第3章 Performing pre-upgrade actions


Perform pre-upgrade actions to ensure that your Red Hat OpenStack Platform environment is ready to be upgraded and to avoid potential issues during the upgrade.

For more information about additional pre-upgrade checks to perform on the undercloud, see the Pre-upgrade Checks section in the Red Hat Knowledgebase article FFU 16.2 - 17.1. Undercloud Upgrade Checks.

3.1. Checking the health of the OVN cluster

Before you upgrade your environment, validate that the OVN cluster is healthy. If the output from the overcloud Controller node shows the ovndb_servers resource in Failed Resource Actions, you must resolve this issue to avoid a data plane failure during the upgrade.

Procedure

  1. Check the status of the OVN cluster resources and fix any issues:

    $ sudo pcs status
    注記

    If you need help resolving any issues, contact Red Hat Support before you proceed with the upgrade.

  2. Check in the Failed Resource Actions section of the output of the OVN cluster resources status for the following error:

    Failed Resource Actions:
      * ovndb_servers_monitor_30000 on ovn-dbs-bundle-1 'not running' (7): call=24, status='complete', exitreason='', last-rc-change='2025-08-08 09:21:30Z', queued=0ms, exec=159ms
  3. If you see the error, check the status of the ovndb_servers resource on controller-0:

    $ sudo podman exec <ovn-dbs container> ovs-appctl -t /var/run/openvswitch/ovnnb_db.ctl ovsdb-server/sync-status
    • Replace <ovn-dbs container> with the name of the ovn-dbs container that you want to check.
  4. If the output includes a reference to the IP address, 192.0.2.254, instead of the virtual IP address, you must restart the ovn-dbs-bundle on the overcloud Controller node:

    $ sudo pcs resource restart ovn-dbs-bundle

    192.0.2.254 is a fallback IP address. Its presence in the output indicates that there is an issue.

Verification

  • Check the status of the OVN cluster resources and confirm that the Failed Resource Actions error is gone:

    $ sudo pcs status
    $ sudo podman exec <ovn-dbs container> ovs-appctl -t /var/run/openvswitch/ovnnb_db.ctl ovsdb-server/sync-status

    If the error is still there, contact Red Hat Support for assistance.

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