Kubernetes Lab 8 - Services

Problem¶

We have a jedi-deployment and yoda-deployment that need to communicate with others. The jedi needs to talk to the world(outside the cluster), while yoda only needs to talk to jedi council(others in the cluster).

Solution¶

• Examine the two deployments, and create two services that meet the following criteria:

jedi-svc - The service name is jedi-svc. - The service exposes the pod replicas managed by the deployment named jedi-deployment. - The service listens on port 80 and its targetPort matches the port exposed by the pods. - The service type is NodePort.

yoda-svc - The service name is yoda-svc. - The service exposes the pod replicas managed by the deployment named yoda-deployment. - The service listens on port 80 and its targetPort matches the port exposed by the pods. - The service type is ClusterIP.

Setup environment:¶

• Execute the command to create the deployments using below definition.

shell script kubectl apply -f https://gist.githubusercontent.com/csantanapr/87df4292e94441617707dae5de488cf4/raw/cb515f7bae77a3f0e76fdc7f6aa0f4e89cc5fec7/lab-8-service-setup.yaml - Create two services jedi-svc & yoda-svc using below yam definition.

```yaml
apiVersion: v1
kind: Service
metadata:
name: jedi-svc
spec:
type: NodePort
selector:
    app: jedi
ports:
- protocol: TCP
    port: 80
    targetPort: 8080
```

```yaml
apiVersion: v1
kind: Service
metadata:
name: yoda-svc
spec:
type: ClusterIP
selector:
    app: yoda
ports:
- protocol: TCP
    port: 80
    targetPort: 8080
```

• Execute the below commands to creating services.

shell script oc apply -f jedi-svc.yaml -n {DEV_NAMESPACE} oc apply -f oda-svc.yaml -n {DEV_NAMESPACE}