Banner Message¶

To show a specific message on the Desktop login screen, use the Hiera key gdm::banner_message:

gdm::banner_message: 'Good morning, this is a test banner message!'

Which then looks on RHEL8 like

The default is

Please contact the service desk (phone: 4800) in case you have problems logging in.

As the key suggests this is only implemented for gdm (default).