Matt Riedemann
7eb6703521
In Pike we started requiring that ironic instances have their embedded flavor migrated to track the ironic node custom resource class. This can be done either via the normal running of the nova-compute service and ironic driver or via the 'nova-manage db ironic_flavor_migration' command. This change adds a nova-status check to see if there are any unmigrated ironic instances across all non-cell0 cells, and is based mostly on the same logic within the nova-manage command except it's multi-cell aware and doesn't use the objects. Change-Id: Ifd22325e849db2353b1b1eedfe998e3d6a79591c
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===========
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nova-status
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===========
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--------------------------------------
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CLI interface for nova status commands
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--------------------------------------
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:Author: openstack@lists.openstack.org
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:Copyright: OpenStack Foundation
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:Manual section: 1
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:Manual group: cloud computing
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Synopsis
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========
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::
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nova-status <category> <action> [<args>]
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Description
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===========
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`nova-status` is a tool that provides routines for checking the status of a
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Nova deployment.
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Options
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=======
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The standard pattern for executing a `nova-status` command is::
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nova-status <category> <command> [<args>]
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Run without arguments to see a list of available command categories::
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nova-status
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Categories are:
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* ``upgrade``
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Detailed descriptions are below.
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You can also run with a category argument such as ``upgrade`` to see a list of
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all commands in that category::
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nova-status upgrade
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These sections describe the available categories and arguments for
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`nova-status`.
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Upgrade
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~~~~~~~
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``nova-status upgrade check``
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Performs a release-specific readiness check before restarting services with
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new code. This command expects to have complete configuration and access
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to databases and services within a cell. For example, this check may query
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the Nova API database and one or more cell databases. It may also make
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requests to other services such as the Placement REST API via the Keystone
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service catalog.
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**Return Codes**
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.. list-table::
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:widths: 20 80
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:header-rows: 1
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* - Return code
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- Description
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* - 0
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- All upgrade readiness checks passed successfully and there is nothing
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to do.
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* - 1
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- At least one check encountered an issue and requires further
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investigation. This is considered a warning but the upgrade may be OK.
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* - 2
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- There was an upgrade status check failure that needs to be
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investigated. This should be considered something that stops an
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upgrade.
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* - 255
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- An unexpected error occurred.
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**History of Checks**
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**15.0.0 (Ocata)**
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* Checks are added for cells v2 so ``nova-status upgrade check`` should be
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run *after* running the ``nova-manage cell_v2 simple_cell_setup``
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command.
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* Checks are added for the Placement API such that there is an endpoint in
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the Keystone service catalog, the service is running and the check can
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make a successful request to the endpoint. The command also checks to
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see that there are compute node resource providers checking in with the
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Placement service. More information on the Placement service can be found
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at: `<https://docs.openstack.org/nova/latest/user/placement.html>`_
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**16.0.0 (Pike)**
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* Checks for the Placement API are modified to require version 1.4, that
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is needed in Pike and further for nova-scheduler to work correctly.
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**17.0.0 (Queens)**
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* Checks for the Placement API are modified to require version 1.17.
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**18.0.0 (Rocky)**
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* Checks for the Placement API are modified to require version 1.21.
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* Checks that ironic instances have had their embedded flavors migrated to
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use custom resource classes.
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See Also
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========
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* OpenStack Nova Docs: `<https://docs.openstack.org/nova/latest/>`_
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Bugs
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====
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* Nova bugs are managed at `Launchpad <https://bugs.launchpad.net/nova>`_
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