1.确认环境

cat /etc/redhat-release
CentOS release 6.7 (Final)

2.拷贝配置文件到当前目录下

cp /lib/systemd/system/vncserver@.service .

3.编辑配置文件

vi vncserver@.service
修改以下地方中的<USER>，两处修改为当前系统用户名：
ExecStart=/sbin/runuser -l <USER> -c "/usr/bin/vncserver %i"
PIDFile=/home/<USER>/.vnc/%H%i.pid
修改后：
ExecStart=/usr/sbin/runuser -l root -c "/usr/bin/vncserver %i"
PIDFile=/root/.vnc/%H%i.pid

4.新建脚本start-vnc.sh

#!/bin/bash
systemctl set-default graphical.target
systemctl stop firewalld
yum update
yum groupinstall "GNOME Desktop" "X Window System" "Desktop"
yum install tigervnc-server tigervnc vnc vnc-server
cp vncserver@.servic /etc/systemd/system/vncserver@:1.service
systemctl daemon-reload
vncserver -kill :1
vncserver

5.vnc设置密码

vncpasswd

6.VNC Viewer访问

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