(firewall-config:817): Gtk-WARNING **: cannot open display:

OS VERSION：redhat 7

 

问题：

[root@test2 ~]# firewall-config

(firewall-config:806): Gtk-WARNING **: cannot open display: 

 

解决方法：

cat /etc/ssh/sshd_config 
X11Forwarding yes

在配置文件里添加上ForwardX11Trusted yes后，重新ssh，图形界面仍然无法出来，可能配置文件没有生效

man ssh

-Y      Enables trusted X11 forwarding.  Trusted X11 forwardings are not subjected to the X11 SECURITY extension controls.

 

[root@test1 ~]# ssh -Y test2

然后再执行firewall-config出来图形界面