Create Cache Discovery Service in Openshift

For all the client applications to have access to the underlying pods, cache discovery service is created. It lets the applications communicate with the underlying pods. In order to create cache discovery service another YAML file is created with the configurations. A sample YAML file called discoveryservice.yaml is shown below.

kind: Service
apiVersion: v1          # depends on underlying Kubernetes version 
metadata:
  name: cacheserver
  labels:
    app: cacheserver
spec: 
  clusterIP: None
  sessionAffinity: ClientIP
  selector:
    app: ncache         # same label as provided in the ncache YAML file
  ports:
  - name: management-tcp
    port: 8250
    targetPort: 8250
  - name: client-port
    port: 9800
    targetPort: 9800
  - name: management-http
    port: 8251
    targetPort: 8251
  - name: management-bridge
    port: 8260
    targetPort: 8260

Using Web Console

To create the cache discovery service through web portal:

From the left panel, go to Services under the Networking section.

Create Cache Discovery Service

Click on Create Service in order to create a new cache discovery service. Click Create.

Discovery Service YAML

The cache discovery service is created successfully.

Cache Discovery service created

Using Command Line

In order to create the cache discovery service using the command line tool, run the following command:

oc create -f discoveryservice.yaml

In order to check if the service is created successfully run the following command:

oc get services

After creating the cache discovery service, the next step is to create management gateway, explained in the next chapter.

Create Cache Discovery Service in Openshift

Using Web Console

Using Command Line

See Also