--- upgrade: - | Adds an introspection rule to update the location of the deployment kernel registered in existing Ironic nodes. Nodes discovered on a deployment running the Train release or earlier may still be using the ``ipa.vmlinuz`` kernel, which stays unchanged when deployment images get updated. If only default introspection rules are in use, existing nodes may be updated from the Bifrost container with the following command: ``OS_CLOUD=bifrost baremetal introspection reprocess $NODE_UUID_OR_NAME`` If non-default rules are used, reprocessing may revert any customisation done by the operator. In this case, a more cautious approach is to update the deployment kernel location manually: ``OS_CLOUD=bifrost baremetal node set --driver-info deploy_kernel= $NODE_UUID_OR_NAME`` If the ``kolla_bifrost_inspector_rules`` list is customised, the rule ``inspector_rule_legacy_deploy_kernel`` should be added to it.