CentOS7中使用systemctl列出启动失败的服务

本教程介绍如何使用systemctl工具列出启动失败的systemd管理的各个服务

列出启动失败的服务

[root@localhost ~]# systemctl list-units --state failed
  UNIT          LOAD   ACTIVE SUB    DESCRIPTION
● httpd.service loaded failed failed The Apache HTTP Server

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

1 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.

可以发现，有个一个服务启动失败了。

is-failed选项

可以使用is-failed选项检查指定的服务是否启动失败。如果启动失败，结果是fai