nova-status¶

Upgrade¶

nova-status upgrade check

Performs a release-specific readiness check before restarting services with new code. This command expects to have complete configuration and access to databases and services within a cell. For example, this check may query the Nova API database and one or more cell databases. It may also make requests to other services such as the Placement REST API via the Keystone service catalog.

Return Codes

Return code	Description
0	All upgrade readiness checks passed successfully and there is nothing to do.
1	At least one check encountered an issue and requires further investigation. This is considered a warning but the upgrade may be OK.
2	There was an upgrade status check failure that needs to be investigated. This should be considered something that stops an upgrade.
255	An unexpected error occurred.

History of Checks

15.0.0 (Ocata)

• Checks are added for cells v2 so nova-status upgrade check should be run after running the nova-manage cell_v2 simple_cell_setup command.
• Checks are added for the Placement API such that there is an endpoint in the Keystone service catalog, the service is running and the check can make a successful request to the endpoint. The command also checks to see that there are compute node resource providers checking in with the Placement service. More information on the Placement service can be found at: https://docs.openstack.org/nova/latest/user/placement.html

16.0.0 (Pike)

• Checks for the Placement API are modified to require version 1.4, that is needed in Pike and further for nova-scheduler to work correctly.

17.0.0 (Queens)

• Checks for the Placement API are modified to require version 1.17.
• Checks that ironic instances have had their embedded flavors migrated to use custom resource classes. This check was backported from Rocky.
• Checks for nova-osapi_compute service versions that are less than 15 across all cell mappings which might cause issues when querying instances depending on how the nova-api service is configured. See https://bugs.launchpad.net/nova/+bug/1759316 for details. This check was backported from Rocky.