RHV: Upgrading host documentation is missing a step to put the host into maintenance and removing it.

Issue

• In the documentation on upgrading Hosts, seems to be missing the step.

• The documentation has the following procedure:

  1. Pick a host to upgrade and migrate that host’s virtual machines to another host in the same cluster. You can use Live Migration to minimize virtual machine downtime. For more information, see Migrating Virtual Machines Between Hosts in the Virtual Machine Management Guide for more information.

  2. Install Red Hat Enterprise Linux 8.2 or later, or RHVH 4.4. For more information, see Installing Hosts for Red Hat Virtualization in one of the Installing Red Hat Virtualization guides for more information.

  3. Install the appropriate packages to enable the host for RHV 4.4. For more information, see Installing Hosts for Red Hat Virtualization in one of the Installing Red Hat Virtualization guides for more information.

  4. Add this host to the Manager, assigning it to the same cluster. You can now migrate virtual machines onto this host. For more information, see Adding Standard Hosts to the Manager in one of the Installing Red Hat Virtualization guides for more information.

• After the step 1 above, the host that was picked for upgrade should be put into maintenance and removed.