查看“Cockpit 自动开机启动时异常问题处理”的源代码

ystemctl enable cockpit 时，会出现如下错误：

 The unit files have no installation config (WantedBy, RequiredBy, Also, Alias
 settings in the [Install] section, and DefaultInstance for template units).
 This means they are not meant to be enabled using systemctl.
 Possible reasons for having this kind of units are:
 1) A unit may be statically enabled by being symlinked from another unit's
   .wants/ or .requires/ directory.
 2) A unit's purpose may be to act as a helper for some other unit which has
   a requirement dependency on it.
 3) A unit may be started when needed via activation (socket, path, timer,
   D-Bus, udev, scripted systemctl call, ...).
 4) In case of template units, the unit is meant to be enabled with some
   instance name specified.
修改cockpit.service 文件为如下所示：

 cat /usr/lib/systemd/system/cockpit.service 
 [Unit]
 Description=Cockpit Web Service
 Documentation=man:cockpit-ws(8)
 Requires=cockpit.socket
  
 [Service]
 ExecStartPre=/usr/sbin/remotectl certificate --ensure --user=root --group=cockpit-ws --selinux-type=etc_t
 ExecStart=/usr/libexec/cockpit-ws
 PermissionsStartOnly=true
 User=cockpit-ws
 Group=cockpit-ws
  
 [Install]
 WantedBy=multi-user.target
添加 [Install] 配置单元，然后执行下面代码，即可解决问题。

 systemctl enable --now cockpit.socket