Centos 使用Systemctl報Error getting authority: Error initializing authority: Error calling StartServiceByName for org.freedesktop.PolicyKit1: Timeout was reached (g-io-error-quark, 24)

在使用centos7.4 安裝服務的時候報錯：

Error getting authority: Error initializing authority: Error calling StartServiceByName for org.freedesktop.PolicyKit1: Timeout was reached (g-io-error-quark, 24)

解決方案：

ps -ef |grep polkit

再安裝：
 pyum reinstall polkit

再重啟
reboot

就可以解決