Chapter 2. Installing RHEL image builder

Procedure

1. Install RHEL image builder and other necessary packages:

   # yum install osbuild-composer composer-cli cockpit-composer

   • osbuild-composer - A service to build customized RHEL operating system images.
   • composer-cli- This package enables access to the CLI interface.
   • cockpit-composer - This package enables access to the Web UI interface. The web console is installed as a dependency of the cockpit-composer package.

2. Enable and start RHEL image builder socket:

   # systemctl enable --now osbuild-composer.socket

3. If you want to use RHEL image builder in the web console, enable and start it.

   # systemctl enable --now cockpit.socket

   The osbuild-composer and cockpit services start automatically on first access.

4. Load the shell configuration script so that the autocomplete feature for the composer-cli command starts working immediately without logging out and in:

   $ source /etc/bash_completion.d/composer-cli

5. Restart the running osbuild-composer service on your RHEL host.

   # systemctl restart osbuild-composer

Procedure

1. Remove the osbuild-composer backend.

   # yum remove osbuild-composer
   # yum remove weldr-client

2. In the /etc/yum.conf file, add an exclude entry for osbuild-composer package.

   # cat /etc/yum.conf
   [main]
   gpgcheck=1
   installonly_limit=3
   clean_requirements_on_remove=True
   best=True
   skip_if_unavailable=False
   exclude=osbuild-composer weldr-client

3. Install the lorax-composer package.

   # yum install lorax-composer composer-cli

4. Enable and start the lorax-composer service to start after each reboot.

   # systemctl enable --now lorax-composer.socket
   # systemctl start lorax-composer