---
title: "Deploy counter app to EKS"
weight: 50
---

Now it's time to migrate our app to EKS.
We're going to do this in two stages.

Stage 1: First we'll move the frontend component but have it talk to the database in our old cluster.
![front-end moved to eks](/images/migrate_to_eks/front-end-moved-to-eks.png)

Stage 2: Then we'll set up the database in EKS, migrate the data, and configure the frontend to use it instead.
![database moved to eks](/images/migrate_to_eks/database-moved-to-eks.png) 
The counter app deployment and service is the same as it was in kind except we added two environment varibles for the `DB_HOST` and `DB_PORT` and the service type is LoadBalancer instead of NodePort.

```bash
cat <<EOF | kubectl apply -f - 
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: counter
  labels:
    app: counter
spec:
  replicas: 2
  selector:
    matchLabels:
      app: counter
  template:
    metadata:
      labels:
        app: counter
    spec:
      containers:
      - name: counter
        image: public.ecr.aws/aws-containers/stateful-counter:latest
        env:
        - name: DB_HOST
          value: $IP
        - name: DB_PORT
          value: "30001"
        ports:
        - containerPort: 8000
        resources:
          requests:
            memory: "16Mi"
            cpu: "100m"
          limits:
            memory: "128Mi"
            cpu: "500m"
---
apiVersion: v1
kind: Service
metadata:
  name: counter
spec:
  ports:
    - port: 80
      targetPort: 8000
  type: LoadBalancer
  selector:
    app: counter
EOF
```

Now create a postgres-external service in kind that exposes postgres on a NodePort.

```bash
cat <<EOF | kubectl --context kind-kind apply -f - 
---
apiVersion: v1
kind: Service
metadata:
  name: postgres-external
  labels:
    app: postgres
spec:
  type: NodePort
  ports:
    - port: 5432
      nodePort: 30001
  selector:
   app: postgres
EOF
```

Now you should be able to get the endpoint for your load balancer and when you load the counter app the same count will be shown in the app.

```bash
kubectl get svc
```