在 CentOS 7 1804 中 安装使用 VNC

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1. 安装VNC：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# yum -y install tigervnc-server

2. 启动VNC并设置密码：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# vncserver
   
   You will require a password to access your desktops.
   
   Password:
   Verify:
   Would you like to enter a view-only password (y/n)? y
   Password:
   Verify:
   xauth:  file /root/.Xauthority does not exist
   
   New 'CentOS-x86-64-DVD-1804-Desktop:1 (root)' desktop is CentOS-x86-64-DVD-1804-Desktop:1
   
   Creating default startup script /root/.vnc/xstartup
   Creating default config /root/.vnc/config
   Starting applications specified in /root/.vnc/xstartup
   Log file is /root/.vnc/CentOS-x86-64-DVD-1804-Desktop:1.log
   

3. 创建窗口1的开机启动：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# cp /lib/systemd/system/[email protected] /etc/systemd/system/vncserver@:1.service
   

4. 修改窗口1的开机启动：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# vim /etc/systemd/system/vncserver@:1.service

   原始内容：

   [Unit]
   Description=Remote desktop service (VNC)
   After=syslog.target network.target
   
   [Service]
   Type=forking
   
   # Clean any existing files in /tmp/.X11-unix environment
   ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
   ExecStart=/usr/sbin/runuser -l <USER> -c "/usr/bin/vncserver %i"
   PIDFile=/home/<USER>/.vnc/%H%i.pid
   ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
   
   [Install]
   WantedBy=multi-user.target

   修改为（root用户）：

   [Unit]
   Description=Remote desktop service (VNC)
   After=syslog.target network.target
   
   [Service]
   Type=forking
   
   # Clean any existing files in /tmp/.X11-unix environment
   ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
   ExecStart=/usr/sbin/runuser -l root -c "/usr/bin/vncserver %i"
   PIDFile=/root/.vnc/%H%i.pid
   ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'
   
   [Install]
   WantedBy=multi-user.target

5. 设置窗口1的开机启动：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# systemctl enable vncserver@:1.service

6. 开启窗口1：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# systemctl start vncserver@:1.service

7. 开启5900+？端口：
   开启窗口1，开放端口5901（即5900+1）：
   开启端口5901（需要开启防火墙）：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# firewall-cmd --zone=public --add-port=5901/tcp --permanent
   

   重启防火墙：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# systemctl restart firewalld.service

   
   查看已开放端口：

   [root@CentOS-x86-64-DVD-1804-Desktop ~]# firewall-cmd --list-ports
   5901/tcp

8. 打开VNC客户端：
   输入地址后点回车：
   
    
9. 输入密码：
   
    
10. 连接后如图所示：
    
     
11. 
     

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