Linux admins spend most of their time on working in a terminal; there are some who like to work on GUI instead of a terminal. By default, CentOS 7 installed as the minimal server, and user intervention is required to change the installation type. This guide will help you to install GUI on CentOS 7 on the top of the minimal server installation.
Before installing GUI, make a Local Yum Repository to avoid downloading packages from the internet.
Optional: Run the following command to list down the available package groups for CentOS 7.
# yum group list
Loaded plugins: fastestmirror There is no installed groups file. Maybe run: yum groups mark convert (see man yum) Loading mirror speeds from cached hostfile Available Environment Groups: Minimal Install Compute Node Infrastructure Server File and Print Server Basic Web Server Virtualization Host Server with GUI GNOME Desktop KDE Plasma Workspaces Development and Creative Workstation Available Groups: Compatibility Libraries Console Internet Tools Development Tools Graphical Administration Tools Legacy UNIX Compatibility Scientific Support Security Tools Smart Card Support System Administration Tools System Management Done
Step 1: Install Gnome GUI packages using the YUM command.
# yum groupinstall "GNOME Desktop" "Graphical Administration Tools"
# yum groupinstall "Server with GUI"
Step 2: Enable GUI on system startup. In CentOS 7 / RHEL 7, systemd uses “targets” instead of runlevel. The /etc/inittab file is no more used to change run levels. So, issue the following command to enable the GUI on system start.
# ln -sf /lib/systemd/system/runlevel5.target /etc/systemd/system/default.target
Step 3: Reboot the machine to start the server in the graphical mode.