{"id":32874,"date":"2026-08-27T10:00:00","date_gmt":"2026-08-27T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32874"},"modified":"2026-08-28T21:57:46","modified_gmt":"2026-08-28T13:57:46","slug":"crontab-not-running-troubleshooting","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/crontab-not-running-troubleshooting\/","title":{"rendered":"crontab \u4e0d\u6267\u884c\u6392\u67e5\uff1a\u670d\u52a1\u5668\u5b9a\u65f6\u4efb\u52a1\u6545\u969c\u8bca\u65ad\u5b9e\u6218"},"content":{"rendered":"

\u670d\u52a1\u5668\u4e0a\u7684\u5b9a\u65f6\u4efb\u52a1\u7a81\u7136\u4e0d\u6267\u884c\u4e86\uff0c\u65e5\u5fd7\u91cc\u5374\u4e00\u7247\u5b89\u9759\uff0c\u7528 crontab -l<\/code> \u4e5f\u80fd\u770b\u5230\u914d\u7f6e\uff0c\u53ef\u4efb\u52a1\u5c31\u662f\u6ca1\u8dd1\u3002\u8fd9\u662f\u670d\u52a1\u5668\u8fd0\u7ef4\u91cc\u6700\u5e38\u89c1\u7684\u5751\u4e4b\u4e00\u3002\u8fd9\u7bc7\u6587\u7ae0\u6559\u4f60\u4ece cron \u670d\u52a1\u672c\u8eab\u3001\u6267\u884c\u73af\u5883\u3001\u6587\u4ef6\u6743\u9650\u3001\u65f6\u533a\u3001\u8d44\u6e90\u5360\u7528\u51e0\u4e2a\u89d2\u5ea6\u9010\u5c42\u5b9a\u4f4d\uff0c\u5e76\u7ed9\u51fa\u53ef\u4ee5\u76f4\u63a5\u5957\u7528\u7684\u9a8c\u8bc1\u547d\u4ee4\u3002\u8bfb\u5b8c\u4f60\u5c31\u80fd\u72ec\u7acb\u5b8c\u6210 crontab \u4e0d\u6267\u884c\u7684\u6392\u67e5\uff0c\u51cf\u5c11\u53cd\u590d\u91cd\u542f\u670d\u52a1\u5668\u7684\u6298\u817e\u3002\u4e0b\u9762\u6240\u6709\u793a\u4f8b\u90fd\u57fa\u4e8e\u5e38\u89c1\u7684 Linux \u53d1\u884c\u7248\uff0c\u5e76\u5047\u8bbe\u4f60\u7684\u7cfb\u7edf\u4f7f\u7528 systemd \u4f5c\u4e3a\u521d\u59cb\u5316\u670d\u52a1\u3002<\/p>\n

\"crontab<\/p>\n

\u5148\u786e\u8ba4 cron \u5b88\u62a4\u8fdb\u7a0b\u771f\u7684\u5728\u8fd0\u884c<\/h2>\n

\u5f88\u591a\u4eba\u5728\u6392\u67e5\u65f6\u7b2c\u4e00\u53cd\u5e94\u662f\u68c0\u67e5 crontab -l<\/code> \u7684\u8f93\u51fa\uff0c\u4f46\u8fd9\u53ea\u80fd\u8bc1\u660e\u5b9a\u65f6\u4efb\u52a1\u5df2\u7ecf\u88ab\u5199\u5165\uff0c\u5e76\u4e0d\u80fd\u8bf4\u660e\u8c03\u5ea6\u670d\u52a1\u672c\u8eab\u5728\u8dd1\u3002\u5728 systemd \u73af\u5883\u4e0b\uff0ccron \u4ee5\u670d\u52a1\u5f62\u5f0f\u5b58\u5728\uff0c\u4e00\u65e6\u670d\u52a1\u610f\u5916\u505c\u6b62\u6216\u4ece\u672a\u542f\u7528\uff0c\u6240\u6709\u4efb\u52a1\u90fd\u4f1a\u9759\u9ed8\u5931\u6548\u3002\u5148\u6267\u884c\u4e0b\u9762\u4e24\u6761\u547d\u4ee4\u786e\u8ba4\uff1a<\/p>\n

systemctl status cron\nsystemctl is-enabled cron\n<\/code><\/pre>\n
\u5982\u679c\u770b\u5230\u670d\u52a1\u72b6\u6001\u4e0d\u662f active (running)<\/code>\uff0c\u5c31\u628a\u5b83\u542f\u52a8\u5e76\u8bbe\u4e3a\u5f00\u673a\u81ea\u542f\uff1a<\/p>\n
sudo systemctl enable --now cron\n<\/code><\/pre>\n
\u9700\u8981\u63d0\u9192\u7684\u662f\uff0c\u4e0d\u540c\u53d1\u884c\u7248\u7684 cron \u670d\u52a1\u540d\u53ef\u80fd\u4e0d\u540c\uff0c\u6709\u7684\u53eb cron<\/code>\uff0c\u6709\u7684\u53eb crond<\/code>\u3002\u4f60\u53ef\u4ee5\u7528 systemctl list-units | grep -i cron<\/code> \u5148\u627e\u5230\u6b63\u786e\u540d\u5b57\uff0c\u518d\u5bf9\u53f7\u5165\u5ea7\u3002\u8fd9\u4e00\u6b65\u867d\u7b80\u5355\uff0c\u5374\u5e38\u88ab\u8df3\u8fc7\uff0c\u800c\u5b83\u6070\u6070\u80fd\u89e3\u91ca\u4e3a\u4ec0\u4e48\u4efb\u52a1\u5b8c\u5168\u6ca1\u6709\u4efb\u4f55\u6267\u884c\u75d5\u8ff9\u3002<\/p>\n
\"cron<\/p>\n
\u68c0\u67e5\u6267\u884c\u73af\u5883\u4e0e PATH\uff0c\u811a\u672c\u91cc\u7684\u547d\u4ee4\u627e\u4e0d\u5230<\/h2>\n
cron \u6267\u884c\u811a\u672c\u65f6\uff0c\u5e76\u4e0d\u4f1a\u7ee7\u627f\u4f60\u5728\u7ec8\u7aef\u767b\u5f55\u540e\u624b\u52a8 export<\/code> \u7684\u90a3\u4e9b\u73af\u5883\u53d8\u91cf\uff0c\u5b83\u53ea\u63d0\u4f9b\u4e00\u4e2a\u975e\u5e38\u7cbe\u7b80\u7684 PATH\u3002\u5982\u679c\u4f60\u7684\u811a\u672c\u91cc\u76f4\u63a5\u7528\u547d\u4ee4\u540d\uff08\u6bd4\u5982 php<\/code>\u3001mysqldump<\/code>\u3001ffmpeg<\/code>\uff09\uff0c\u5728 cron \u91cc\u5f88\u53ef\u80fd\u56e0\u4e3a\u627e\u4e0d\u5230\u547d\u4ee4\u800c\u9759\u9ed8\u5931\u8d25\uff0c\u9000\u51fa\u7801\u975e\u96f6\u4f46\u65e5\u5fd7\u88ab\u4e22\u5f03\u3002\u8fd9\u662f\u5b9a\u65f6\u4efb\u52a1\u4e0d\u6267\u884c\u6216”\u6267\u884c\u4e86\u5374\u6ca1\u6548\u679c”\u6700\u5e38\u89c1\u7684\u539f\u56e0\u4e4b\u4e00\u3002<\/p>\n
\u6700\u7a33\u59a5\u7684\u505a\u6cd5\u662f\u811a\u672c\u5185\u4f7f\u7528\u7edd\u5bf9\u8def\u5f84\uff0c\u6216\u8005\u5728 crontab \u9876\u90e8\u663e\u5f0f\u58f0\u660e PATH\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u540c\u65f6\u5904\u7406\u4e86\u4e24\u8005\u7684\u793a\u4f8b\uff1a<\/p>\n
PATH=\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/sbin:\/bin\n* * * * * \/usr\/bin\/php \/var\/www\/backup.php >> \/var\/log\/backup.log 2>&1\n<\/code><\/pre>\n
\u628a\u6807\u51c6\u8f93\u51fa\u548c\u9519\u8bef\u90fd\u91cd\u5b9a\u5411\u5230\u65e5\u5fd7\u6587\u4ef6\uff0c\u662f\u6392\u67e5\u5b9a\u65f6\u4efb\u52a1\u7684\u9ec4\u91d1\u4e60\u60ef\u3002\u811a\u672c\u91cc\u7684\u547d\u4ee4\u662f\u5426\u90fd\u80fd\u88ab\u627e\u5230\uff0c\u53ef\u4ee5\u7528 which<\/code> \u548c type<\/code> \u5728\u811a\u672c\u91cc\u63d0\u524d\u786e\u8ba4\uff0c\u4e5f\u53ef\u4ee5\u5148\u624b\u52a8\u4ee5\u6700\u5c0f\u73af\u5883\u8dd1\u4e00\u6b21\uff1aenv -i \/bin\/sh \/path\/to\/script.sh<\/code>\uff0c\u8fd9\u6837\u80fd\u6a21\u62df cron \u7684\u8d2b\u7620\u73af\u5883\uff0c\u5feb\u901f\u66b4\u9732\u7f3a\u547d\u4ee4\u7684\u95ee\u9898\u3002\u8fd9\u7c7b\u73af\u5883\u53d8\u91cf\u76f8\u5173\u7684\u5751\uff0c\u4e5f\u5e38\u51fa\u73b0\u5728\u7f51\u7ad9\u6027\u80fd\u4f18\u5316<\/a>\u7684\u573a\u666f\u91cc\uff0c\u503c\u5f97\u4e00\u5e76\u7559\u610f\u3002<\/p>\n
\"\u767b\u5f55<\/p>\n
\u6838\u5bf9\u811a\u672c\u6743\u9650\u4e0e\u6240\u5c5e\u7528\u6237<\/h2>\n
cron \u4f1a\u4ee5 crontab \u6240\u5c5e\u7528\u6237\u7684\u8eab\u4efd\u6267\u884c\u4efb\u52a1\uff0c\u5e76\u53d7\u5230\u6587\u4ef6\u7cfb\u7edf\u6743\u9650\u7684\u7ea6\u675f\u3002\u811a\u672c\u82e5\u7f3a\u5c11\u53ef\u6267\u884c\u6743\u9650\uff0c\u6216\u8005\u5c5e\u4e3b\u4e0e\u8c03\u5ea6\u7528\u6237\u4e0d\u4e00\u81f4\uff0c\u90fd\u53ef\u80fd\u88ab\u8df3\u8fc7\u3002\u5e38\u89c1\u7684\u8868\u73b0\u662f\uff1a\u4efb\u52a1\u5728\u7ec8\u7aef\u91cc\u624b\u52a8\u8dd1\u5b8c\u5168\u6b63\u5e38\uff0c\u4ea4\u7ed9 cron \u5c31\u6beb\u65e0\u52a8\u9759\u3002\u5148\u68c0\u67e5\u811a\u672c\u672c\u8eab\u7684\u5c5e\u6027\uff1a<\/p>\n
ls -l \/var\/www\/backup.php\n<\/code><\/pre>\n
\u786e\u8ba4\u811a\u672c\u81f3\u5c11\u5bf9\u6267\u884c\u7528\u6237\u5177\u6709\u8bfb\u548c\u6267\u884c\u6743\u9650\u3002\u5982\u679c\u811a\u672c\u662f\u4ece\u522b\u5904\u590d\u5236\u6765\u7684\uff0c\u5c5e\u4e3b\u53ef\u80fd\u53d8\u6210\u4e86 root \u6216\u5176\u4ed6\u7528\u6237\uff0c\u5bfc\u81f4\u5b9a\u65f6\u4efb\u52a1\u6240\u5c5e\u7528\u6237\u65e0\u6cd5\u8bbf\u95ee\u3002\u6b64\u65f6\u53ef\u4ee5\u4fee\u6b63\u5c5e\u4e3b\u4e0e\u6743\u9650\uff0c\u4f8b\u5982\uff1a<\/p>\n
sudo chown www-data:www-data \/var\/www\/backup.php\nsudo chmod 750 \/var\/www\/backup.php\n<\/code><\/pre>\n
\u540c\u65f6\u68c0\u67e5\u811a\u672c\u8981\u5199\u5165\u7684\u65e5\u5fd7\u3001\u4e34\u65f6\u76ee\u5f55\u662f\u5426\u5141\u8bb8\u8be5\u7528\u6237\u5199\u5165\u3002\u6743\u9650\u4e0d\u8db3\u65f6\uff0c\u811a\u672c\u53ef\u80fd\u521a\u5f00\u59cb\u5c31\u62a5\u9519\u9000\u51fa\uff0c\u4f46\u56e0\u4e3a\u8f93\u51fa\u88ab\u4e22\u5f03\uff0c\u4f60\u5728\u65e5\u5fd7\u91cc\u4ec0\u4e48\u90fd\u770b\u4e0d\u5230\u3002<\/p>\n
\"\u5b9a\u65f6\u4efb\u52a1\u811a\u672c\u56e0\u6743\u9650\u4e0d\u8db3\u88ab\u963b\u6b62\u6267\u884c\"<\/p>\n
\u6392\u9664\u65f6\u533a\u9519\u4f4d\u9020\u6210\u7684”\u4e0d\u6267\u884c”\u5047\u8c61<\/h2>\n
\u8fd8\u6709\u4e00\u79cd\u9690\u853d\u60c5\u51b5\uff1a\u4efb\u52a1\u5176\u5b9e\u6267\u884c\u4e86\uff0c\u53ea\u662f\u65f6\u95f4\u5bf9\u4e0d\u4e0a\uff0c\u770b\u8d77\u6765\u50cf”\u6ca1\u6267\u884c”\u3002cron \u9ed8\u8ba4\u4f7f\u7528\u7cfb\u7edf\u65f6\u533a\u6765\u5339\u914d\u4f60\u586b\u5199\u7684\u65f6\u95f4\u5b57\u6bb5\u3002\u5982\u679c\u670d\u52a1\u5668\u65f6\u533a\u662f UTC\uff0c\u800c\u4f60\u4ee5\u4e3a\u5199\u7684\u662f\u5317\u4eac\u65f6\u95f4\uff0c\u90a3\u4e48\u539f\u5b9a 02:00 \u7684\u4efb\u52a1\u4f1a\u8dd1\u5230 10:00 \u624d\u89e6\u53d1\u3002\u5148\u7528\u8fd9\u4e24\u6761\u547d\u4ee4\u786e\u8ba4\u670d\u52a1\u5668\u5f53\u524d\u65f6\u95f4\u548c\u65f6\u533a\uff1a<\/p>\n
date\ntimedatectl\n<\/code><\/pre>\n
\u82e5\u65f6\u533a\u4e0d\u7b26\u5408\u9884\u671f\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4e3a\u4e1c\u516b\u533a\uff1a<\/p>\n
sudo timedatectl set-timezone Asia\/Shanghai\n<\/code><\/pre>\n
\u5bf9\u4e8e\u4f9d\u8d56\u7cbe\u786e\u65f6\u95f4\u70b9\u7684\u4efb\u52a1\uff0c\u5efa\u8bae\u5728\u811a\u672c\u5f00\u5934\u628a\u76ee\u6807\u65f6\u533a\u4e00\u5e76\u786e\u8ba4\uff0c\u907f\u514d\u590f\u4ee4\u65f6\u5207\u6362\u6216\u65f6\u533a\u53d8\u66f4\u5bfc\u81f4\u8c03\u5ea6\u9519\u4e71\u3002\u628a”\u65f6\u95f4\u5bf9\u4e0d\u5bf9”\u548c”\u4efb\u52a1\u8dd1\u6ca1\u8dd1”\u5206\u5f00\u9a8c\u8bc1\uff0c\u6392\u67e5\u4f1a\u9ad8\u6548\u5f88\u591a\u3002<\/p>\n
\u5173\u6ce8\u8d44\u6e90\u5360\u7528\u4e0e\u811a\u672c\u5361\u6b7b<\/h2>\n
\u5373\u4f7f cron \u670d\u52a1\u6b63\u5e38\u3001\u811a\u672c\u6743\u9650\u65e0\u8bef\uff0c\u4efb\u52a1\u4e5f\u53ef\u80fd\u56e0\u4e3a\u8d44\u6e90\u4e0d\u8db3\u6216\u4e0a\u4e00\u6b21\u8fd0\u884c\u672a\u7ed3\u675f\u800c\u88ab\u8df3\u8fc7\u3002\u8bb8\u591a cron \u8c03\u5ea6\u5668\u9ed8\u8ba4\u4e0d\u5141\u8bb8\u540c\u4e00\u4efb\u52a1\u5e76\u53d1\u6267\u884c\uff0c\u5982\u679c\u811a\u672c\u91cc\u6709\u4e2a\u5faa\u73af\u6216\u7f51\u7edc\u8bf7\u6c42\u8fdf\u8fdf\u4e0d\u7ed3\u675f\uff0c\u4e0b\u4e00\u6b21\u89e6\u53d1\u5c31\u4f1a\u88ab\u5ffd\u7565\u3002\u89c2\u5bdf\u8fdb\u7a0b\u4e0e\u8d44\u6e90\uff1a<\/p>\n
ps aux | grep -i backup\nfree -h\ndf -h\n<\/code><\/pre>\n
\u5982\u679c\u53d1\u73b0\u4efb\u52a1\u8fdb\u7a0b\u957f\u671f\u6ede\u7559\uff0c\u4f18\u5148\u7ed9\u811a\u672c\u52a0\u4e0a\u8d85\u65f6\u63a7\u5236\uff0c\u4f8b\u5982\u7528 timeout 300 \/usr\/bin\/php \/var\/www\/backup.php<\/code> \u9650\u5236\u5355\u6b21\u8fd0\u884c\u65f6\u957f\u3002\u78c1\u76d8\u5199\u6ee1\u6216\u5185\u5b58\u8017\u5c3d\u540c\u6837\u4f1a\u5bfc\u81f4\u4efb\u52a1\u9759\u9ed8\u5931\u8d25\uff0c\u8fd9\u7c7b\u95ee\u9898\u901a\u5e38\u5728 dmesg<\/code> \u6216\u7cfb\u7edf\u65e5\u5fd7\u91cc\u7559\u6709\u7ebf\u7d22\u3002<\/p>\n
WordPress \u7ad9\u70b9\u7684 WP-Cron \u4e0e\u771f\u5b9e crontab<\/h2>\n
\u8dd1 WordPress \u7ad9\u70b9\u65f6\uff0c\u8fd8\u4f1a\u9047\u5230\u4e00\u4e2a\u7279\u6b8a\u7684\u5751\uff1a\u5f88\u591a\u7ad9\u70b9\u4f9d\u8d56 WP-Cron \u901a\u8fc7\u9875\u9762\u8bbf\u95ee\u89e6\u53d1\u4efb\u52a1\uff0c\u800c\u4e0d\u662f\u771f\u6b63\u7684\u7cfb\u7edf crontab\u3002\u5982\u679c\u4f60\u7684\u7ad9\u70b9\u6d41\u91cf\u4f4e\uff0cWP-Cron \u53ef\u80fd\u957f\u65f6\u95f4\u4e0d\u88ab\u89e6\u53d1\uff0c\u5bfc\u81f4\u5907\u4efd\u3001\u66f4\u65b0\u7b49\u8ba1\u5212\u4efb\u52a1”\u540d\u4e49\u4e0a\u5b58\u5728\u3001\u5b9e\u9645\u4ece\u4e0d\u6267\u884c”\u3002\u60f3\u4e86\u89e3 WordPress \u4fa7\u5b9a\u65f6\u4efb\u52a1\u7684\u6b63\u786e\u914d\u7f6e\u65b9\u5f0f\uff0c\u53ef\u4ee5\u53c2\u8003\u7ad9\u5185 WordPress \u5206\u7c7b<\/a>\u4e0b\u7684\u76f8\u5173\u6559\u7a0b\uff0c\u4e5f\u53ef\u4ee5\u5bf9\u7167\u670d\u52a1\u5668\u5206\u7c7b<\/a>\u91cc\u66f4\u7cfb\u7edf\u7684\u8fd0\u7ef4\u6587\u7ae0\u3002\u7a33\u59a5\u7684\u505a\u6cd5\u662f\u5728\u7cfb\u7edf crontab \u91cc\u663e\u5f0f\u8c03\u7528 WordPress \u7684\u8c03\u5ea6\u5165\u53e3\uff0c\u7528\u771f\u5b9e\u5b9a\u65f6\u4efb\u52a1\u66ff\u4ee3\u4f9d\u8d56\u8bbf\u5ba2\u7684 WP-Cron\uff0c\u8ba9\u7ad9\u70b9\u5728\u4f4e\u6d41\u91cf\u65f6\u4e5f\u80fd\u7a33\u5b9a\u5b8c\u6210\u4efb\u52a1\u3002<\/p>\n
\u603b\u7ed3\u4e0e\u4e0b\u4e00\u6b65\u5efa\u8bae<\/h2>\n
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