- Install the required VNC server packages in AlmaLinux 8.3 as follows:
yum -y install tigervnc-server tigervnc
- The default configuration files for the tigervnc-server are located in /etc/tigervnc. In this directory, the following files are present.
- Map the users to a particular port by adding the following option (:x=user) in /etc/tigervnc/vncserver.users file.
- You should configure one vnc session per user as AlmaLinux 8.3 only supports one unique user per GUI session per machine.
- Now you will have to edit vncserver-config-defaults file to configure Xvnc parameters. The values in this file will be applied to every user unless the user has its own configuration file in $HOME/.vnc/config. The same options with different values are set in vncserver-config-mandatory file, which replaces the default configuration file and has a higher priority. The format of the configuration file is option=value.
- Make sure the parameter session=gnome in the above code matches the name of the session desktop file in the/usr/share/xsessions directory (case-sensitive).
- Run the following command to start the Tigervnc server. This command should be run as a user who will be starting and using the vnc server. The vnc password must be set while the user is logged in and not by the root.
- As root, start the Tigervnc server as follows:
# systemctl enable vncserver@:$x.service
# systemctl start vncserver@:$x.service
- In the above command, you should replace the variable $x by the actual number configured in /etc/tigervnc/vncserver.users
systemctl enable vncserver@:1.service --now
- Open vnc default port 5901 in the firewall as follows:
firewall-cmd --permanent --zone=public --add-port 5901/tcp
- Reload firewall.