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Kubernetes Deployments with YAML on AWS EKS

Deployments with YAML¶

Step-01: Copy templates from ReplicaSet¶

Copy templates from ReplicaSet and change the kind: Deployment
Update Container Image version to 3.0.0
Update NodePort service nodePort: 31233
Change all names to Deployment
Change all labels and selectors to myapp3

01-kube-base-definition.yml02-deployment-definition.yml03-deployment-nodeport-servie.yml

apiVersion:
kind:
metadata:

spec:

apiVersion: apps/v1
kind: Deployment
metadata:
name: myapp3-deployment
spec:
replicas: 3
selector:
    matchLabels:
    app: myapp3
template: 
    metadata: # Dictionary
    name: myapp3-pod
    labels: # Dictionary 
        app: myapp3         
    spec:
    containers: # List
        - name: myapp3-container
        image: stacksimplify/kubenginx:3.0.0
        ports:
            - containerPort: 80

apiVersion: v1
kind: Service
metadata:
name: deployment-nodeport-service
spec:
type: NodePort 
selector: 
    app: myapp3
ports: 
    - name: http
    port: 80
    targetPort: 80
    nodePort: 31233

# Create Deployment
kubectl apply -f 02-deployment-definition.yml
kubectl get deploy
kubectl get rs
kubectl get po

# Create NodePort Service
kubectl apply -f 03-deployment-nodeport-service.yml

# List Service
kubectl get svc

# Get Public IP
kubectl get nodes -o wide

# Access Application
http://<Worker-Node-Public-IP>:31233

API References¶

Deployment: https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.18/#deployment-v1-apps

AWS EKS - Elastic Kubernetes Service - Masterclass¶