ReplicaSet definition in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the kind of Kubernetes object.

Kubernetes

apiVersion: apps/v1
kind: [1]
metadata:
  name: my-replicaset

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APod

BDeployment

CReplicaSet

DService

Attempts:

3 left

💡 Hint

Common Mistakes

Using Deployment instead of ReplicaSet

Using Pod or Service as kind

The kind field specifies the type of Kubernetes object. For a ReplicaSet, it must be ReplicaSet.

2fill in blank

medium

Complete the code to set the number of pod replicas.

Kubernetes

spec:
  replicas: [1]

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A0

B-1

Cabc

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Setting replicas to zero or negative numbers

Using non-numeric values

The replicas field sets how many pod copies the ReplicaSet should maintain. It must be a positive integer like 3.

3fill in blank

hard

Fix the error in the selector field to match the pod labels.

Kubernetes

spec:
  selector:
    matchLabels:
      app: [1]

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Afrontend

Bbackend

Cdatabase

Dcache

Attempts:

3 left

💡 Hint

Common Mistakes

Using a label that does not match pod labels

Typos in label values

The selector must match the labels of the pods the ReplicaSet manages. Here, the pods have label app: frontend.

4fill in blank

hard

Fill both blanks to complete the pod template metadata and container name.

Kubernetes

spec:
  template:
    metadata:
      labels:
        app: [1]
    spec:
      containers:
      - name: [2]
        image: nginx:latest

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Afrontend

Bbackend

Cnginx

Dredis

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatch between labels and selector

Using container names that don't match the image

The pod template labels must match the selector labels. The container name is usually the application or image name, here nginx.

5fill in blank

hard

Fill all three blanks to complete the ReplicaSet spec with replicas, selector, and pod labels.

Kubernetes

spec:
  replicas: [1]
  selector:
    matchLabels:
      app: [2]
  template:
    metadata:
      labels:
        app: [3]

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

Afrontend

B3

Dbackend

Attempts:

3 left

💡 Hint

Common Mistakes

Mismatch between selector and pod labels

Using non-numeric replicas

The replicas is set to 3. The selector and pod labels must match and are both frontend.