How to Install and Configure VNC Server on AlmaLinux 9

To install and configure a VNC server on AlmaLinux 9, follow these steps:

Step 1 : Update System Packages

Run the following command to ensure your system is up to date:

sudo dnf update -y

Step 2 : Install Required Packages

Install the EPEL repository:

sudo dnf install epel-release -y

Install the Xfce desktop environment:

sudo dnf groupinstall "Xfce" "base-x" -y

Set the graphical target as default:

sudo systemctl set-default graphical

Step 3 : Install TigerVNC Server

Install the TigerVNC server package:

sudo dnf install tigervnc-server -y

Step 4 : Set Up VNC Password

Run the following command to create a password for VNC:

vncpasswd

Step 5 : Configure VNC Server

Edit the VNC startup file:

mkdir -p ~/.vnc/
nano ~/.vnc/xstartup

Add the following lines:

session=xfce
geometry=1920x1200
alwaysshared

Save and exit the file.

Step 6 : Configure VNC User Mapping

Open the VNC server users file:

sudo nano /etc/tigervnc/vncserver.users

Add the following line:

:1=root

Save and exit.

Step 7 : Reload System Daemon

sudo systemctl daemon-reload

Step 8 : Start and Enable VNC Service

Start the VNC server service:

sudo systemctl start vncserver@:1.service

Enable it to start on boot:

sudo systemctl enable vncserver@:1.service

Check the status:

sudo systemctl status vncserver@:1.service

Step 9 : Configure Firewall (if applicable)

If you are using a firewall, allow VNC connections:

sudo firewall-cmd --add-port=5901/tcp --permanent
sudo firewall-cmd --reload

Step 10 : Connect to Your VNC Server

Use a VNC client such as TigerVNC Viewer or RealVNC to connect to:

<your_server_ip>:5901

If you see a warning about an unencrypted connection, click Continue.

Step 11 : Login and Access Your Desktop

Enter your VNC password and log in to access your Xfce desktop environment.

Congratulations! You have successfully installed and configured a VNC server on AlmaLinux 9.