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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"

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”