The importance of upgrading Red Hat OpenStack Platform on all overcloud nodes at once

You should upgrade Red Hat OpenStack Platform (RHOSP) on all of your overcloud nodes at the same time instead of upgrading the nodes in batches. During the RHOSP upgrade on the overcloud nodes, the following significant actions occur:

• This process only updates the RHOSP containers and packages. The Red Hat Enterprise Linux system upgrade occurs after the RHOSP upgrade.
• Th...