Remove stale resources of a cluster

Depending on how you uninstalled the PDS system, there might be stale PDS resources in the deployment target cluster. This topic provides commands to list and delete the stale resources.

Data service deployments

List resources:

for CRD in $(kubectl api-resources --api-group=deployments.pds.io -o name); do
    echo "Resources $CRD:"
    kubectl get -A $CRD
done

Delete resources:

for NS in $(kubectl get ns -o jsonpath="{.items[*].metadata.name}"); do
    for NAME in $(kubectl -n $NS get database.deployments.pds.io -o name); do
        kubectl patch -n $NS $NAME --type=merge -p `{"metadata":{"finalizers":null}}`
    done
done

kubectl delete crd $(kubectl api-resources --api-group=deployments.pds.io -o name | tr '\n' ' ') --wait

Backups

Before you delete the backups, ensure you have a copy of data residing in backup targets associated with the backup custom resources.

List resources:
```
kubectl get -A backups.backups.pds.io
```

Delete resources:

for NS in $(kubectl get ns -o jsonpath="{.items[*].metadata.name}"); do
    for NAME in $(kubectl -n $NS get backups.backups.pds.io -o name); do
        kubectl patch -n $NS $NAME --type=merge -p `{"metadata":{"finalizers":null}}`
    done
done

kubectl delete crd backups.backups.pds.io --wait

Cluster roles and role bindings

List resources:

kubectl get clusterrole -l pds/environment
kubectl get clusterrolebinding -l pds/environment

Delete resources:

kubectl delete clusterrole -l pds/environment
kubectl delete clusterrolebinding -l pds/environment

Storage classes

List resources:

kubectl get storageclass -l pds/environment

Delete resources:

kubectl delete storageclass -l pds/environment

Data volumes

List resources:

kubectl get pvc -A -l pds/environment
kubectl get pv $(kubectl get pvc -A -l pds/environment -o=jsonpath=`{.items[*].spec.volumeName}`)

Delete resources:

for PV in $(kubectl get pvc -A -l pds/environment -o=jsonpath=`{.items[*].spec.volumeName}`); do
    kubectl patch pv $PV -p `{"spec":{"persistentVolumeReclaimPolicy":"Delete"}}`
done

kubectl delete pvc -A -l pds/environment

Review remaining volumes and delete unreleased volumes:
```
kubectl get pv
```

Remove a Kubernetes cluster and keep data