Blue-green deployments in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a new deployment named 'green' in Kubernetes.

Kubernetes

kubectl create deployment [1] --image=nginx:latest

Drag options to blanks, or click blank then click option'

Ared

Bgreen

Cblue

Dyellow

Attempts:

3 left

💡 Hint

Common Mistakes

Using the old deployment name 'blue' instead of 'green'.

The new deployment for the green environment should be named 'green' to distinguish it from the blue environment.

2fill in blank

medium

Complete the code to switch the service to point to the green deployment.

Kubernetes

kubectl patch service my-service -p '{"spec": {"selector": {"app": "[1]"}}}'

Drag options to blanks, or click blank then click option'

Agreen

Bblue

Cred

Dyellow

Attempts:

3 left

💡 Hint

Common Mistakes

Leaving the selector as 'blue' so traffic does not switch.

To switch traffic to the green deployment, update the service selector to 'green'.

3fill in blank

hard

Fix the error in the command to delete the old blue deployment.

Kubernetes

kubectl delete deployment [1]

Drag options to blanks, or click blank then click option'

Agreen

Byellow

Cblue

Dred

Attempts:

3 left

💡 Hint

Common Mistakes

Deleting the 'green' deployment instead of 'blue'.

To remove the old environment, delete the 'blue' deployment after switching traffic.

4fill in blank

hard

Fill both blanks to create a service that routes traffic to the blue deployment.

Kubernetes

kubectl expose deployment [1] --port=[2] --target-port=80

Drag options to blanks, or click blank then click option'

Ablue

Bgreen

C8080

D80

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong deployment name or port number.

The service should expose the 'blue' deployment on port 80 to route traffic correctly.

5fill in blank

hard

Fill all three blanks to create a deployment with label 'app=green' and image 'nginx:stable'.

Kubernetes

kubectl create deployment [1] --image=[2] --dry-run=client -o yaml | kubectl set [3] app=[1] -f - --local -o yaml

Drag options to blanks, or click blank then click option'

Agreen

Bnginx:stable

Clabel

Dblue

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong deployment name or image, or wrong kubectl command for labeling.

Create the 'green' deployment with the stable nginx image and add the label 'app=green' using 'kubectl set label'.