如何修复 systemd 错误：Failed to determine user credentials: No such process
问题
你有一个 systemd 服务，例如
service_unit.ini
[Unit]
Description=My Service
[Service]
ExecStart=/usr/bin/my-service
User=myuser
[Install]
WantedBy=multi-user.target但在日志中（systemctl status my-service）你看到以下错误：
journalctl-log.txt
Jun 19 18:41:36 mycomputer (nice)[1349797]: my-service.service: Failed to determine user credentials: No such process
Jun 19 18:41:36 mycomputer systemd[1]: my-service.service: Main process exited, code=exited, status=217/USER解决方案
原因很简单：你在 User= 指令中指定的用户在你的系统上不存在。
检查用户名是否有拼写错误，并验证它在运行服务的计算机上确实存在。
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