Overview:

Kubernetes allows you to update your application without downtime using rolling updates. If an update fails, you can roll back to a previous version.

Rolling Updates:

1. Update the Deployment:

   • Edit the Deployment YAML file to use a new container image. Example:

     containers:
     - name: my-app
       image: nginx:1.19

   • Apply the updated Deployment:

     kubectl apply -f deployment.yaml

2. Monitor the Update:

   kubectl rollout status deployment my-app-deployment

Rollbacks:

1. Roll Back to a Previous Version:

   kubectl rollout undo deployment my-app-deployment

2. Check Deployment History:

   kubectl rollout history deployment my-app-deployment

Activity:

Perform a rolling update for your Nginx Deployment to a different version. If the update fails, roll back to the previous version.