求助服务器宕机之后启动发生如下错误

[root@cdh-170 ~]# service sshd restart
Restarting sshd (via systemctl):
** (pkttyagent:23928): WARNING **: Unable to register authentication agent: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PolicyKit1 was not provided by any .service files
Error registering authentication agent: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PolicyKit1 was not provided by any .service files (g-dbus-error-quark, 2)

造成的结果就是 170 服务器不能互信了

有人知道如何解决吗我使用 yum reinstall openssh* 不能解决。