If you upgrade to Red Hat OpenStack Platform 13 from previous versions, you must manually disable Instance HA before you upgrade. This includes major and minor upgrades, as well as fast-forward upgrades.

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

stack@director $ ansible-playbook /home/stack/ansible-instanceha/playbooks/overcloud-instance-ha.yml \
-e release="rhos-12" -e instance_ha_action="uninstall"

If you used the stonith_devices option when you enabled Instance HA, you need to specify this option when you disable Instance HA. For example, if your Instance HA configuration excludes STONITH devices, use the following command syntax:

stack@director $ ansible-playbook /home/stack/ansible-instanceha/playbooks/overcloud-instance-ha.yml \
-e release="rhos-12" -e instance_ha_action="uninstall" -e stonith_devices=”none”