Linux无法重启Failed to Access denied

安排几台机器的打补丁升级，需要重启机器，执行了init 6，命令敲下去毫无反应。

尝试用journalctl看日志，发现报错 Access denied，我已经是root用户执行了哇！

查到一篇文章说是触发了一个常见的bug，执行以下命令后再执行重启即可

https://major.io/p/systemd-in-fedora-22-failed-to-restart-service-access-denied/
There’s a very active bug under review to get it fixed. As a workaround, you can re-execute systemd with the following command:

systemctl daemon-reexec