Suggest to include the command that verifies whether fencing in configured as appears here: https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/12/html-single/advanced_overcloud_customization/#review_the_prerequisites https://access.redhat.com/documentation/en-us/red_hat_openstack_platform/13/html/fast_forward_upgrades/assembly-preparing_for_openstack-platform_upgrade#annotations:b44ff18a-c74e-4ca9-93eb-700ff468a046