Chapter 2. Getting started with Infinispan CR

Procedure

1. Specify the number of Data Grid pods in the cluster with spec.replicas in your Infinispan CR.

   For example, create a cr_minimal.yaml file as follows:

   $ cat > cr_minimal.yaml<<EOF
   apiVersion: infinispan.org/v1
   kind: Infinispan
   metadata:
     name: example-infinispan
   spec:
     replicas: 2
   EOF

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2. Apply your Infinispan CR.

   $ oc apply -f cr_minimal.yaml

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3. Watch Data Grid Operator create the Data Grid pods.

   $ oc get pods -w
   
   NAME                        READY  STATUS              RESTARTS   AGE
   example-infinispan-1        0/1    ContainerCreating   0          4s
   example-infinispan-2        0/1    ContainerCreating   0          4s
   example-infinispan-3        0/1    ContainerCreating   0          5s
   infinispan-operator-0       1/1    Running             0          3m
   example-infinispan-3        1/1    Running             0          8s
   example-infinispan-2        1/1    Running             0          8s
   example-infinispan-1        1/1    Running             0          8s

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Procedure

1. Change the spec.replicas field to 0 to stop the Data Grid cluster.

   spec:
     replicas: 0

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2. Ensure you have the correct number of pods before you restart the cluster.

   $ oc get infinispan example-infinispan -o=jsonpath='{.status.replicasWantedAtRestart}'

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3. Change the spec.replicas field to the same number of pods to restart the Data Grid cluster.

   spec:
     replicas: 6

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