How to Configure Tiger VNC Server on Linux 7

How to Configure Tiger VNC Server on Linux 7

Applies to:

            Oracle Enterprise Linux – Version: 7

Description:

            After successful installation of Oracle Linux 7, I need to configure VNC for remote access.

Solution:

            To configure Tiger VNC server on Oracle Linux 7 follow the simple steps:

           

To check the required rpm’s:

[root@testora ~]# rpm –qa |grep tigervnc

Install tigervnc-server

[root@testora ~]# yum install tigervnc-server –y

             

To create a user for VNC:

[root@testora ~]# adduser vncuser

[root@testora ~]# passwd vncuser

[root@testora ~]# su - vncuser

[vncuser@testora ~]$ vncpasswd

Password:

Verify:

[vncuser@testora ~]$ exit

[root@testora ~]#

Copy the following file:

[root@testora ~]# cp /lib/systemd/system/vncserver@.service /etc/systemd/system/vncserver@\:1.service

Edit the copied file.

[root@testora ~]# vi /etc/systemd/system/vncserver@\:1.service

At the end of the file, you will find the lines like below.

[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=/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

Replace <USER> with your real user, in my case, i replaced with a user called “vncuser”

[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=/sbin/runuser -l vncuser -c "/usr/bin/vncserver %i"

PIDFile=/home/vncuser/.vnc/%H%i.pid

ExecStop=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'

[Install]

WantedBy=multi-user.target

Add TCP Port in Firewall config:

[root@testora ~]# firewall-cmd --permanent --zone=public --add-port=5901/tcp

[root@testora ~]# firewall-cmd --reload

Reload the systemctl daemon as root

[root@testora ~]# systemctl daemon-reload

Start the VNC service as root.

[root@testora ~]# systemctl start vncserver@\:1.service

To check the status of vncserver:

[root@testora ~]# systemctl status vncserver@\:1.service

â vncserver@:1.service - Remote desktop service (VNC)

   Loaded: loaded (/etc/systemd/system/vncserver@:1.service; enabled; vendor preset: disabled)

   Active: active (running) since Tue 2018-12-11 10:58:07 PKT; 6s ago

  Process: 9681 ExecStart=/usr/sbin/runuser -l vncuser -c /usr/bin/vncserver %i (code=exited, status=0/SUCCESS)

  Process: 9673 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill %i > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)

 Main PID: 9723 (Xvnc)

   CGroup: /system.slice/system-vncserver.slice/vncserver@:1.service

           ⣠9723 /usr/bin/Xvnc :1 -desktop testora.test.org:1 (vncuser)...

Dec 11 10:58:04 testora.test.org systemd[1]: Starting Remote desktop ser...

Dec 11 10:58:07 testora.test.org systemd[1]: Started Remote desktop serv...

Hint: Some lines were ellipsized, use -l to show in full.

Enable it on system startup as root.

[root@testora ~]# systemctl enable vncserver@\:1.service

If the above procedure did not work, do the following:

[root@testora ~]# rm –rf /tmp/.X*-lock

[root@testora ~]# rm –rf /tmp/.X11-unix/X*

[root@testora ~]# systemctl restart vncserver@\:1.service

OR do the following:

[root@testora ~]# vncserver

You will require a password to access your desktops.

Password:

Verify:

xauth:  file /root/.Xauthority does not exist

New 'testora.test.org:1 (root)' desktop is testora.test.org:1

Creating default startup script /root/.vnc/xstartup

Starting applications specified in /root/.vnc/xstartup

Log file is /root/.vnc/testora.testt.org:1.log

Now you can access your Linux server from any client using VNC Viewer.

Your comments, especially which will help us improve the functionality, will be greatly appreciatedJ