Configuring VNC Server on Linux

Install the VNC Server.

( Method – 1 )

For RHEL , CentOS ,OEL.

 # yum install tigervnc-server

 For Ubuntu.

 # apt-get install tigervnc-server

 Edit the “/etc/sysconfig/vncservers” file to configure the required displays.

The following entries enable VNC for display numbers “:2” and “:3”. Notice multiple “display:user” pairs are defined on a single line, but the arguments for each display are defined separately.

 VNCSERVERS=”2:root 3:admin”

VNCSERVERARGS[2]=”-geometry 1280×1024 -nolisten tcp -localhost”
VNCSERVERARGS[3]=”-geometry 1280×1024″

 Press Shift +C

 :wq!

 Set the VNC password for any users defined in the “/etc/sysconfig/vncservers” file.

 # su admin

# vncpasswd
Password:
Verify:
Enable the “vncserver” service for autostart and start the service.

# chkconfig vncserver on
# service vncserver start

 You should now be able to use a VNC viewer to connect to system using the display numbers and passwords defined.

Use the following commands to stop the service and disable autostart.

# service vncserver stop
# chkconfig vncserver off

 (Method -2 )

 Install the VNC Server.

 # yum install tigervnc-server

 Create a new configuration file for each of the display numbers you want to enable. In the following case, I am setting up the display number “:3”. Notice how the display number is included in the configuration file name.

 # cp /lib/systemd/system/vncserver@.service  /lib/systemd/system/vncserver@:3.service

 Run the following command.

 # systemctl daemon-reload

 Set the VNC password for the user defined in the new configuration file.

 # su – oracle

$ vncpasswd
Password:
Verify:
$ exit
Enable the service for autostart and start the service.

# systemctl enable vncserver@:3.service
# systemctl start vncserver@:3.service

 You should now be able to use a VNC viewer to connect to system using the display number and password defined.

Use the following commands to stop the service and disable autostart.

 # systemctl stop vncserver@:3.service

# systemctl disable vncserver@:3.service

Done. Thanks