Delete Cluster

Delete the Kubernetes cluster and clean up your environment

Prepare to delete a self-managed workload cluster

NOTE: 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 New Cluster Self-Managed, see Delete the workload cluster.

  1. Create a bootstrap cluster:

    The bootstrap cluster hosts 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 --kubeconfig $HOME/.kube/config

    The output appears similar to:

    INFO[2021-11-23T15:54:07-08:00] Creating bootstrap cluster                    src="bootstrap/bootstrap.go:148"
    INFO[2021-11-23T15:55:01-08:00] Initializing bootstrap controllers            src="bootstrap/controllers.go:94"
    INFO[2021-11-23T15:56:05-08:00] Created bootstrap controllers                 src="bootstrap/controllers.go:106"
    INFO[2021-11-23T15:56:05-08:00] Bootstrap controllers are ready               src="bootstrap/controllers.go:110"
    INFO[2021-11-23T15:56:05-08:00] Initializing Tigera operator                  src="bootstrap/clusterresourceset.go:37"
    INFO[2021-11-23T15:56:05-08:00] Created/Updated Tigera operator               src="bootstrap/clusterresourceset.go:42"
    INFO[2021-11-23T15:56:05-08:00] Initializing AWS EBS CSI CustomResourceSet    src="bootstrap/clusterresourceset.go:95"
    INFO[2021-11-23T15:56:05-08:00] Created/Updated AWS EBS CSI CustomResourceSet  src="bootstrap/clusterresourceset.go:100"
    INFO[2021-11-23T15:56:05-08:00] Initializing Azure Disk CSI CustomResourceSet  src="bootstrap/clusterresourceset.go:102"
    INFO[2021-11-23T15:56:05-08:00] Created Azure Disk CustomResourceSet          src="bootstrap/clusterresourceset.go:107"
    INFO[2021-11-23T15:56:05-08:00] Initializing Local Volume Provisioner CustomResourceSet  src="bootstrap/clusterresourceset.go:109"
    INFO[2021-11-23T15:56:05-08:00] Created/Updated Local Volume Provisioner CustomResourceSet  src="bootstrap/clusterresourceset.go:114"
    INFO[2021-11-23T15:56:05-08:00] Initializing Cluster Autoscaler CustomResourceSet  src="bootstrap/clusterresourceset.go:181"
    INFO[2021-11-23T15:56:05-08:00] Created/Updated Cluster Autoscaler CustomResourceSet  src="bootstrap/clusterresourceset.go:186"
    INFO[2021-11-23T15:56:05-08:00] Initializing Node Feature Discovery CustomResourceSet  src="bootstrap/clusterresourceset.go:239"
    INFO[2021-11-23T15:56:05-08:00] Created/Updated Node Feature Discovery CustomResourceSet  src="bootstrap/clusterresourceset.go:244"
    INFO[2021-11-23T15:56:06-08:00] Initializing NVIDIA GPU Feature Discovery CustomResourceSet  src="bootstrap/clusterresourceset.go:297"
    INFO[2021-11-23T15:56:06-08:00] Created/Updated NVIDIA GPU Feature Discovery CustomResourceSet  src="bootstrap/clusterresourceset.go:302"
  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 \
        --from-kubeconfig ${CLUSTER_NAME}.conf \
        --from-context konvoy-${CLUSTER_NAME}-admin@konvoy-${CLUSTER_NAME} \
        --to-kubeconfig $HOME/.kube/config \
        --to-context kind-konvoy-capi-bootstrapper

    The output appears similar to:

    INFO[2021-06-09T11:47:11-07:00] Running pivot command                         fromClusterKubeconfig=azure-example.conf fromClusterContext= src="move/move.go:83" toClusterKubeconfig=/home/clusteradmin/.kube/config toClusterContext=
    INFO[2021-06-09T11:47:36-07:00] Pivot operation complete.                     src="move/move.go:108"
    INFO[2021-06-09T11:47:36-07:00] You can now view resources in the moved cluster by using the --kubeconfig flag with kubectl. For example: kubectl --kubeconfig=/home/clusteradmin/.kube/config get nodes  src="move/move.go:155"
  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}

    The output appears similar to:

    NAME                                                                       READY  SEVERITY  REASON  SINCE  MESSAGE
    /my-azure-cluster                                                    True                     6m37s
    ├─ClusterInfrastructure - AzureCluster/my-azure-cluster              True                     13m
    ├─ControlPlane - KubeadmControlPlane/my-azure-cluster-control-plane  True                     6m37s
    │ └─3 Machines...                                                    True                     10m    See my-azure-cluster-control-plane-bmc9b, my-azure-cluster-control-plane-msftd, ...
    └─MachineDeployment/my-azure-cluster-md-0                            True                     7m58s
    └─4 Machines...                                                      True                     8m10s  See my-azure-cluster-md-0-84bd8b5f5b-b8cnq, my-azure-cluster-md-0-84bd8b5f5b-j8ldg, ...

    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.

  4. Wait for the cluster control-plane to be ready:

    kubectl --kubeconfig $HOME/.kube/config wait --for=condition=controlplaneready "clusters/${CLUSTER_NAME}" --timeout=60m

    The output appears similar to: condition met

Delete the workload cluster

  1. Make sure your Azure credentials are up-to-date. Refresh the credentials using this command:

    dkp update bootstrap credentials azure --kubeconfig $HOME/.kube/config
  2. 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 --cluster-name=${CLUSTER_NAME} --kubeconfig $HOME/.kube/config

    The output appears similar to:

    INFO[2021-06-09T11:53:42-07:00] Running cluster delete command                clusterName=my-azure-example managementClusterKubeconfig= namespace=default src="cluster/delete.go:95"
    INFO[2021-06-09T11:53:42-07:00] Waiting for cluster to be fully deleted       src="cluster/delete.go:123"
    INFO[2021-06-09T12:14:03-07:00] Deleted default/my-azure-example cluster  src="cluster/delete.go:129"

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

Delete the bootstrap cluster

dkp delete bootstrap --kubeconfig $HOME/.kube/config

The output appears similar to:

INFO[2021-06-09T12:15:20-07:00] Deleting bootstrap cluster                    src="bootstrap/bootstrap.go:182"

Known Limitations

NOTE: Be aware of these limitations in the current release of Konvoy.

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