Delete a PostgreSQL Cluster
note
The termination policy determines how a cluster is deleted.
Termination policy
| terminationPolicy | Deleting Operation |
|---|---|
DoNotTerminate | DoNotTerminate blocks delete operation. |
Halt | Halt deletes Cluster resources like Pods and Services but retains Persistent Volume Claims (PVCs), allowing for data preservation while stopping other operations. Halt policy is deprecated in v0.9.1 and will have same meaning as DoNotTerminate. |
Delete | Delete extends the Halt policy by also removing PVCs, leading to a thorough cleanup while removing all persistent data. |
WipeOut | WipeOut deletes all Cluster resources, including volume snapshots and backups in external storage. This results in complete data removal and should be used cautiously, especially in non-production environments, to avoid irreversible data loss. |
To check the termination policy, execute the following command.
- kbcli
- kubectl
kbcli cluster list mycluster -n demo
>
NAME NAMESPACE CLUSTER-DEFINITION VERSION TERMINATION-POLICY STATUS CREATED-TIME
mycluster demo postgresql postgresql-14.8.0 Delete Running Sep 28,2024 16:47 UTC+0800
kubectl -n demo get cluster mycluster
>
NAME CLUSTER-DEFINITION VERSION TERMINATION-POLICY STATUS AGE
mycluster postgresql postgresql-14.8.0 Delete Running 29m
Step
Run the command below to delete a specified cluster.
- kbcli
- kubectl
kbcli cluster delete mycluster -n demo
kubectl delete cluster mycluster -n demo
If you want to delete a cluster and its all related resources, you can modify the termination policy to WipeOut, and then delete the cluster.
kubectl patch -n demo cluster mycluster -p '{"spec":{"terminationPolicy":"WipeOut"}}' --type="merge"
kubectl delete -n demo cluster mycluster