VNC简介 ：

    Virtual Network Computing,虚拟网络计算,VNC与操作系统无关，因此可跨平台使用，例如可用Windows连线到某Linux的电脑，反之亦同。甚至在没有安装用户端程式的电脑中，只要有支援JAVA的浏览器，也可使用

   安装VNC服务：

[root@server002 ~]# yum install tigervnc tigervnc-server 

    编辑vncserver配置文件

[root@server002 .vnc]# vim /etc/sysconfig/vncservers 
……

VNCSERVERS="3:centos 7:root"
VNCSERVERARGS[2]="-geometry 800x600 -nolisten tcp -localhost"

[root@server002 .vnc]# su - centos
[centos@server002 ~]$ vncserver
You will require a password to access your desktops.
Password:
Verify:
xauth:  creating new authority file /home/centos/.Xauthority
New 'server002.com:1 (centos)' desktop is server002.com:1
……

    重新启动服务 

[root@server002 .vnc]# /etc/init.d/vncserver restart
Shutting down VNC server: 3:centos 7:root                  [FAILED]
Starting VNC server: 3:centos 
New 'server002.com:3 (centos)' desktop is server002.com:3

Starting applications specified in /home/centos/.vnc/xstartup
Log file is /home/centos/.vnc/server002.com:3.log

7:root 
New 'server002.com:7 (root)' desktop is server002.com:7

Starting applications specified in /root/.vnc/xstartup
Log file is /root/.vnc/server002.com:7.log

                                                           [  OK  ] 

从192.168.73.111连接192.168.73.173vnc服务器3号端口

[root@bogon ~]# vncviewer 192.168.73.173:3