Katello supports upgrades from version 2.0. For users transitioning from 1.4, please see - Transition Guide.
Katello 3.0 unifies Host and Conent Host objects to provide a more unified experience. As a result, it is no longer allowed to have more than one Content Host with the same FQDN. This matches the requirement that is already imposed on the Foreman Host object. Upon upgrade to Katello 3.0 any Hosts that violate one of three rules will be deleted:
Before upgrading if you would like to see a report of which Content Hosts will be deleted, a script is available as part of Katello 2.4.2. To run the report run:
The command will print the number of Content Hosts that will be deleted upon upgrade and generate a csv with the full list including the uuid, name, last checkin date, and a reason for their deletion.
The upgrade of Pulp has the potential to take a lengthy amount of time. This is not an error, the migrations Pulp is performing are moving data and symlinks around which, depending on the amount of synced content and content views (thus symlinks) can result in long upgrade times. So if the upgrade Pulp step is taking a long time, please be patient. We advise users to plan their outage windows for upgrade around this potential. Some examples from the community of upgrade times:
~18 hours for 1.5TB /var/lib/pulp ~6 hours for 176GB /var/lib/pulp ~2 hours for 290GB /var/lib/pulp ~2-3 hours for 270GB /var/lib/pulp
If Katello is running on a Virtual Machine, we recommend to take a snapshot prior to upgrading. Otherwise, take a backup of the relevant databases by following the instructions here.
Ensure your operating system is fully up-to-date:
NOTE: If kernel packages are updated here (e.g. upgrading el 6.6 to 6.7), you must reboot and ensure the new kernel and SELinux policy is loaded before upgrading Katello.
Update the Foreman and Katello release packages:
Clean the yum cache
Update the required packages:
The installer with the –upgrade flag will run the right database migrations for all component services, as well as adjusting the configuration to reflect what’s new in Katello 3.0
Congratulations! You have now successfully upgraded your Katello to 3.0 For a rundown of what was added, please see release notes.!
If for any reason, the above steps failed, please review /var/log/foreman-installer/katello.log – if any of the “Upgrade step” tasks failed, you may try to run them manaully below to aid in troubleshooting.