Getting Kerberos Working on 19.10 Release

I managed to get CIFS working with Kerberos on my newly rebuilt X8-2m running ODA release 19.22.

However, I need to get this working on my existing 19.10 environments to ensure it works prior to upgrading my environments to 19.22.

Unfortunately the required packaged don't exist on the 19.10 release to issue "realm" commands.

I was able to obtain the correct krb5-workstation rpm from :

However, I think I also need realmd and oddjob, oddjob-mkhomedir, sssd according to

How do I find out what version of these packages is compatible with my 19.10 ODA release ?

Thanks,

Sean.