Why container orchestration matters in Kubernetes - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a Kubernetes Pod manifest with one container.

Kubernetes

apiVersion: v1
kind: Pod
metadata:
  name: my-pod
spec:
  containers:
  - name: my-container
    image: [1]

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

Adocker run nginx

Bnginx:latest

Ckubectl apply

Dpodman run

Attempts:

3 left

💡 Hint

Common Mistakes

Using commands instead of image names

Leaving the image field empty

The image field requires the container image name, like nginx:latest. Commands like docker run or kubectl apply are not valid here.

2fill in blank

medium

Complete the command to deploy a Kubernetes manifest file named app.yaml.

Kubernetes

kubectl [1] -f app.yaml

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Aapply

Bdelete

Crun

Dbuild

Attempts:

3 left

💡 Hint

Common Mistakes

Using kubectl run which creates a pod directly

Using kubectl delete which removes resources

The kubectl apply command applies the configuration in the manifest file to the cluster, creating or updating resources.

3fill in blank

hard

Fix the error in the command to list all pods in all namespaces.

Kubernetes

kubectl get pods [1]

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A-a

B--namespace=all

C--all-namespaces

D--all

Attempts:

3 left

💡 Hint

Common Mistakes

Using -a which is not valid for namespaces

Using --namespace=all which is invalid

The correct flag to list pods across all namespaces is --all-namespaces. Other options are invalid or do not work as expected.

4fill in blank

hard

Fill both blanks to create a Deployment manifest with 3 replicas of an nginx container.

Kubernetes

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
spec:
  replicas: [1]
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: [2]

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A3

Bnginx:1.21

Cnginx:latest

D1

Attempts:

3 left

💡 Hint

Common Mistakes

Using 1 replica instead of 3

Using invalid image tags

The replicas field should be set to 3 to run three pods. The image should be a valid container image like nginx:latest.

5fill in blank

hard

Fill all three blanks to create a Service manifest exposing port 80 for the nginx Deployment.

Kubernetes

apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  selector:
    app: [1]
  ports:
  - protocol: TCP
    port: [2]
    targetPort: [3]

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

Anginx

B80

Dhttp

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong selector label

Using string 'http' instead of port number

The selector should match the label app: nginx. The port and targetPort should both be set to 80 to expose the nginx container's port.