---
title: Migrating FRR-K8s resources
---

# Migrating FRR-K8s resources {#migrating-frr-k8s-resources}

Migrating FRR-K8s custom resources is required when upgrading from OpenShift Container Platform 4.17 or earlier with the MetalLB Operator deployed. Existing FRRConfiguration resources in the `metallb-system` namespace must be moved to the `openshift-frr-k8s` namespace to align with the updated architecture. Learn how to migrate these resources using the CLI and how to verify that the migration completed successfully.

All user-created FRR-K8s custom resources (CRs) in the `metallb-system` namespace under OpenShift Container Platform 4.17 and earlier releases must be migrated to the `openshift-frr-k8s` namespace. As a cluster administrator, you can migrate your FRR-K8s custom resources to the `openshift-frr-k8s` namespace using the CLI.

## Migrating FRR-K8s resources {#nw-bgp-frr-k8s-migration_migrating-frr-k8s-resources}

You can migrate the FRR-K8s `FRRConfiguration` custom resources from the `metallb-system` namespace to the `openshift-frr-k8s` namespace.

When upgrading from an earlier version of OpenShift Container Platform with the Metal LB Operator deployed, you must manually migrate your custom `FRRConfiguration` configurations from the `metallb-system` namespace to the `openshift-frr-k8s` namespace.

**Prerequisites**

- You have installed the OpenShift CLI (`oc`).
- You are logged in to the cluster as a user with the `cluster-admin` role.

**Procedure**

1. To create the `openshift-frr-k8s` namespace, enter the following command:

   ```terminal
   $ oc create namespace openshift-frr-k8s
   ```
2. To automate the migration, create a shell script named `migrate.sh` with the following contents:

   ```bash
   #!/bin/bash
   OLD_NAMESPACE="metallb-system"
   NEW_NAMESPACE="openshift-frr-k8s"
   FILTER_OUT="metallb-"
   oc get frrconfigurations.frrk8s.metallb.io -n "${OLD_NAMESPACE}" -o json |\
     jq -r '.items[] | select(.metadata.name | test("'"${FILTER_OUT}"'") | not)' |\
     jq -r '.metadata.namespace = "'"${NEW_NAMESPACE}"'"' |\
     oc create -f -
   ```
3. To execute the migration, run the following command:

   ```terminal
   $ bash migrate.sh
   ```

**Verification**

- To confirm that the migration succeeded, run the following command:

  ```terminal
  $ oc get frrconfigurations.frrk8s.metallb.io -n openshift-frr-k8s
  ```

After the migration is complete, you can remove the `FRRConfiguration` custom resources from the `metallb-system` namespace.