Skip to content

Latest commit

 

History

History
142 lines (100 loc) · 3.54 KB

Update Deployment and Service in Kubernetes.md

File metadata and controls

142 lines (100 loc) · 3.54 KB
Raw

Problem Statement

An application deployed on the Kubernetes cluster requires an update with new features developed by the Nautilus application development team. The existing setup includes a deployment named nginx-deployment and a service named nginx-service. Below are the necessary changes to be implemented without deleting the deployment and service.

  • Modify the service nodeport from 30008 to 32165

  • Change the replicas count from 1 to 5

  • Update the image from nginx:1.19 to nginx:latest

Here’s a step-by-step guide to implementing the required updates to the nginx-deployment and nginx-service:

1. Update the Service NodePort

  1. Check the Current Service Configuration:

    kubectl get service

    Output:

    NAME            TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
kubernetes      ClusterIP   10.96.0.1      <none>        443/TCP        63m
nginx-service   NodePort    10.96.54.165   <none>        80:30008/TCP   100s

  2. Update the NodePort:

    Edit the nginx-service to change the NodePort from 30008 to 32165.

    kubectl edit service nginx-service

    In the editor, locate and update the nodePort value:

    spec:
  ports:
  - port: 80
    targetPort: 80
    nodePort: 32165
    protocol: TCP

  3. Verify the Update:

    kubectl describe service nginx-service

    Output should reflect the new NodePort value:

    Name:                     nginx-service
Namespace:                default
Labels:                   <none>
Annotations:              <none>
Selector:                 app=nginx-app
Type:                     NodePort
IP Family Policy:         SingleStack
IP Families:              IPv4
IP:                       10.96.54.165
IPs:                      10.96.54.165
Port:                     <unset>  80/TCP
TargetPort:               80/TCP
NodePort:                 <unset>  32165/TCP
Endpoints:                10.244.0.5:80
Session Affinity:         None
External Traffic Policy:  Cluster
Events:                   <none>

2. Update the Deployment

  1. Check the Current Deployment Configuration:

    kubectl get deployments.apps

    Output:

    NAME               READY   UP-TO-DATE   AVAILABLE   AGE
nginx-deployment   1/1     1            1           4m37s

  2. Update the Image and Replicas:

    Edit the nginx-deployment to update the image and replicas.

    kubectl edit deployment nginx-deployment

    In the editor, make the following updates:

    • Change the image from nginx:1.19 to nginx:latest:

      spec:
  containers:
  - name: nginx
    image: nginx:latest

    • Increase the replicas from 1 to 5:

      spec:
  replicas: 5

  3. Verify the Deployment Updates:

    kubectl get deployments.apps

    Output should show the updated replicas:

    NAME               READY   UP-TO-DATE   AVAILABLE   AGE
nginx-deployment   5/5     5            5           7m6s

Final Verification

  1. Check the pods to ensure they are running:

    kubectl get pods

  2. Confirm the new NodePort is in effect by accessing the service:

    You can access the service using the new NodePort 32165 in your browser or via curl.

By following these steps, you ensure that the nginx-deployment and nginx-service are updated without deleting them.