Delete Confluent Platform Deployment using Confluent for Kubernetes

When you shut down a Confluent for Kubernetes (CFK) deployment, the components and resources must be deleted in the following order:

1. Delete the data plane (Confluent Platform)
2. Delete the control plane (CFK)

If you encounter an orphaned custom resource that are stuck in the Deleting state, see Issue: Unable to delete Kubernetes resources for the troubleshooting steps.

To delete a CFK and Confluent Platform deployment:

1. Check which of the CFK resources were deployed and locate their CRs:

   kubectl get confluent --namespace <namespace>
   

   An example output is:

   NAME                                        REPLICAS   READY   STATUS    AGE
   zookeeper.platform.confluent.io/zookeeper   3          3       RUNNING   23h
   
   NAME                                        REPLICAS   READY   STATUS    AGE
   kafka.platform.confluent.io/kafka           3          3       RUNNING   23h
   
   NAME                                        REPLICAS   READY   STATUS    AGE
   connect.platform.confluent.io/connect       2          2       RUNNING   23h
   
   NAME                                                AGE
   kafkarestclass.platform.confluent.io/krc-cfk-mtls   24h
   

2. Delete the application custom resources (CRs).

   The CFK application resources include the following:

   • ClusterLink
   • ConfluentRolebinding
   • Connector
   • KafkaTopic
   • SchemaExporter
   • Schema
   • KafkaRestClass
   
   

   Delete the resources using one of the following commands.

   • Using the CR file:

     kubectl delete -f <application CR> --namespace <namespace>
     

   • Using the resource name from Step 1:

     kubectl delete <resource name> --namespace <namespace>
     

     For example:

     kubectl delete kafkarestclass.platform.confluent.io/krc-cfk-mtls --namespace <namespace>
     

3. Delete the Confluent Platform component CRs, excluding Kafka and ZooKeeper.

   The CFK component resources include the following:

   • Connect
   • ControlCenter
   • KafkaRestProxy
   • KsqlDB
   • SchemaRegistry
   
   

   Delete the resources using one of the following commands.

   • Using the CR file:

     kubectl delete -f <component CR> --namespace <namespace>
     

   • Using the resource name from Step 1:

     kubectl delete <resource name> --namespace <namespace>
     

     For example:

     kubectl delete connect.platform.confluent.io/connect --namespace <namespace>
     

4. Delete Kafka using one of the following commands:

   kubectl delete -f <Kafka CR> --namespace <namespace>
   

   or

   kubectl delete <Kafka resource name> --namespace <namespace>
   

5. Delete ZooKeeper using one of the following commands:

   kubectl delete -f <Zookeeper CR> --namespace <namespace>
   

   or

   kubectl delete <Zookeeper resource name> --namespace <namespace>
   

6. Delete the CFK:

   1. Check the release name of your CFK:

      helm ls --namespace <namespace>
      

   2. Using the release name you retrieved in the previous step, delete the CFK:

      helm delete <CFK release name> --namespace <namespace>
      

7. Delete the namespace:

   kubectl delete namespace <namespace>