无法打开真机火墙该怎么解决？
[root@foundation66 ~]# systemctl start firewalld
Job for firewalld.service failed because a timeout was exceeded. See "systemctl status firewalld.service" and "journalctl -xe" for details.
[root@foundation66 ~]# systemctl status firewalld.service
解决方案：
@1先关闭虚拟机
[root@foundation66 ~]# systemctl stop libvirtd.service
@2重新启动火墙
[root@foundation66 ~]# systemctl start firewalld.service
[root@foundation66 ~]# systemctl status firewalld.service
##如果你正在使用虚拟机，记得再启动虚拟机
[root@foundation66 ~]# systemctl start libvirtd.service