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如何检查用户级 systemd 单元的状态

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如何检查用户级 systemd 单元的状态

如果有一个名为位于的alice用户级别 systemd 服务单元，那么我可以将用户切换到 alice 并使用该开关检查该单元的状态：foo.service/home/alice/.config/systemd/user/foo.service--user

root@srv0:~# su - alice
To run a command as administrator (user "root"), use "sudo <command>".
See "man sudo_root" for details.
alice@srv0:~$ systemctl status foo.service --user 
● foo.service - foo
   Loaded: loaded (/home/alice/.config/systemd/user/foo.service; disabled; v
   Active: active (running) since Sat 2019-03-23 04:11:03 UTC; 2min 6s ago
 Main PID: 2246 (python3)
   CGroup: /user.slice/user-20021.slice/[email protected]/foo.service
           └─2246 python3 /home/alice/devapp foo bar baz

是否可以在不切换用户的情况下检查设备状态（并操作设备）？

我尝试过使用sudo但它不起作用：

root@srv0:~# sudo -l -u alice systemctl status --user foo
/bin/systemctl status --user foo
root@srv0:~# sudo -u alice systemctl status --user foo
Failed to connect to bus: No such file or directory

我也尝试过使用user@UID语法，也不起作用：

root@srv0:~# systemctl status user@1001:foo
● user@1001:foo.service - User Manager for UID 1001:foo
   Loaded: loaded (/lib/systemd/system/[email protected]; static; vendor preset: enabled)
   Active: inactive (dead)

答案1

根据这次讨论 https://lists.freedesktop.org/archives/systemd-devel/2014-March/018227.html 像这样的东西会起作用：

env XDG_RUNTIME_DIR=/run/user/1000 sudo --preserve-env=XDG_RUNTIME_DIR -u alice systemctl status --user foo

您只需要以某种方式获取 XDG_RUNTIME_DIR 即可。

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