Migrating existing workbench and workload resources
When a workbench upgrade is triggered, the existing ingress resources are deleted, and new Gateway API resources are created.
Pre-migration steps
Before the migration, Administrators must complete the following steps:
- Identify any applications using a restricted subdomain.
- Rename the application's subdomain to a non-conflicting value.
- Update and redeploy any clients that rely on the old URL.
Migration
As part of the upgrade process, a migration job is automatically initiated to convert any existing Ingress objects into Gateway API resources for existing workloads.
Post-migration steps
The listed post-migration activities are only necessary if a migration issue is identified or if a restricted application subdomain name has been used.
- Modify the application's subdomain name.
- Manually adjust the hostname in the
XListenerSetorHTTPRoute. - Restart the
istioddeployment by running the following command:kubectl rollout status deployment/istiod -n istio-system
