TerraTest: Test a Kubernetes deployment and service

In this story, we will see how to test a Kubernetes deployment and service. For that, we will use TerraTest.

Create the deployment and service manifests

Now, we will create the deployment and the service that we want to test. In first, let’s create a deployment manifest deploy.yaml:

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deploy
spec:
  selector:
    matchLabels:
      app: nginx
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: devopstestlab/nginx-helloworld
        ports:
        - containerPort: 80

Then let’s create a service manifest svc.yaml:

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

Let’s create the deployment:

kubectl apply -f deploy.yaml

The output is:

deployment.apps/nginx-deploy created

Let’s create the service:

kubectl apply -f svc.yaml

The output is:

service/nginx-svc created

Let’s check that the pod is running:

kubectl get pods