Red Hat Summit Red Hat SummitSupportConsoleDevelopersStart a trialContact

Chapter 5. Rollback

When Instance HA is enabled, upgrade or scale-up operations are not possible. Any attempts to do so will fail. This includes both minor and major upgrades. Before upgrading or scaling your overcloud, disable Instance HA first.

To disable Instance HA, run the following as the stack user on the undercloud: 

stack@director $ ansible-playbook /home/stack/ansible-instanceha/playbooks/overcloud-instance-ha.yml \
-e release="RELEASE" -e instance_ha_action="uninstall"
Copy to Clipboard Toggle word wrap

Replace RELEASE with the corresponding code for your version of Red Hat OpenStack Platform — namely, rhos-8.

If you used the stonith_devices option when you enabled Instance HA , you need to specify the same option during rollback. For example, if your Instance HA configuration has STONITH disabled (as in Section 3.3, “Enabling Instance HA”), use: 

stack@director $ ansible-playbook /home/stack/ansible-instanceha/playbooks/overcloud-instance-ha.yml \
-e release="RELEASE" -e instance_ha_action="uninstall"  -e stonith_devices=”none”
Copy to Clipboard Toggle word wrap
Red Hat logoGithubredditYoutubeTwitter

Learn

Try, buy, & sell

Communities

About Red Hat Documentation

We help Red Hat users innovate and achieve their goals with our products and services with content they can trust. Explore our recent updates.

Making open source more inclusive

Red Hat is committed to replacing problematic language in our code, documentation, and web properties. For more details, see the Red Hat Blog.

About Red Hat

We deliver hardened solutions that make it easier for enterprises to work across platforms and environments, from the core datacenter to the network edge.

Theme

© 2026 Red HatBack to top