Monitor the cluster status until it transitions to the Running state:
kubectl get cluster pg-cluster -n demo -w
Expected Output:
NAME CLUSTER-DEFINITION TERMINATION-POLICY STATUS AGE
pg-cluster postgresql Delete Creating 50s
pg-cluster postgresql Delete Running 4m2s
Once the cluster status becomes Running, your PostgreSQL cluster is ready for use.
If you are creating the cluster for the very first time, it may take some time to pull images before running.