\u529b\u3002<\/li>\n<li>\u591a VPS \u73af\u5883\u4e0b\u96c6\u4e2d\u5907\u4efd\uff1a\u4e00\u53f0\u9999\u6e2fVPS \u4f5c\u4e3a\u4e3b\u8282\u70b9\uff0c\u5b9a\u65f6\u62c9\u53d6\u5176\u5b83\u8282\u70b9\u6570\u636e\u6216\u5c06\u672c\u5730\u6570\u636e\u63a8\u9001\u81f3\u96c6\u4e2d\u5907\u4efd\u4ed3\u5e93\u3002<\/li>\n<\/ul>\n<h2>\u5b9e\u6218\uff1a\u4e00\u952e\u914d\u7f6e\u5b9a\u65f6\u81ea\u52a8\u5907\u4efd\uff08\u8be6\u7ec6\u6b65\u9aa4\u4e0e\u811a\u672c\uff09<\/h2>\n<h3>\u51c6\u5907\u5de5\u4f5c\u4e0e\u5b89\u5168\u8003\u8651<\/h3>\n<p>\u5728\u81ea\u52a8\u5316\u5907\u4efd\u524d\uff0c\u5fc5\u987b\u51c6\u5907\u5e76\u786e\u8ba4\u4ee5\u4e0b\u9879\uff1a<\/p>\n<ul>\n<li>\u5f00\u542f\u5e76\u786e\u8ba4 cron \u670d\u52a1\u6b63\u5728\u8fd0\u884c\uff1a<code>systemctl status cron<\/code> \u6216 <code>crond<\/code>\uff08\u53d6\u51b3\u4e8e\u53d1\u884c\u7248\uff09\u3002<\/li>\n<li>\u4f7f\u7528 SSH \u5bc6\u94a5\u8fdb\u884c\u65e0\u5bc6\u7801\u767b\u5f55\uff0c\u907f\u514d\u5728\u811a\u672c\u4e2d\u660e\u6587\u5bc6\u7801\u3002\u751f\u6210\u547d\u4ee4\uff1a<code>ssh-keygen -t rsa -b 4096 -C \"backup@yourdomain\"<\/code>\uff0c\u5c06\u516c\u94a5\u590d\u5236\u5230\u8fdc\u7a0b\u670d\u52a1\u5668\u7684 <code>~\/.ssh\/authorized_keys<\/code>\u3002<\/li>\n<li>\u5728\u5907\u4efd\u5e10\u53f7\u4e0a\u9650\u5236\u6743\u9650\uff08\u4f7f\u7528\u4e13\u7528\u5907\u4efd\u7528\u6237\uff09\uff0c\u5e76\u8bbe\u7f6e\u5408\u9002\u7684 umask \u4e0e\u76ee\u5f55\u6743\u9650\u4ee5\u4fdd\u62a4\u5907\u4efd\u6587\u4ef6\u3002<\/li>\n<li>\u542f\u7528\u65e5\u5fd7\u8bb0\u5f55\u4e0e\u544a\u8b66\uff1a\u5907\u4efd\u811a\u672c\u5e94\u5c06 stdout\/stderr \u5199\u5165\u65e5\u5fd7\uff0c\u5e76\u5728\u5931\u8d25\u65f6\u901a\u8fc7\u90ae\u4ef6\u6216\u7b2c\u4e09\u65b9\u901a\u77e5\uff08\u5982\u4f01\u4e1a\u5fae\u4fe1\/Slack\uff09\u544a\u8b66\u3002<\/li>\n<\/ul>\n<h3>\u6587\u4ef6\u4e0e\u6570\u636e\u5e93\u5907\u4efd\u811a\u672c\u793a\u4f8b<\/h3>\n<p>\u4e0b\u9762\u7ed9\u51fa\u4e00\u4e2a\u7ec4\u5408\u793a\u4f8b\uff1a\u5907\u4efd\u7f51\u7ad9\u76ee\u5f55\u3001\u5bfc\u51fa MySQL \u6570\u636e\u5e93\u5e76\u7528 tar \u6253\u5305\u538b\u7f29\uff0c\u7136\u540e\u901a\u8fc7 rsync \u63a8\u9001\u5230\u8fdc\u7a0b\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u3002<\/p>\n<p>\u793a\u4f8b\u811a\u672c \/usr\/local\/bin\/auto_backup.sh\uff1a<\/p>\n<p><code>#!\/bin\/bash<br \/>\nset -euo pipefail<\/p>\n<h1>\u914d\u7f6e\u9879<\/h1>\n<p>BACKUP_DIR=\"\/var\/backups\"<br \/>\nWWW_DIR=\"\/var\/www\/html\"<br \/>\nTIMESTAMP=$(date +%F_%H%M)<br \/>\nHOSTNAME=$(hostname -s)<br \/>\nREMOTE_USER=\"backup\"<br \/>\nREMOTE_HOST=\"backup.example.com\"<br \/>\nREMOTE_PATH=\"\/data\/backups\/${HOSTNAME}\"<br \/>\nMYSQL_USER=\"backupuser\"<br \/>\nMYSQL_PASS=\"YourStrongPass\"   # \u66f4\u63a8\u8350\u4f7f\u7528 ~\/.my.cnf \u6216\u73af\u5883\u53d8\u91cf\u5b58\u653e\u654f\u611f\u4fe1\u606f<\/p>\n<p>mkdir -p \"${BACKUP_DIR}\/${TIMESTAMP}\"<br \/>\ncd \"${BACKUP_DIR}\/${TIMESTAMP}\"<\/p>\n<h1>1. \u5bfc\u51fa\u6570\u636e\u5e93\uff08\u53ef\u591a\u4e2a\uff09<\/h1>\n<p>mysqldump -u${MYSQL_USER} -p${MYSQL_PASS} --single-transaction --quick --routines --events --all-databases &gt; db_all_${TIMESTAMP}.sql<\/p>\n<h1>2. \u5f52\u6863\u7f51\u7ad9\u6587\u4ef6\uff08\u6392\u9664\u7f13\u5b58\/\u4e34\u65f6\u76ee\u5f55\uff09<\/h1>\n<p>tar --exclude='cache' -czf www_${TIMESTAMP}.tar.gz -C \"${WWW_DIR}\" .<\/p>\n<h1>3. \u751f\u6210\u6821\u9a8c\u548c<\/h1>\n<p>sha256sum db_all_${TIMESTAMP}.sql www_${TIMESTAMP}.tar.gz &gt; checksums_${TIMESTAMP}.sha256<\/p>\n<h1>4. \u901a\u8fc7 rsync over ssh \u63a8\u9001\u5230\u8fdc\u7a0b\uff08\u589e\u91cf\u540c\u6b65\uff09<\/h1>\n<p>rsync -avz -e \"ssh -i \/root\/.ssh\/id_rsa -o StrictHostKeyChecking=no\" --remove-source-files \"${BACKUP_DIR}\/${TIMESTAMP}\/\" \"${REMOTE_USER}@${REMOTE_HOST}:${REMOTE_PATH}\/\"<\/p>\n<h1>5. \u6e05\u7406\u672c\u5730\u8d85\u8fc7\u4fdd\u7559\u671f\uff08\u4f8b\u5982\u4fdd\u75597\u5929\uff09<\/h1>\n<p>find \/var\/backups -maxdepth 1 -type d -mtime +7 -exec rm -rf {} ;<\/p>\n<p>echo \"Backup ${TIMESTAMP} completed\" &gt;&gt; \/var\/log\/backup.log<br \/>\n<\/code><\/p>\n<p>\u6ce8\u610f\u4e8b\u9879\uff1a<\/p>\n<ul>\n<li>\u751f\u4ea7\u73af\u5883\u5e94\u907f\u514d\u5728\u811a\u672c\u4e2d\u660e\u6587\u5bc6\u7801\uff0c\u53ef\u5c06 MySQL \u51ed\u636e\u653e\u5728 <code>~\/.my.cnf<\/code> \u5e76\u9650\u5b9a\u6743\u9650 600\u3002<\/li>\n<li>rsync \u53c2\u6570\u4e2d <code>--remove-source-files<\/code> \u53ef\u7528\u4e8e\u6e05\u7406\u672c\u5730\u4e34\u65f6\u6587\u4ef6\uff0c\u89c6\u9700\u6c42\u51b3\u5b9a\u662f\u5426\u4fdd\u7559\u672c\u5730\u526f\u672c\u3002<\/li>\n<li>\u4e3a\u4fdd\u8bc1\u4e00\u81f4\u6027\uff0c\u9488\u5bf9\u5927\u578b\u6570\u636e\u5e93\u53ef\u5148\u9501\u8868\u6216\u4f7f\u7528\u903b\u8f91\u5907\u4efd\u4e0e\u7269\u7406\u5feb\u7167\u7ed3\u5408\u7684\u7b56\u7565\uff08LVM \u5feb\u7167\u3001XtraBackup \u7b49\uff09\u3002<\/li>\n<\/ul>\n<h3>\u914d\u7f6e crontab \u5b9e\u73b0\u5b9a\u65f6\u89e6\u53d1<\/h3>\n<p>\u4f7f\u7528 crontab -e \u7f16\u8f91\u5907\u4efd\u4efb\u52a1\uff0c\u793a\u4f8b\uff1a\u6bcf\u5929\u51cc\u6668 2 \u70b9\u6267\u884c\u5907\u4efd\u5e76\u5c06\u65e5\u5fd7\u5199\u5165 \/var\/log\/backup_cron.log<\/p>\n<p><code>0 2 <em> <\/em> * \/usr\/local\/bin\/auto_backup.sh &gt;&gt; \/var\/log\/backup_cron.log 2&gt;&amp;1<\/code><\/p>\n<p>\u5982\u679c\u9700\u8981\u66f4\u7cbe\u7ec6\u7684\u8c03\u5ea6\uff08\u5982\u5468\u5168\u5907\u3001\u65e5\u589e\u91cf\uff09\uff0c\u53ef\u4ee5\u5206\u522b\u914d\u7f6e\u4e0d\u540c\u7684\u811a\u672c\u4e0e\u65f6\u95f4\uff1a<\/p>\n<ul>\n<li>\u5468\u65e5\uff1a\u5168\u91cf\u5907\u4efd\uff08dump + \u5b8c\u6574 tar\uff09\u3002<\/li>\n<li>\u6bcf\u65e5\uff1a\u589e\u91cf rsync\uff08\u53ea\u540c\u6b65\u53d8\u66f4\uff09\u3002<\/li>\n<li>\u6bcf\u5c0f\u65f6\uff1a\u5173\u952e\u65e5\u5fd7\u6587\u4ef6\u6eda\u52a8\u5e76\u5907\u4efd\u5143\u6570\u636e\u3002<\/li>\n<\/ul>\n<h3>\u589e\u91cf\u5907\u4efd\u4e0e\u7a7a\u95f4\u4f18\u5316<\/h3>\n<p>\u5bf9\u4e8e\u5927\u5bb9\u91cf\u6570\u636e\uff0c\u4f7f\u7528 rsync \u7684\u589e\u91cf\u540c\u6b65\u6216\u57fa\u4e8e rsnapshot \u7684\u94fe\u5f0f\u5feb\u7167\u80fd\u663e\u8457\u51cf\u5c11\u5b58\u50a8\u5360\u7528\u3002\u53e6\u4e00\u4e2a\u5e38\u7528\u7b56\u7565\u662f\u4f7f\u7528 borgbackup \u6216 restic\uff0c\u8fd9\u7c7b\u5de5\u5177\u652f\u6301\u53bb\u91cd\uff08deduplication\uff09\u3001\u52a0\u5bc6\u4e0e\u9ad8\u6548\u7684\u589e\u91cf\u5feb\u7167\uff0c\u975e\u5e38\u9002\u5408\u5728\u9999\u6e2fVPS \u4e0e\u7f8e\u56fdVPS \u4e4b\u95f4\u540c\u6b65\u65f6\u8282\u7701\u5e26\u5bbd\u3002<\/p>\n<h2>\u4f18\u52bf\u5bf9\u6bd4\uff1acron + \u811a\u672c vs \u7b2c\u4e09\u65b9\u5907\u4efd\u670d\u52a1<\/h2>\n<ul>\n<li><strong>\u53ef\u63a7\u6027\u9ad8<\/strong>\uff1a\u81ea\u5efa\u811a\u672c\u53ef\u4ee5\u7cbe\u786e\u63a7\u5236\u5907\u4efd\u5185\u5bb9\u3001\u4fdd\u7559\u7b56\u7565\u4e0e\u52a0\u5bc6\u65b9\u5f0f\uff0c\u9002\u5408\u5bf9\u5408\u89c4\u4e0e\u5b9a\u5236\u5316\u6709\u4e25\u683c\u8981\u6c42\u7684\u4f01\u4e1a\u7528\u6237\u3002<\/li>\n<li>\u6210\u672c\u7075\u6d3b\uff1a\u5728\u9999\u6e2f\u670d\u52a1\u5668\u6216\u7f8e\u56fd\u670d\u52a1\u5668\u4e0a\u642d\u5efa\u5907\u4efd\u8282\u70b9\uff0c\u957f\u671f\u6210\u672c\u901a\u5e38\u4f4e\u4e8e\u6258\u7ba1\u5907\u4efd\u670d\u52a1\uff0c\u4f46\u9700\u8981\u8fd0\u7ef4\u6295\u5165\u3002<\/li>\n<li>\u5b89\u5168\u6027\uff1a\u81ea\u5efa\u65b9\u6848\u9700\u91cd\u89c6\u5bc6\u94a5\u7ba1\u7406\u4e0e\u4f20\u8f93\u52a0\u5bc6\uff1b\u76f8\u8f83\u4e4b\u4e0b\uff0c\u90e8\u5206\u6258\u7ba1\u670d\u52a1\u63d0\u4f9b\u5185\u7f6e\u52a0\u5bc6\u4e0e\u591a\u533a\u5197\u4f59\uff0c\u8fd0\u7ef4\u8d1f\u62c5\u66f4\u5c0f\u3002<\/li>\n<li>\u6062\u590d\u901f\u5ea6\uff1a\u672c\u5730\u6216\u540c\u533a\u57df\uff08\u5982\u9999\u6e2fVPS 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target=\"_blank\">https:\/\/www.server.hk\/cloud.php<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60f3\u5728\u9999\u6e2fVPS\u4e0a\u5b9e\u73b0\u4e00\u952e\u5b9a\u65f6\u81ea\u52a8\u5907\u4efd\uff1f\u672c\u6587\u7528\u901a\u4fd7\u7684\u6b65\u9aa4\u6559\u4f60\u901a\u8fc7 cron\u3001\u5907\u4efd\u811a\u672c\u548c\u5b89\u5168\u4f20\u8f93\u5feb\u901f\u642d\u5efa\u53ef\u9760\u7684\u9999\u6e2fVPS 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