* :ref:`pre-upgrade_check-ftype`: XFS ftype check
* :ref:`pre-upgrade_check-latest-packages-version`: Check if latest version of packages is installed
* :ref:`pre-upgrade_collect-flavors-and-verify-profiles`: Collect and verify role flavors
* :ref:`pre-upgrade_container-status`: Ensure container status
* :ref:`pre-upgrade_containerized-undercloud-docker`: Verify docker containers are up and ports are open
* :ref:`pre-upgrade_image-serve`: Verify image-serve service is working and answering
* :ref:`pre-upgrade_ironic-boot-configuration`: Check Ironic boot configuration
* :ref:`pre-upgrade_node-health`: Node health check
* :ref:`pre-upgrade_nova-status`: Nova Status Upgrade Check
* :ref:`pre-upgrade_openstack-endpoints`: Check connectivity to various OpenStack services
* :ref:`pre-upgrade_repos`: Check correctness of current repositories
* :ref:`pre-upgrade_service-status`: Ensure services state
* :ref:`pre-upgrade_stack-health`: Stack Health Check
* :ref:`pre-upgrade_undercloud-disk-space-pre-upgrade`: Verify undercloud fits the disk space requirements to perform an upgrade
* :ref:`pre-upgrade_undercloud-heat-purge-deleted`: Verify heat-manage purge_deleted is enabled in crontab
* :ref:`pre-upgrade_undercloud-ram`: Verify the undercloud fits the RAM requirements
* :ref:`pre-upgrade_undercloud-service-status`: Verify undercloud services state before running update or upgrade
