Scale a Hazelcast deployment

To scale an existing Hazelcast deployment, there are two options:

• Modify the YAML definition you used to deploy Hazelcast cluster by updating clusterSize field and re-apply it again:

  For example, if the existing configuration has a cluster size of three:

  yaml

  apiVersion: hazelcast.com/v1alpha1
  kind: Hazelcast
  metadata:
    name: hazelcast-sample
  spec:
    clusterSize: 3

  You can scale your deployment to five replicas by updating the clusterSize field and applying:

  yaml

  apiVersion: hazelcast.com/v1alpha1
  kind: Hazelcast
  metadata:
    name: hazelcast-sample
  spec:
    clusterSize: 5

For Kubernetes

shell

kubectl apply -f hazelcast-sample.yaml

For Openshift

shell

oc apply -f hazelcast-sample.yaml

• Alternatively, you can use the scale command:

  shell

  kubectl scale hazelcast <name> --replicas <replica-count>

  For example:

  shell

  kubectl scale hazelcast hazelcast-sample --replicas 5

Check the cluster status

You can check that the operation has completed by checking the cluster status:

Kubernetes

shell

kubectl get hazelcast

Openshift

shell

oc get hazelcast

NAME               STATUS    MEMBERS
hazelcast-sample   Running   5/5