Install VNC server on Centos

1. Install Gnome desktop

yum groupinstall "GNOME Desktop" "Graphical Administration Tools" -y
yum groupinstall "X Window System" "Desktop" -y

2. Install VNC Server

yum install tigervnc tigervnc-server -y

3. Configure VNC

a. The /lib/systemd/system/[email protected] copy of the document

cp /lib/systemd/system/[email protected] /etc/systemd/system/vncserver@:1.service

b. vncserver @:. 1.service file obtained <USER> modified to account VNC Client connection, a modified root here, PIDFILE need to modify the contents of the file as follows:

[Unit]
Description=Remote desktop service (VNC)
After=syslog.target network.target

[Service]
Type=forking
User=root

ExecStartPre=-/usr/bin/vncserver -kill %i
ExecStart=/usr/bin/vncserver %i
PIDFile=/root/.vnc/%H%i.pid
ExecStop=-/usr/bin/vncserver -kill %i

[Install]
WantedBy=multi-user.target

c. Set VNCServer password vncpasswd

d. Start and arranged to boot from the start VNCServer

systemctl start vncserver@:1.service
systemctl enable vncserver@:1.service

If the startup error:

Job for vncserver@:1.service failed because a configured resource limit was exceeded. See "systemctl status vncserver@:1.service" and "journalctl -xe" for details.

The /root/.vnc/xstartup in the vncserver -kill $ DISPLAY commented

#!/bin/sh

unset SESSION_MANAGER
unset DBUS_SESSION_BUS_ADDRESS
/etc/X11/xinit/xinitrc
#vncserver -kill $DISPLAY

 

Or systemctl daemon-reload

Or delete /tmp/.X11-unix/ directory rm /tmp/.X11-unix/ -rf

Restart Service

vncserver -kill :1

vncserver: 1
if the firewall is enable, the following rules must be guaranteed

firewall-cmd --permanent --add-service="vnc-server" --zone="public"
firewall-cmd --reload