{"id":17126,"date":"2024-11-18T11:32:04","date_gmt":"2024-11-18T03:32:04","guid":{"rendered":"https:\/\/fwq.ai\/blog\/17126\/"},"modified":"2024-11-18T11:32:04","modified_gmt":"2024-11-18T03:32:04","slug":"linux-systemd-crontab%e5%ae%9e%e4%be%8b%e6%95%99%e7%a8%8b%ef%bc%9a%e5%a6%82%e4%bd%95%e5%ae%9a%e6%97%b6%e6%b8%85%e7%90%86%e7%b3%bb%e7%bb%9f%e6%97%a5%e5%bf%97","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/17126\/","title":{"rendered":"Linux Systemd Crontab\u5b9e\u4f8b\u6559\u7a0b\uff1a\u5982\u4f55\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7"},"content":{"rendered":"

\"Linux<\/p>\n

Linux Systemd Crontab\u5b9e\u4f8b\u6559\u7a0b\uff1a\u5982\u4f55\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7<\/p>\n

\u4e00\u3001\u7b80\u4ecb<\/p>\n

\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\u662f\u8bb0\u5f55\u7cfb\u7edf\u8fd0\u884c\u72b6\u6001\u3001\u9519\u8bef\u4ee5\u53ca\u5176\u4ed6\u91cd\u8981\u4fe1\u606f\u7684\u5173\u952e\u6587\u4ef6\u4e4b\u4e00\u3002\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\u4f1a\u8d8a\u6765\u8d8a\u5927\uff0c\u5360\u7528\u5927\u91cf\u78c1\u76d8\u7a7a\u95f4\u3002\u4e3a\u4e86\u4fdd\u6301\u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\uff0c\u5b9a\u671f\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\u662f\u5341\u5206\u5fc5\u8981\u7684\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Systemd Crontab\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\uff0c\u540c\u65f6\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n

\u4e8c\u3001\u4f7f\u7528Systemd Crontab\u5b9a\u65f6\u6267\u884c\u811a\u672c<\/p>\n

Systemd Crontab\u662f\u57fa\u4e8eLinux\u7cfb\u7edf\u7684\u670d\u52a1\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u6765\u5b9a\u65f6\u6267\u884c\u4efb\u52a1\u3002\u4e0b\u9762\u662f\u4f7f\u7528Systemd Crontab\u5b9a\u65f6\u6267\u884c\u811a\u672c\u7684\u5177\u4f53\u6b65\u9aa4\uff1a<\/p>\n

    \n
  1. \u521b\u5efa\u6e05\u7406\u65e5\u5fd7\u7684\u811a\u672c<\/li>\n<\/ol>\n

    \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u811a\u672c\u6765\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\u3002\u53ef\u4ee5\u4f7f\u7528shell\u811a\u672c\u8bed\u8a00\u6765\u7f16\u5199\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u6e05\u7406\u65e5\u5fd7\u7684\u811a\u672c\uff08clean_logs.sh\uff09\uff1a<\/p>\n

    #!\/bin\/bash\n\n# \u6e05\u7406\/var\/log\u76ee\u5f55\u4e0b\u7684\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\nfind \/var\/log -type f -name \"*.log\" -exec rm -rf {} ;\n\n# \u91cd\u542f\u7cfb\u7edf\u65e5\u5fd7\u670d\u52a1\nsystemctl restart rsyslog<\/pre>\n
      \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
    \u4e0a\u8ff0\u811a\u672c\u4f7f\u7528find\u547d\u4ee4\u627e\u5230\/var\/log\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u65e5\u5fd7\u6587\u4ef6\uff0c\u5e76\u4f7f\u7528rm\u547d\u4ee4\u5220\u9664\u8fd9\u4e9b\u6587\u4ef6\u3002\u6700\u540e\uff0c\u4f7f\u7528systemctl\u547d\u4ee4\u91cd\u65b0\u542f\u52a8rsyslog\u670d\u52a1\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u65e5\u5fd7\u529f\u80fd\u6b63\u5e38\u3002<\/p>\n
      \n
    1. \u521b\u5efaSystemd\u670d\u52a1\u5355\u4f4d\u6587\u4ef6<\/li>\n<\/ol>\n
      \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2aSystemd\u670d\u52a1\u5355\u4f4d\u6587\u4ef6\uff0c\u7528\u4e8e\u5b9a\u4e49\u8981\u6267\u884c\u7684\u811a\u672c\u3002\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aclean_logs.service\u7684\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
      [Unit]\nDescription=Clean system logs\n\n[Service]\nExecStart=\/path\/to\/clean_logs.sh\n\n[Install]\nWantedBy=default.target<\/pre>\n
        \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
      \u9700\u8981\u5c06ExecStart\u7684\u8def\u5f84\u4fee\u6539\u4e3a\u5b9e\u9645\u7684\u811a\u672c\u8def\u5f84\u3002<\/p>\n
        \n
      1. \u521b\u5efaSystemd Crontab\u914d\u7f6e\u6587\u4ef6<\/li>\n<\/ol>\n
        \u5728\/etc\/systemd\/system\/\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aclean_logs.timer\u7684Systemd Crontab\u914d\u7f6e\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a<\/p>\n
        [Unit]\nDescription=Run clean_logs.service every day\n\n[Timer]\nOnCalendar=daily\nPersistent=true\n\n[Install]\nWantedBy=timers.target<\/pre>\n
          \u767b\u5f55\u540e\u590d\u5236   <\/p>\n
        \u4e0a\u8ff0\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0cOnCalendar\u8bbe\u7f6e\u4e86\u5b9a\u65f6\u4efb\u52a1\u7684\u6267\u884c\u65f6\u95f4\uff0c\u8fd9\u91cc\u8bbe\u7f6e\u4e3a\u6bcf\u5929\u6267\u884c\u4e00\u6b21\u3002Persistent\u8bbe\u7f6e\u4e3atrue\u8868\u793a\u5373\u4f7f\u7cfb\u7edf\u5173\u673a\uff0c\u4efb\u52a1\u4e5f\u4f1a\u5728\u4e0b\u6b21\u542f\u52a8\u65f6\u7ee7\u7eed\u6267\u884c\u3002<\/p>\n
          \n
        1. \u542f\u52a8\u548c\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1<\/li>\n<\/ol>\n
          \u5b8c\u6210\u4ee5\u4e0a\u6b65\u9aa4\u540e\uff0c\u53ef\u4ee5\u6309\u7167\u4ee5\u4e0b\u547d\u4ee4\u6765\u542f\u52a8\u548c\u7ba1\u7406\u5b9a\u65f6\u4efb\u52a1\uff1a<\/p>\n
          \u542f\u52a8\u5b9a\u65f6\u4efb\u52a1\uff1asystemctl start clean_logs.timer
          \u505c\u6b62\u5b9a\u65f6\u4efb\u52a1\uff1asystemctl stop clean_logs.timer
          \u91cd\u542f\u5b9a\u65f6\u4efb\u52a1\uff1asystemctl restart clean_logs.timer
          \u67e5\u770b\u5b9a\u65f6\u4efb\u52a1\u72b6\u6001\uff1asystemctl status clean_logs.timer<\/p>\n
          \u4e09\u3001\u67e5\u770b\u5b9a\u65f6\u4efb\u52a1\u6267\u884c\u7ed3\u679c<\/p>\n
          \u5b9a\u65f6\u4efb\u52a1\u6267\u884c\u5b8c\u6210\u540e\uff0c\u6211\u4eec\u5e0c\u671b\u80fd\u591f\u67e5\u770b\u4efb\u52a1\u7684\u6267\u884c\u7ed3\u679c\uff0c\u4ee5\u786e\u8ba4\u7cfb\u7edf\u65e5\u5fd7\u662f\u5426\u88ab\u6e05\u7406\u6210\u529f\u3002\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u4e24\u79cd\u65b9\u5f0f\u6765\u67e5\u770b\uff1a<\/p>\n
          \u67e5\u770bSystemd Crontab\u65e5\u5fd7\uff1ajournalctl -u clean_logs.timer
          \u67e5\u770b\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\uff1atail -n 100 \/var\/log\/syslog<\/p>\n
          \u56db\u3001\u603b\u7ed3<\/p>\n
          \u4f7f\u7528Systemd Crontab\u53ef\u4ee5\u65b9\u4fbf\u5730\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\uff0c\u907f\u514d\u78c1\u76d8\u7a7a\u95f4\u88ab\u8fc7\u5927\u7684\u65e5\u5fd7\u6587\u4ef6\u5360\u7528\u3002\u672c\u6587\u901a\u8fc7\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\uff0c\u8be6\u7ec6\u4ecb\u7ecd\u4e86\u5982\u4f55\u4f7f\u7528Systemd Crontab\u6765\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\u3002\u5e0c\u671b\u672c\u6587\u80fd\u591f\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\uff0c\u4f7f\u60a8\u80fd\u591f\u66f4\u597d\u5730\u7ba1\u7406Linux\u7cfb\u7edf\u7684\u65e5\u5fd7\u6587\u4ef6\u3002<\/p>\n
          \u4ee5\u4e0a\u5c31\u662fLinux Systemd Crontab\u5b9e\u4f8b\u6559\u7a0b\uff1a\u5982\u4f55\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
          Linux Systemd Crontab\u5b9e\u4f8b\u6559\u7a0b\uff1a\u5982\u4f55\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7 \u4e00\u3001\u7b80\u4ecb \u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\u662f\u8bb0\u5f55\u7cfb\u7edf\u8fd0\u884c\u72b6\u6001\u3001\u9519\u8bef\u4ee5\u53ca\u5176\u4ed6\u91cd\u8981\u4fe1\u606f\u7684\u5173\u952e\u6587\u4ef6\u4e4b\u4e00\u3002\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\uff0c\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6\u4f1a\u8d8a\u6765\u8d8a\u5927\uff0c\u5360\u7528\u5927\u91cf\u78c1\u76d8\u7a7a\u95f4\u3002\u4e3a\u4e86\u4fdd\u6301\u7cfb\u7edf\u7684\u6b63\u5e38\u8fd0\u884c\uff0c\u5b9a\u671f\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\u662f\u5341\u5206\u5fc5\u8981\u7684\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528Systemd Crontab\u5b9a\u65f6\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\uff0c\u540c\u65f6\u63d0\u4f9b\u5177\u4f53\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u4e8c\u3001\u4f7f\u7528Systemd Crontab\u5b9a\u65f6\u6267\u884c\u811a\u672c Systemd Crontab\u662f\u57fa\u4e8eLinux\u7cfb\u7edf\u7684\u670d\u52a1\u7ba1\u7406\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u6765\u5b9a\u65f6\u6267\u884c\u4efb\u52a1\u3002\u4e0b\u9762\u662f\u4f7f\u7528Systemd Crontab\u5b9a\u65f6\u6267\u884c\u811a\u672c\u7684\u5177\u4f53\u6b65\u9aa4\uff1a \u521b\u5efa\u6e05\u7406\u65e5\u5fd7\u7684\u811a\u672c \u9996\u5148\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2a\u811a\u672c\u6765\u6e05\u7406\u7cfb\u7edf\u65e5\u5fd7\u3002\u53ef\u4ee5\u4f7f\u7528shell\u811a\u672c\u8bed\u8a00\u6765\u7f16\u5199\uff0c\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u6e05\u7406\u65e5\u5fd7\u7684\u811a\u672c\uff08clean_logs.sh\uff09\uff1a #!\/bin\/bash # \u6e05\u7406\/var\/log\u76ee\u5f55\u4e0b\u7684\u7cfb\u7edf\u65e5\u5fd7\u6587\u4ef6 find \/var\/log -type f -name “*.log” -exec rm -rf {} ; # \u91cd\u542f\u7cfb\u7edf\u65e5\u5fd7\u670d\u52a1 systemctl restart rsyslog \u767b\u5f55\u540e\u590d\u5236 \u4e0a\u8ff0\u811a\u672c\u4f7f\u7528find\u547d\u4ee4\u627e\u5230\/var\/log\u76ee\u5f55\u4e0b\u7684\u6240\u6709\u65e5\u5fd7\u6587\u4ef6\uff0c\u5e76\u4f7f\u7528rm\u547d\u4ee4\u5220\u9664\u8fd9\u4e9b\u6587\u4ef6\u3002\u6700\u540e\uff0c\u4f7f\u7528systemctl\u547d\u4ee4\u91cd\u65b0\u542f\u52a8rsyslog\u670d\u52a1\uff0c\u4ee5\u786e\u4fdd\u7cfb\u7edf\u65e5\u5fd7\u529f\u80fd\u6b63\u5e38\u3002 \u521b\u5efaSystemd\u670d\u52a1\u5355\u4f4d\u6587\u4ef6 \u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u521b\u5efa\u4e00\u4e2aSystemd\u670d\u52a1\u5355\u4f4d\u6587\u4ef6\uff0c\u7528\u4e8e\u5b9a\u4e49\u8981\u6267\u884c\u7684\u811a\u672c\u3002\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aclean_logs.service\u7684\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a [Unit] Description=Clean system logs [Service] ExecStart=\/path\/to\/clean_logs.sh [Install] WantedBy=default.target \u767b\u5f55\u540e\u590d\u5236 \u9700\u8981\u5c06ExecStart\u7684\u8def\u5f84\u4fee\u6539\u4e3a\u5b9e\u9645\u7684\u811a\u672c\u8def\u5f84\u3002 \u521b\u5efaSystemd Crontab\u914d\u7f6e\u6587\u4ef6 \u5728\/etc\/systemd\/system\/\u76ee\u5f55\u4e0b\u521b\u5efa\u4e00\u4e2a\u540d\u4e3aclean_logs.timer\u7684Systemd Crontab\u914d\u7f6e\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a [Unit] Description=Run clean_logs.service every day […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-17126","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17126","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=17126"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/17126\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=17126"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=17126"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=17126"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}