How To Install VNC Server on CentOS 7

Install VNC Server on CentOS 7

In this tutorial, we will show you how to install VNC Server on CentOS 7. For those of you who didn’t know, VNC (Virtual Network Computing) server is free and open-source software that is designed for allowing remote access to the Desktop Environment of the server to the VNC Client whereas the VNC viewer is used on the remote computer to connect to the server.

This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple. I will show you through the step-by-step installation VNC server on CentOS 7.

Install VNC Server on CentOS 7

Step 1. First, you need to update the system to ensure that we have all of the latest software installed.

yum update

Step 2. Install the Gnome desktop.

yum groupinstall "GNOME Desktop"

Step 3. Install Tigervnc server and X11 fonts.

yum install tigervnc-server xorg-x11-fonts-Type1

Copy the VNC server configuration file  /etc/systemd/system/ for configuring the system service. While copying, you can mention which port it should listen to. By default VNC server listens on 5900:

cp /lib/systemd/system/[email protected] /etc/systemd/system/[email protected]:5.service

Edit VNC server file configuration:

nano /etc/systemd/system/[email protected]:5.service
## Replace <USER> with your real user, in my case i replaced with user called “idroot” with the screen size ##
[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 idroot -c “/usr/bin/vncserver %i -geometry 1280×1024″
PIDFile=/home/idroot/.vnc/%H%i.pid
ExecStop=/bin/sh -c ‘/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :'[Install]
WantedBy=multi-user.target

Step 4. Configure firewall rules to allow the VNC connection.

firewall-cmd --permanent --zone=public --add-port=5905/tcp
firewall-cmd --reload

Step 5. Start the VNC server.

vncserver

Set the password.

You will require a password to access your desktops.

Password:
Verify:
xauth:  file /home/idroot/.Xauthority does not exist

New ‘localhost.localdomain:1 (idroot)’ desktop is server.idroot.us:1

Creating default startup script /home/idroot/.vnc/xstartup
Starting applications specified in /home/idroot/.vnc/xstartup
Log file is /home/idroot/.vnc/server.idroot.us:1.log

Step 6. Enabling and starting the VNC service

Reload the systemctl daemon as root.

systemctl daemon-reload

Start the VNC service as root:

systemctl start [email protected]:5.service

Enable it on system startup as root:

systemctl enable [email protected]:5.service

Step 7. Now you can able to connect the VNC server using IP and Port ( Eg: 192.168.2.109:5 ) and you will be asked to enter the password, enter the password that you have created earlier.

Install VNC Server on CentOS 7

Install VNC Server on CentOS 7

Congratulations! You have successfully installed the VNC server. Thanks for using this tutorial for installing the VNC server on CentOS 7 system. For additional help or useful information, we recommend you check the official VNC website.

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