Verification and cleanup

After completing the migration from Open vSwitch (OVS) to Open Virtual Network (OVN), you must verify that the cloud is fully operational and remove temporary migration-related configurations and reference workloads. This step ensures that the environment is clean, consistent, and ready for production use.

To verify the environment and clean up migration settings:

1. Verify that the OpenStackDeployment custom resource reports status APPLIED.

2. Verify networking connectivity of reference workloads:

   • Ping the floating IP addresses directly

   • Verify workload availability in OpenStack

   • Review the OpenStack Portprober dashboard

3. If applicable, verify reference workloads access to the Metadata service by logging in to instances through SSH and running, for example:

   curl http://169.254.169.254
   

4. Remove reference workloads that were created during Prepare environment for migration.

5. Remove migration-related settings from the OpenStackDeployment custom resource. The migration utility patches this resource during its execution. After migration, delete the following keys from OpenStackDeployment:

   • From the root of spec, remove the migration:neutron:ovs_ovn_migration key.

   • From spec:services:networking, remove:

     • openvswitch:values:manifests:daemonset_ovn_controller

     • neutron:values:conf:dhcp_agent

     • neutron:values:conf:manifests:daemonset_metadata_agent

     • neutron:values:conf:manifests:deployment_server

     Example of the spec:services:networking configuration before cleanup:

     spec:
       services:
         networking:
           neutron:
             values:
               conf:
                 dhcp_agent:
                   DEFAULT:
                     dhcp_lease_duration: 259200
                     dhcp_renewal_time: 60
               manifests:
                 daemonset_metadata_agent: true
                 deployment_server: true
           openvswitch:
             values:
               manifests:
                 daemonset_ovn_controller: true
     

   • From spec:services:compute, remove:

     • libvirt:values:pod:lifecycle:upgrades:daemonsets:pod_replacement_strategy

     • nova:values:pod:lifecycle:upgrades:daemonsets:pod_replacement_strategy

     Example of the spec:services:compute configuration before cleanup:

     services:
       compute:
         libvirt:
           values:
             pod:
               lifecycle:
                 upgrades:
                   daemonsets:
                     pod_replacement_strategy: RollingUpdate
         nova:
           values:
             pod:
               lifecycle:
                 upgrades:
                   daemonsets:
                     pod_replacement_strategy: RollingUpdate
     

After completing these steps, your environment will be running with OVN in a clean state, with all temporary migration settings removed. This ensures a stable and maintainable production environment.