{"id":30806,"date":"2026-05-20T16:00:00","date_gmt":"2026-05-20T08:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=30806"},"modified":"2026-05-17T07:12:37","modified_gmt":"2026-05-16T23:12:37","slug":"systemd-practical","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/linux\/systemd-practical\/","title":{"rendered":"systemd \u670d\u52a1\u5355\u5143\u7f16\u5199\u4e0e\u8fdb\u7a0b\u5b88\u62a4\u5b9e\u6218"},"content":{"rendered":"<p><img decoding=\"async\" alt=\"systemd \u670d\u52a1\u5355\u5143\u7f16\u5199\u4e0e\u8fdb\u7a0b\u5b88\u62a4\u5b9e\u6218\u793a\u610f\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/05\/systemd-practical-cover.webp\" \/><\/p>\n<p>\u672c\u6587\u6559\u4f60\u5728\u4e3b\u6d41 Linux \u4e0a\u7528 systemd \u7f16\u5199\u670d\u52a1\u5355\u5143\u3001\u914d\u7f6e\u4f9d\u8d56\u4e0e\u91cd\u542f\u7b56\u7565\uff0c\u5e76\u89e3\u51b3\u8fdb\u7a0b\u5f02\u5e38\u9000\u51fa\u3001\u65e5\u5fd7\u7206\u91cf\u3001\u5f00\u673a\u4e0d\u81ea\u542f\u4e09\u7c7b\u5e38\u89c1\u95ee\u9898\u3002\u8bfb\u5b8c\u4f1a\u62ff\u5230\u4e00\u4efd\u53ef\u76f4\u63a5\u5957\u7528\u7684 service \u6a21\u677f\u3001\u4e00\u4efd\u8d44\u6e90\u9650\u5236\u5bf9\u7167\u8868\u3001\u4e00\u4efd\u6545\u969c\u6392\u67e5\u6e05\u5355\uff0c\u4ee5\u53ca\u628a\u89c4\u8303\u56fa\u5316\u5230\u56e2\u961f SOP \u7684\u5efa\u8bae\u65b9\u6cd5\u3002<\/p>\n<h2>\u4e00\u3001\u4e3a\u4ec0\u4e48\u653e\u5f03 nohup \u6539\u7528 systemd<\/h2>\n<p>\u5f88\u591a\u4eba\u4ecd\u4e60\u60ef\u7528 nohup \u6216 screen \u628a\u8fdb\u7a0b\u6302\u5230\u540e\u53f0\uff0c\u95ee\u9898\u662f\u673a\u5668\u4e00\u91cd\u542f\u8fdb\u7a0b\u5c31\u6ca1\u4e86\u3001\u65e5\u5fd7\u56db\u6563\u5728\u5404\u5904\u6587\u4ef6\u3001\u5d29\u4e86\u4e0d\u4f1a\u81ea\u52a8\u8d77\u6765\u3001\u4e5f\u65e0\u6cd5\u505a\u8d44\u6e90\u9694\u79bb\u3002systemd \u662f\u5f53\u524d\u4e3b\u6d41\u53d1\u884c\u7248\u9ed8\u8ba4\u7684\u521d\u59cb\u5316\u7cfb\u7edf\uff0c\u63d0\u4f9b\u7edf\u4e00\u7684\u670d\u52a1\u7ba1\u7406\u3001\u4f9d\u8d56\u89e3\u6790\u3001cgroup \u8d44\u6e90\u9650\u5236\u4e0e journald \u65e5\u5fd7\u6536\u96c6\uff0c\u662f\u66ff\u4ee3 nohup \u4e0e\u81ea\u5199\u811a\u672c\u7684\u6807\u51c6\u65b9\u5f0f\u3002\u751f\u4ea7\u670d\u52a1\u5668\u4e0a\u51e0\u4e4e\u6240\u6709\u5e38\u9a7b\u8fdb\u7a0b\u90fd\u5e94\u8d70 unit \u6587\u4ef6\u7ba1\u7406\u3002<\/p>\n<p>\u8fc1\u79fb\u6210\u672c\u5176\u5b9e\u5f88\u4f4e\uff1a\u4e00\u4efd\u5178\u578b\u7684 unit \u6587\u4ef6\u901a\u5e38\u5341\u4e94\u884c\u4ee5\u5185\uff0c\u653e\u5230 <code>\/etc\/systemd\/system\/<\/code> \u76ee\u5f55\u4e0b\u6267\u884c <code>systemctl daemon-reload<\/code> \u540e\u5373\u53ef enable \u4e0e start\u3002\u4e0b\u9762\u8fd9\u5957\u89c4\u8303\u8986\u76d6\u4e86 service unit \u7684\u7ed3\u6784\u3001\u4f9d\u8d56\u8bed\u4e49\u3001\u91cd\u542f\u7b56\u7565\u3001\u8d44\u6e90\u9650\u5236\u4e0e\u65e5\u5fd7\u6392\u67e5\uff0c\u7167\u7740\u6539\u5c31\u80fd\u76f4\u63a5\u4e0a\u751f\u4ea7\u73af\u5883\u3002\u57fa\u7840\u90e8\u7f72\u4e0e\u673a\u5668\u9009\u578b\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/tutorials\/us-vps-deployment-tutorial-guide\/\">\u7f8e\u56fd VPS \u90e8\u7f72\u6559\u7a0b<\/a>\u3002<\/p>\n<h2>\u4e8c\u3001unit \u6587\u4ef6\u7684\u4e09\u6bb5\u7ed3\u6784<\/h2>\n<p>\u4e00\u4e2a service unit \u6587\u4ef6\u6309\u6bb5\u843d\u5206\u4e09\u5757\uff1a<code>[Unit]<\/code> \u6bb5\u5199\u63cf\u8ff0\u4e0e\u4f9d\u8d56\u5173\u7cfb\uff1b<code>[Service]<\/code> \u6bb5\u5199\u8fdb\u7a0b\u542f\u52a8\u65b9\u5f0f\u3001\u8fd0\u884c\u7528\u6237\u3001\u5de5\u4f5c\u76ee\u5f55\u3001\u8d44\u6e90\u9650\u5236\uff1b<code>[Install]<\/code> \u6bb5\u63a7\u5236\u5f00\u673a\u81ea\u542f\u65f6\u6302\u5230\u54ea\u4e2a target \u94fe\u8def\u3002\u6700\u5c0f\u53ef\u7528\u9aa8\u67b6\u793a\u4f8b\uff1a<code>Description=My Worker<\/code>\u3001<code>After=network-online.target<\/code>\u3001<code>Wants=network-online.target<\/code>\u3001<code>Type=simple<\/code>\u3001<code>User=app<\/code>\u3001<code>WorkingDirectory=\/opt\/myapp<\/code>\u3001<code>ExecStart=\/opt\/myapp\/venv\/bin\/python worker.py<\/code>\u3001<code>Restart=on-failure<\/code>\u3001<code>RestartSec=5s<\/code>\u3001<code>WantedBy=multi-user.target<\/code>\u3002<\/p>\n<p>\u5173\u952e\u70b9\u89e3\u91ca\uff1a<code>After<\/code> \u4e0e <code>Wants<\/code> \u4e00\u8d77\u5199\u8868\u793a\u5f31\u4f9d\u8d56\uff0cnetwork-online.target \u6bd4 network.target \u66f4\u7a33\u5065\uff0c\u53ef\u4ee5\u907f\u514d\u67d0\u4e9b\u7f51\u7edc\u9a71\u52a8\u5ef6\u8fdf\u5bfc\u81f4\u8fdb\u7a0b\u542f\u52a8\u5931\u8d25\uff1b<code>Type=simple<\/code> \u662f\u9ed8\u8ba4\u503c\uff0c\u8868\u793a ExecStart \u542f\u52a8\u7684\u8fdb\u7a0b\u672c\u8eab\u5c31\u662f\u670d\u52a1\u4e3b\u8fdb\u7a0b\uff1b<code>Restart=on-failure<\/code> \u8868\u793a\u975e\u96f6\u9000\u51fa\u7801\u6216\u88ab\u4fe1\u53f7\u6740\u6389\u65f6\u624d\u91cd\u542f\uff1b<code>WantedBy=multi-user.target<\/code> \u662f\u5f00\u673a\u542f\u52a8\u94fe\u4e0a\u6700\u5e38\u7528\u7684\u6302\u8f7d\u70b9\uff0c<code>systemctl enable<\/code> \u4f1a\u5728\u8fd9\u91cc\u5efa\u7acb\u7b26\u53f7\u94fe\u63a5\u3002\u53cd\u5411\u4ee3\u7406\u573a\u666f\u7684\u914d\u5957\u914d\u7f6e\u53ef\u7ee7\u7eed\u770b <a href=\"https:\/\/cn.hostease.com\/blog\/server\/nginx-reverse-proxy-load-balancing\/\">Nginx \u53cd\u5411\u4ee3\u7406\u4e0e\u8d1f\u8f7d\u5747\u8861<\/a>\u3002<\/p>\n<h2>\u4e09\u3001Type\u3001Restart \u4e0e\u4f9d\u8d56\u8bed\u4e49<\/h2>\n<p><code>Type=<\/code> \u5b57\u6bb5\u6700\u5e38\u7528\u7684\u4e09\u79cd\uff1asimple \u9002\u5408\u524d\u53f0\u8fd0\u884c\u7684\u7a0b\u5e8f\uff0c\u542f\u52a8\u540e\u4e0d fork\uff1bforking \u9002\u5408\u4f20\u7edf daemon\uff0c\u7a0b\u5e8f\u4f1a\u81ea\u5df1 fork \u51fa\u5b50\u8fdb\u7a0b\u540e\u7236\u8fdb\u7a0b\u9000\u51fa\uff0c\u9700\u8981\u914d\u5408 PIDFile \u5b57\u6bb5\uff1bnotify \u662f\u7a0b\u5e8f\u901a\u8fc7 sd_notify \u8c03\u7528\u4e3b\u52a8\u901a\u77e5 systemd \u81ea\u5df1\u5df2\u7ecf\u5c31\u7eea\uff0cNginx \u4e0e PostgreSQL \u90fd\u652f\u6301\u8fd9\u79cd\u6a21\u5f0f\uff0c\u542f\u52a8\u65f6\u5e8f\u6700\u51c6\u786e\u3002\u5982\u679c Type \u5199\u9519\uff0csystemd \u4f1a\u5224\u5b9a\u4e3b\u8fdb\u7a0b\u5df2\u9000\u51fa\uff0c\u89e6\u53d1\u9891\u7e41\u91cd\u542f\u3002<\/p>\n<p><code>Restart=<\/code> \u63a8\u8350\u8bbe\u4e3a on-failure\uff0c\u6bd4 always \u66f4\u5b89\u5168\uff0c\u907f\u514d\u6b63\u5e38 exit 0 \u4e5f\u88ab\u91cd\u65b0\u62c9\u8d77\uff1b\u7528 <code>StartLimitBurst=5<\/code> \u4e0e <code>StartLimitIntervalSec=60s<\/code> \u9650\u5236 60 \u79d2\u5185\u6700\u591a\u91cd\u542f 5 \u6b21\uff0c\u8d85\u51fa\u540e\u505c\u6b62\u907f\u514d\u75af\u72c2\u5faa\u73af\u3002\u4f9d\u8d56\u5173\u7cfb\u4e0a <code>After<\/code> \u662f\u6392\u5e8f\u7ea6\u675f\uff0c<code>Requires<\/code> \u662f\u5f3a\u4f9d\u8d56\uff08\u4f9d\u8d56\u76ee\u6807\u5931\u8d25\u5219\u672c\u670d\u52a1\u4e5f\u5931\u8d25\uff09\uff0c<code>Wants<\/code> \u662f\u5f31\u4f9d\u8d56\uff08\u4f9d\u8d56\u76ee\u6807\u5931\u8d25\u672c\u670d\u52a1\u4ecd\u542f\u52a8\uff09\u3002\u4e1a\u52a1\u670d\u52a1\u901a\u5e38\u7528 <code>Wants=network-online.target<\/code> \u52a0 <code>After=network-online.target<\/code> \u5c31\u591f\uff0c\u907f\u514d\u4e0e\u6570\u636e\u5e93\u4e4b\u95f4\u7528 Requires \u9020\u6210\u8fde\u9501\u5931\u8d25\u7ea7\u8054\u653e\u5927\u3002<\/p>\n<h2>\u56db\u3001\u8d44\u6e90\u9650\u5236\u4e0e\u5b89\u5168\u6c99\u7bb1<\/h2>\n<p>systemd \u901a\u8fc7 cgroup \u76f4\u63a5\u9650\u5236\u670d\u52a1\u7684\u8d44\u6e90\u5360\u7528\uff0c\u6bd4\u624b\u5199 ulimit \u53ef\u9760\u5f97\u591a\u3002\u5e38\u7528\u5b57\u6bb5\u5bf9\u7167\uff1a<code>MemoryMax=512M<\/code> \u8d85\u51fa\u7acb\u523b OOM \u6740\u6389\u672c\u670d\u52a1\u3001<code>MemoryHigh=400M<\/code> \u662f\u8f6f\u9650\u89e6\u53d1\u5185\u6838\u52a0\u538b\u56de\u6536\u3001<code>CPUQuota=50%<\/code> \u5355\u6838 50% \u5373\u534a\u4e2a\u6838\u3001<code>TasksMax=200<\/code> \u9650\u5236\u670d\u52a1\u603b\u8fdb\u7a0b\u4e0e\u7ebf\u7a0b\u6570\u3001<code>LimitNOFILE=65535<\/code> \u6587\u4ef6\u63cf\u8ff0\u7b26\u4e0a\u9650\u3001<code>IOWeight=100<\/code> \u5757\u8bbe\u5907 IO \u6743\u91cd\uff08\u8303\u56f4\u4e00\u5230\u4e00\u4e07\uff09\u3002<\/p>\n<p>\u5b89\u5168\u5b57\u6bb5\u4e5f\u5efa\u8bae\u9ed8\u8ba4\u5f00\u542f\uff1a<code>NoNewPrivileges=yes<\/code> \u7981\u6b62\u5b50\u8fdb\u7a0b\u901a\u8fc7 setuid \u6216 capabilities \u63d0\u6743\u3001<code>ProtectSystem=strict<\/code> \u628a \/usr \u4e0e \/etc \u8bbe\u4e3a\u53ea\u8bfb\u3001<code>ProtectHome=yes<\/code> \u9690\u85cf \/home \u76ee\u5f55\u3001<code>PrivateTmp=yes<\/code> \u7ed9\u670d\u52a1\u6302\u8f7d\u72ec\u7acb \/tmp \u547d\u540d\u7a7a\u95f4\u907f\u514d\u76f8\u4e92\u6cc4\u9732\u4e34\u65f6\u6587\u4ef6\u3002\u8fd9\u5957\u9650\u5236\u914d\u7f6e\u7684\u6838\u5fc3\u4f5c\u7528\u662f\u628a\u5355\u4e2a\u670d\u52a1\u7684\u6545\u969c\u534a\u5f84\u9501\u5b9a\u5728\u81ea\u5df1\u7684 cgroup \u91cc\uff0c\u5185\u5b58\u6cc4\u6f0f\u4e0d\u4f1a\u62d6\u6b7b\u6574\u673a\uff0c\u88ab\u653b\u7834\u4e5f\u65e0\u6cd5\u5199\u5165\u7cfb\u7edf\u76ee\u5f55\u3002CDN\uff08Content Delivery Network\uff0c\u5185\u5bb9\u5206\u53d1\u7f51\u7edc\uff09\u8fb9\u7f18\u8282\u70b9\u7684 worker \u8fdb\u7a0b\u4e5f\u5e38\u7528\u8fd9\u5957\u6c99\u7bb1\u914d\u7f6e\uff0c\u76f8\u5173\u56de\u6e90\u52a0\u901f\u7b56\u7565\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/cdn\/cloudflare-cdn-china-acceleration\/\">Cloudflare CDN \u4e2d\u56fd\u533a\u52a0\u901f<\/a>\u3002<\/p>\n<h2>\u4e94\u3001journald \u65e5\u5fd7\u4e0e\u6392\u67e5\u547d\u4ee4<\/h2>\n<p>journald \u81ea\u52a8\u6536\u96c6\u6240\u6709\u670d\u52a1\u7684 stdout \u4e0e stderr\uff0c\u4e0d\u9700\u8981\u5e94\u7528\u81ea\u5df1\u5199\u6587\u4ef6\u3002\u5e38\u7528\u67e5\u8be2\u547d\u4ee4\uff1a<code>journalctl -u myworker.service<\/code> \u770b\u5355\u670d\u52a1\u5386\u53f2\u65e5\u5fd7\u3001<code>-f<\/code> \u8ddf\u8e2a\u8f93\u51fa\u7c7b\u4f3c tail -f\u3001<code>--since \"1 hour ago\"<\/code> \u9650\u65f6\u95f4\u7a97\u3001<code>-p err<\/code> \u53ea\u770b error \u7ea7\u522b\u3001<code>-o json-pretty<\/code> \u8f93\u51fa\u7ed3\u6784\u5316\u65e5\u5fd7\u4fbf\u4e8e\u7a0b\u5e8f\u89e3\u6790\u3002<\/p>\n<p>\u670d\u52a1\u72b6\u6001\u7528 <code>systemctl status myworker<\/code> \u770b\u6700\u8fd1 10 \u884c\u65e5\u5fd7\u3001\u5f53\u524d PID\u3001cgroup \u5185\u5b58\u5360\u7528\u4e0e CPU \u65f6\u95f4\uff1b<code>systemctl list-units --failed<\/code> \u5217\u6240\u6709\u5931\u8d25\u72b6\u6001\u7684\u670d\u52a1\uff1b<code>systemctl show myworker -p MainPID,ExecMainStatus,Restart<\/code> \u67e5\u5177\u4f53\u5185\u90e8\u5b57\u6bb5\uff1b<code>systemctl cat myworker<\/code> \u67e5\u770b\u5b8c\u6574 unit \u5185\u5bb9\u5305\u542b drop-in \u8986\u76d6\u3002SSH \u5b88\u62a4\u8fdb\u7a0b\u7684\u76f8\u5173\u52a0\u56fa\u914d\u7f6e\u53ef\u53c2\u8003 <a href=\"https:\/\/cn.hostease.com\/blog\/linux\/linux-ssh-fail2ban-hardening\/\">Linux SSH \u4e0e Fail2ban \u52a0\u56fa<\/a>\u3002<\/p>\n<h2>\u516d\u3001\u5178\u578b\u6545\u969c\u6392\u67e5\u6e05\u5355<\/h2>\n<p><strong>\u670d\u52a1\u8d77\u4e0d\u6765<\/strong>\uff1a\u5148\u7528 <code>systemctl status<\/code> \u770b\u9000\u51fa\u9519\u8bef\u7801\uff0c\u518d\u7528 <code>journalctl -u<\/code> \u627e\u5f02\u5e38\u6808\uff1b\u6700\u5e38\u89c1\u7684\u539f\u56e0\u662f WorkingDirectory \u8def\u5f84\u4e0d\u5b58\u5728\u3001User \u5b57\u6bb5\u6ca1\u6743\u9650\u8bfb\u53d6\u6587\u4ef6\u3001ExecStart \u4e8c\u8fdb\u5236\u8def\u5f84\u5199\u9519\u3001\u4f9d\u8d56\u7684 target \u672a\u5c31\u7eea\u3002\u628a ExecStart \u547d\u4ee4\u76f4\u63a5\u590d\u5236\u5230\u7ec8\u7aef\u7528\u540c\u4e00\u4e2a User \u8dd1\u4e00\u904d\uff0c\u662f\u6700\u5feb\u7684\u5b9a\u4f4d\u529e\u6cd5\u3002<\/p>\n<p><strong>\u9891\u7e41\u91cd\u542f<\/strong>\uff1astatus \u8f93\u51fa\u4f1a\u663e\u793a <code>Active: activating (auto-restart)<\/code> \u4e0e\u7d2f\u8ba1\u91cd\u542f\u6b21\u6570\u3002\u539f\u56e0\u901a\u5e38\u662f Type \u5199\u9519\uff08\u5178\u578b\u5982 forking \u7684\u7a0b\u5e8f\u5199\u6210 simple\uff0csystemd \u8bef\u4ee5\u4e3a\u4e3b\u8fdb\u7a0b\u9000\u51fa\u5c31\u91cd\u542f\uff09\u3001\u4f9d\u8d56\u670d\u52a1\u8fd8\u6ca1\u8d77\u6765\u5c31\u88ab\u8c03\u5ea6\u3001\u5185\u5b58\u8d85 MemoryMax \u88ab OOM\u3002\u4e34\u65f6\u628a RestartSec \u52a0\u5927\u5230 30 \u79d2\uff0c\u7ed9\u81ea\u5df1\u7559\u6392\u67e5\u65f6\u95f4\u3002<\/p>\n<p><strong>\u65e5\u5fd7\u7206\u91cf<\/strong>\uff1ajournald \u9ed8\u8ba4 4GB \u6eda\u52a8\u8986\u76d6\uff0c\u4f46\u5e94\u7528\u6bcf\u79d2\u4e0a\u5343\u6761\u4ecd\u4f1a\u62d6\u7d2f\u6574\u673a IO\u3002<code>\/etc\/systemd\/journald.conf<\/code> \u91cc\u8bbe <code>SystemMaxUse=2G<\/code>\u3001<code>RateLimitIntervalSec=30s<\/code>\u3001<code>RateLimitBurst=1000<\/code> \u505a\u9650\u901f\u3002\u5728\u5e94\u7528\u5c42\u5173\u6389 debug \u7ea7\u522b\u65e5\u5fd7\u624d\u662f\u6839\u6cbb\u529e\u6cd5\u3002<\/p>\n<h2>\u4e03\u3001\u751f\u4ea7\u5efa\u8bae<\/h2>\n<p>systemd \u4e0d\u662f\u90e8\u7f72\u5de5\u5177\uff0c\u662f\u7528\u6765\u7ba1\u7406\u5e38\u9a7b\u8fdb\u7a0b\u7684\u6807\u51c6\u65b9\u5f0f\u3002\u5efa\u8bae\u628a\u81ea\u5199\u811a\u672c\u3001Python worker\u3001Go \u4e8c\u8fdb\u5236\u3001Node \u670d\u52a1\u90fd\u6539\u5199\u6210 unit \u6587\u4ef6\u3002\u53ef\u4ee5\u8003\u8651\u628a unit \u6587\u4ef6\u7eb3\u5165 Git \u4e0e<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e<\/a>\u4e00\u8d77\u505a\u7248\u672c\u7ba1\u7406\uff0cAnsible \u4e0e SaltStack \u90fd\u6709\u73b0\u6210 module \u76f4\u63a5\u5206\u53d1\u3002\u5982\u679c\u4f60\u9700\u8981\u5728\u591a\u53f0\u670d\u52a1\u5668\u4e0a\u505a\u7edf\u4e00\u7f16\u6392\uff0c\u53ef\u4ee5\u8003\u8651\u7528 systemd \u7684 template unit\uff08\u5e26 <code>@<\/code> \u7684\u5b9e\u4f8b\u5316\u670d\u52a1\uff09\u6279\u91cf\u7ba1\u7406\u540c\u7c7b\u5de5\u4f5c\u8fdb\u7a0b\u3002<\/p>\n<p>\u603b\u7ed3\uff1a\u4e00\u4efd\u5408\u683c\u7684 service unit \u5305\u542b\u660e\u786e\u7684 Type\u3001\u5408\u7406\u7684 Restart \u4e0e StartLimit\u3001\u5fc5\u8981\u7684 MemoryMax \u4e0e TasksMax\uff0c\u52a0\u4e0a NoNewPrivileges \u4e0e ProtectSystem \u6c99\u7bb1\u5b57\u6bb5\uff0c\u518d\u914d\u5408 journalctl \u505a\u65e5\u5fd7\u6392\u67e5\u4e0e\u544a\u8b66\uff0c\u8db3\u4ee5\u66ff\u4ee3 99% \u7684 nohup \u4e0e\u81ea\u5199\u5b88\u62a4\u811a\u672c\u3002\u5efa\u8bae\u628a\u8fd9\u5957\u89c4\u8303\u56fa\u5316\u8fdb\u56e2\u961f\u7684\u90e8\u7f72 SOP \u4e0e\u4e0a\u7ebf\u68c0\u67e5\u6e05\u5355\u91cc\uff0c\u957f\u671f\u6536\u76ca\u975e\u5e38\u660e\u663e\uff0c\u4e5f\u4fbf\u4e8e\u65b0\u6210\u5458\u5feb\u901f\u63a5\u624b\u5b58\u91cf\u670d\u52a1\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7cfb\u7edf\u8bb2\u89e3 systemd service unit \u7f16\u5199\u3001\u4f9d\u8d56\u4e0e\u91cd\u542f\u7b56\u7565\u3001\u8d44\u6e90\u9650\u5236\u3001journald \u65e5\u5fd7\u4e0e\u5178\u578b\u6545\u969c\u6392\u67e5\uff0c\u9644\u53ef\u76f4\u63a5\u5957\u7528\u7684\u670d\u52a1\u6a21\u677f\u3002<\/p>\n","protected":false},"author":2,"featured_media":30797,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4363],"tags":[],"class_list":["post-30806","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux"],"aioseo_notices":[],"jetpack_featured_media_url":"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/05\/systemd-practical-cover.webp","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/30806","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/comments?post=30806"}],"version-history":[{"count":1,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/30806\/revisions"}],"predecessor-version":[{"id":30808,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/posts\/30806\/revisions\/30808"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media\/30797"}],"wp:attachment":[{"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/media?parent=30806"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/categories?post=30806"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cn.hostease.com\/blog\/wp-json\/wp\/v2\/tags?post=30806"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}