RHEL 7 – Graphical User Mode(GUI) is not coming ?

When you install the Redhat Enterprise Linux on datacenter, we will be not be installing with gnome packages by default. But in some cases, you may need graphical user mode. So you have to install the gnome packages and it’s dependencies to bring the system in to GUI. In my case , I have installed the RHEL 7 without installing the GNOME packages. Let’s see that how we can bring the system in to the GUI mode and setting the GUI targets permanently.

Assuming that , Your system is already configured with proper yum repository .If not , please do it now.

1. Login to the RHEL7 system.

2. List the available group in the yum repository .

[root@UnixArena-RHEL7 ~]# yum group list
Loaded plugins: langpacks, product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Available environment groups:
   Minimal Install
   Infrastructure Server
   File and Print Server
   Basic Web Server
   Virtualization Host
   Server with GUI
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
[root@UnixArena-RHEL7 ~]#

3. Since , we are working on the server, let me install the group called “server with GUI” group.

[root@UnixArena-RHEL7 ~]# yum groupinstall 'Server with GUI'
Loaded plugins: langpacks, product-id, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
There is no installed groups file.
Maybe run: yum groups mark convert (see man yum)
Package 1:NetworkManager-config-server-0.9.9.1-13.git20140326.4dba720.el7.x86_64 already installed and latest version
Warning: Group core does not have any packages to install.
Warning: Group base does not have any packages to install.
Group base does have 1 conditional packages, which may get installed.
Resolving Dependencies
--> Running transaction check
---> Package ModemManager.x86_64 0:1.1.0-6.git20130913.el7 will be installed
--> Processing Dependency: libmbim-glib.so.0()(64bit) for package: ModemManager-1.1.0-6.git20130913.el7.x86_64
--> Processing Dependency: libqmi-glib.so.1()(64bit) for package: ModemManager-1.1.0-6.git20130913.el7.x86_64
---> Package NetworkManager-libreswan.x86_64 0:0.9.8.0-5.el7 will be installed
<<<<<
>>>>>>>
  xorg-x11-server-utils.x86_64 0:7.7-4.el7            xorg-x11-xkb-utils.x86_64 0:7.7-9.1.el7
  yelp-libs.x86_64 1:3.8.1-7.el7                      yelp-xsl.noarch 0:3.8.1-2.el7
  zenity.x86_64 0:3.8.0-4.el7

Complete!
[root@UnixArena-RHEL7 ~]#

4. If you do not want to install all the server management graphical tools, just install the gnome desktop  using the below command.

[root@UnixArena-RHEL7 ~]# yum groupinstall 'X Window System' 'GNOME'

5. In RHEL 7’s init  run-levels are called as targets. (We will discuss about this later). Check the current target on this system using systemctl command.

[root@UnixArena-RHEL7 ~]# systemctl get-default
multiuser.target
[root@UnixArena-RHEL7 ~]#

6.Modify the  target as “graphical.target” to bring the system in to the GUI mode by default.

[root@UnixArena-RHEL7 ~]# systemctl enable graphical.target --force
rm '/etc/systemd/system/default.target'
ln -s '/usr/lib/systemd/system/graphical.target' '/etc/systemd/system/default.target'
[root@UnixArena-RHEL7 ~]#

7.Verify the current target now.

[root@UnixArena-RHEL7 ~]# systemctl get-default
graphical.target
[root@UnixArena-RHEL7 ~]#

8. Reboot the system .

9. Accept  the license agreement and continue.

We have successfully configured the existing RHEL7 server with GUI .

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