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How to Install and Configure VNC Server on CentOS 8
How to Install and Configure VNC Server on CentOS 8
VNC stands for “Virtual Network Computing” is a GUI desktop sharing application that can be used to access and control other computers over a network. It uses the Remote Frame Buffer protocol and works on a client/server model. Generally, it is used by technical support people to manage and troubleshoot desktop, server and other network devices remotely.eval(ez_write_tag([[250,250],’howtoforge_com-box-3′,’ezslot_2′,106,’0′,’0′]));
In this tutorial, we will show you how to install VNC server on CentOS 8.
Prerequisites
- A system running CentOS 8 Desktop operating system.
- A root password is configured on your server.
Getting Started
By default, SELinux is enabled in CentOS 8 operating system and the VNC server will not work properly if SELinux is enabled. So it is a good idea to disable the SELinux in your system. You can disable it by editing the following file:
nano /etc/sysconfig/selinuxFind the following line:
SELINUX=enforcing
And, replace it with the following line:
SELINUX=disabled
Save and close the file when you are finished. Then, restart your system to implement the changes.
Install VNC Server
By default, TigerVNC is available in the CentOS 8 default repository. You can install it by running the following command:
dnf install tigervnc-server tigervnc-server-module -yOnce the installation has been completed, you can proceed to the next step.
Create New User and Set VNS Password
Next, you will need to create a new user for VNC remote desktop session. You can create a new user with name hitesh as shown below:
useradd hiteshNext, set password for this user with the following command:
passwd hiteshNext, switch the user to the hitesh and set VNC password for this user with the following command:
su - hitesh
vncpasswdProvide your desired password and hit enter to create the password as shown below:
Password: Verify: Would you like to enter a view-only password (y/n)? n A view-only password is not used
Next, exit from the hitesh user with the following command:
exitCreate Systemd Service File for VNC
Next, you will need to create a systemd service file for VNC. You can create it with the following command:
nano /etc/systemd/system/[email protected]Add the following lines:
[Unit] Description=Remote Desktop VNC Service After=syslog.target network.target [Service] Type=forking WorkingDirectory=/home/hitesh User=hitesh Group=hitesh ExecStartPre=/bin/sh -c '/usr/bin/vncserver -kill %i > /dev/null 2>&1 || :' ExecStart=/usr/bin/vncserver -autokill %i ExecStop=/usr/bin/vncserver -kill %i [Install] WantedBy=multi-user.target
Save and close the file when you are finished. Then, reload the systemd daemon with the following command:
systemctl daemon-reloadNext, start the VNC service on display 1 and enable to start after system reboot with the following command:
systemctl start [email protected]:1.service
systemctl enable [email protected]:1.serviceYou can now check the status of VNC service with the following command:
systemctl status [email protected]:1.serviceYou should get the following output:
? [email protected]:1.service - Remote Desktop VNC Service
Loaded: loaded (/etc/systemd/system/[email protected]; disabled; vendor preset: disabled)
Active: active (running) since Fri 2020-03-06 03:45:50 EST; 45s ago
Process: 2196 ExecStart=/usr/bin/vncserver -autokill :1 (code=exited, status=0/SUCCESS)
Process: 2190 ExecStartPre=/bin/sh -c /usr/bin/vncserver -kill :1 > /dev/null 2>&1 || : (code=exited, status=0/SUCCESS)
Tasks: 180 (limit: 12537)
Memory: 347.3M
CGroup: /system.slice/system-vncserver.slice/[email protected]:1.service
??2203 /usr/bin/Xvnc :1 -auth /home/hitesh/.Xauthority -desktop centos8:1 (hitesh) -fp catalogue:/etc/X11/fontpath.d -geometry 1024>
??2210 sh -c (/home/hitesh/.vnc/xstartup; /usr/bin/vncserver -kill :1) >> '/home/hitesh/.vnc/centos8:1.log' 2>&1 &
??2211 /bin/sh /home/hitesh/.vnc/xstartup
??2212 /usr/libexec/gnome-session-binary
??2221 dbus-launch --sh-syntax --exit-with-session
??2222 /usr/bin/dbus-daemon --syslog --fork --print-pid 6 --print-address 8 --session
??2230 /usr/bin/ssh-agent /etc/X11/xinit/Xclients
??2246 /usr/libexec/at-spi-bus-launcher
??2251 /usr/bin/dbus-daemon --config-file=/usr/share/defaults/at-spi2/accessibility.conf --nofork --print-address 3
??2253 /usr/libexec/at-spi2-registryd --use-gnome-session
??2257 /usr/libexec/gvfsd
??2264 /usr/libexec/gvfsd-fuse /home/hitesh/.gvfs -f -o big_writes
??2292 /usr/bin/gnome-keyring-daemon --start --components=secrets
??2336 /usr/libexec/gsd-power
VNC server is now started and listening on port 5901. You can check it with the following command:
netstat -tunlp | grep 5901You should get the following output:
tcp 0 0 0.0.0.0:5901 0.0.0.0:* LISTEN 2203/Xvnc tcp6 0 0 :::5901 :::* LISTEN 2203/Xvnc
Access VNC Server
VNC server is now installed and configured, it’s time to access your VNC server from the remote computer.
On the Windows/Linux machine, open the VNC Viewer application and provide your VNC server address as shown below:
Your-server-ip:5901
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Click on the Continue button. You should see the following screen:
Provide your VNC password and click on the OK button. Once you are connected, you should see your CentOS desktop in the following screen:
Conclusion
Congratulations! you have successfully installed and configured the VNC server on CentOS 8. I hope this will help you to manage remote computers easily over the network.
