Prepare to delete a self-managed workload cluster

A self-managed workload cluster cannot delete itself. If your workload cluster is self-managed, you must create a bootstrap cluster and move the cluster lifecycle services to the bootstrap cluster before deleting the workload cluster.

If you did not make your workload cluster self-managed, as described in Make the New GCP Cluster Self-Managed, proceed to the Delete the workload cluster section below.

  1. Create a bootstrap cluster:

    The bootstrap cluster will host the Cluster API controllers that reconcile the cluster objects marked for deletion:

    NOTE: To avoid using the wrong kubeconfig, the following steps use explicit kubeconfig paths and contexts.

    dkp create bootstrap --with-gcp-bootstrap-credentials=true --kubeconfig $HOME/.kube/config
    CODE

    ✓ Creating a bootstrap cluster
    ✓ Initializing new CAPI components
    CODE
  2. Move the Cluster API objects from the workload to the bootstrap cluster: The cluster lifecycle services on the bootstrap cluster are ready, but the workload cluster configuration is on the workload cluster. The move command moves the configuration, which takes the form of Cluster API Custom Resource objects, from the workload to the bootstrap cluster. This process is also called a Pivot.

    dkp move capi-resources \
        --from-kubeconfig ${CLUSTER_NAME}.conf \
        --to-kubeconfig $HOME/.kube/config
    CODE
  3. Use the cluster lifecycle services on the workload cluster to check the workload cluster status:

    dkp describe cluster --kubeconfig $HOME/.kube/config -c ${CLUSTER_NAME}
    CODE

    NAME                                                                      READY  SEVERITY  REASON  SINCE  MESSAGE
    Cluster/gcp-example                                                       True                     34s
    ├─ClusterInfrastructure - GCPCluster/gcp-example
    ├─ControlPlane - KubeadmControlPlane/gcp-example-control-plane            True                     34s
    │ ├─Machine/gcp-example-control-plane-6fbzn                               True                     37s
    │ │ └─MachineInfrastructure - GCPMachine/gcp-example-control-plane-62g6s
    │ ├─Machine/gcp-example-control-plane-jf6s2                               True                     37s
    │ │ └─MachineInfrastructure - GCPMachine/gcp-example-control-plane-bsr2z
    │ └─Machine/gcp-example-control-plane-mnbfs                               True                     37s
    │   └─MachineInfrastructure - GCPMachine/gcp-example-control-plane-s8xsx
    └─Workers
      └─MachineDeployment/gcp-example-md-0                                    True                     37s
        ├─Machine/gcp-example-md-0-68b86fddb8-8glsw                           True                     37s
        │ └─MachineInfrastructure - GCPMachine/gcp-example-md-0-zls8d
        ├─Machine/gcp-example-md-0-68b86fddb8-bvbm7                           True                     37s
        │ └─MachineInfrastructure - GCPMachine/gcp-example-md-0-5zcvc
        ├─Machine/gcp-example-md-0-68b86fddb8-k9499                           True                     37s
        │ └─MachineInfrastructure - GCPMachine/gcp-example-md-0-k8h5p
        └─Machine/gcp-example-md-0-68b86fddb8-l6vfb                           True                     37s
          └─MachineInfrastructure - GCPMachine/gcp-example-md-0-9h5vn
    CODE

    NOTE: After moving the cluster lifecycle services to the workload cluster, remember to use dkp with the workload cluster kubeconfig.

    Use dkp with the bootstrap cluster to delete the workload cluster.

Delete the workload cluster

  1. Delete the Kubernetes cluster and wait a few minutes:

    Before deleting the cluster, DKP deletes all Services of type LoadBalancer on the cluster. To skip this step, use the flag --delete-kubernetes-resources=false.

    dkp delete cluster --kubeconfig $HOME/.kube/config --cluster-name ${CLUSTER_NAME}
    CODE

    ✓ Deleting Services with type LoadBalancer for Cluster default/gcp-example
    ✓ Deleting ClusterResourceSets for Cluster default/gcp-example
    ✓ Deleting cluster resources
    ✓ Waiting for cluster to be fully deleted
    Deleted default/gcp-example cluster
    CODE

    After the workload cluster is deleted, delete the bootstrap cluster.

Delete the bootstrap cluster

  1. Delete the bootstrap cluster using dkp delete:

dkp delete bootstrap --kubeconfig $HOME/.kube/config
CODE
✓ Deleting bootstrap cluster
CODE

Known Limitations

Be aware of these limitations in the current release of DKP.

The DKP version used to create the workload cluster must match the DKP version used to delete the workload cluster.