[root@svr7 ~]# firefox 192.168.4.7 Error: GDK_BACKEND does not match available displays
检测httpd服务是否开启
[root@svr7 ~]# systemctl status httpd ● httpd.service - The Apache HTTP Server Loaded: loaded (/usr/lib/systemd/system/httpd.service; disabled; vendor preset: disabled) Active: active (running) since 一 2018-10-29 09:14:45 CST; 2h 12min ago Docs: man:httpd(8) man:apachectl(8) Process: 2383 ExecStop=/bin/kill -WINCH ${MAINPID} (code=exited, status=0/SUCCESS) Main PID: 2387 (httpd) Status: "Total requests: 6; Current requests/sec: 0; Current traffic: 0 B/sec" CGroup: /system.slice/httpd.service ├─2387 /usr/sbin/httpd -DFOREGROUND ├─2388 /usr/sbin/httpd -DFOREGROUND ├─2389 /usr/sbin/httpd -DFOREGROUND ├─2390 /usr/sbin/httpd -DFOREGROUND ├─2391 /usr/sbin/httpd -DFOREGROUND ├─2392 /usr/sbin/httpd -DFOREGROUND └─2443 /usr/sbin/httpd -DFOREGROUND
阿帕奇服务已经打开，远程的时候可能是图形界面未开 （远程是未加-X选项）
[root@svr7 ~]# exit 登出 Connection to 192.168.4.7 closed.
[root@room9pc01 ~]# ssh -X 192.168.4.7 root@192.168.4.7's password: Last login: Mon Oct 29 11:24:50 2018 from 192.168.4.254 [root@svr7 ~]# firefox 192.168.4.7 ================> 可以正常访问，不在报错。
