@matwolbec tutorials

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Creating a deployment file

The kubectl works with YAML definition. Create a file deployment.yaml:

touch deployment.yaml

Open it and add:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: hello-kubernetes
spec:
  selector:
    matchLabels:
      name: hello-kubernetes
  template:
    metadata:
      labels:
        name: hello-kubernetes
    spec:
      containers:
        - name: app
          image: httpd:latest
          ports:
            - containerPort: 80

Save and run:

kubectl apply -f deployment.yaml

You can check yours pods:

kubectl get pods

We didn’nt assign a public access yet, but you can run a proxy to connect and test. Get the name of the pod with the kubectl get pods and:

kubectl port-forward <name-of-your-pod> 8080:80

And access: http://localhost:8080/

It should show the message: It works!

Adding a public access with Load Balancer

Add to your deployment.yaml

---

apiVersion: v1
kind: Service
metadata:
  name: hello-kubernetes
spec:
  type: LoadBalancer
  ports:
    - port: 80
      targetPort: 80
  selector:
    name: hello-kubernetes
    

And run:

kubectl apply -f deployment.yaml

You can check your services with:

kubectl get svc

Your public IP will be shown. Access it and Voilà!

Destroying

Don’t forget to destroy your resources to avoid charges.

Run:

kubectl delete -f deployment.yaml
terraform destroy

Next steps

Go to custom application on docker.