Part2: Deploying a gaming application on an EKS cluster with ingress controller

In the previous blog, we created an EKS cluster with the fargate profile required to deploy the application. In this blog, we shall proceed and deploy the gaming application in this cluster via k8s resources.

1. We had already created a Fargate profile in the last blog in the namespace game-2018. We shall now move on to creating the namespace in the actual EKS cluster through the below manifest.

    apiVersion: v1
    kind: Namespace
    metadata:
      name: game-2048
   

   

2. Create the deployment file with 3 replicasets. The docker image used here is from a public docker hub repository.

    apiVersion: apps/v1
    kind: Deployment
    metadata:
      name: gaming-deployment
      namespace: game-2048
      labels:
        app: gaming
    spec:
      replicas: 3
      selector:
        matchLabels:
          app: gaming
      template:
        metadata:
          labels:
            app: gaming
        spec:
          containers:
          - name: gaming2048
            image: public.ecr.aws/l6m2t8p7/docker-2048:latest
            imagePullPolicy: Always
            ports:
            - containerPort: 80
   

   

3. Next, create and apply service

    apiVersion: v1
    kind: Service
    metadata:
      name: my-service
      namespace: game-2048
    spec:
      type: NodePort
      selector:
        app: gaming
      ports:
        - port: 80
          targetPort: 80
          nodePort: 30007
          protocol: TCP
   

   

4. Create and apply ingress resource

    apiVersion: networking.k8s.io/v1
    kind: Ingress
    metadata:
      name: ingress-2048
      namespace: game-2048
      annotations:
        alb.ingress.kubernetes.io/scheme: internet-facing
        alb.ingress.kubernetes.io/target-type: ip
    spec:
      ingressClassName: alb
      rules:
      - http:
          paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: my-service
                port:
                  number: 80
   

   

5. Now, we have created all the required k8s resources for the application to be running. Let us check for the status of this on EKS cluster via the command kubectl get all -n game-2048

   

   

We can see that all the pods are in a running state and this aplication can be accessed through node's IP adress. However, the external IP address is not allocated meaning this application cannnot be accessed by the external world or any end user

Although we have already created an ingress resource, a controller is needed which can look into this ingress resource and create a load balanacer through which our application can be accessed by an end user.

So, in the next blog we will be creating an application load balancer with ingress controller and accessing this application via load balancer's DNS.