systemctl enable cockpit 时，会出现如下错误：
The unit files have no installation config (WantedBy, RequiredBy, Also, Aliassettings 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 ServiceDocumentation=man:cockpit-ws(8)Requires=cockpit.socket[Service]ExecStartPre=/usr/sbin/remotectl certificate --ensure --user=root --group=cockpit-ws --selinux-type=etc_tExecStart=/usr/libexec/cockpit-wsPermissionsStartOnly=trueUser=cockpit-wsGroup=cockpit-ws[Install]WantedBy=multi-user.target
添加 [Install] 配置单元，即可解决问题。
参考链接：
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更新：2019年6月12日14:57:08
sudo systemctl enable --now cockpit.socket
参考地址：https://www.ovirt.org/download/