Service selectors and labels in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to select pods with label app=web.

Kubernetes

selector:
  matchLabels:
    app: [1]

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

Aweb

Bdatabase

Ccache

Dfrontend

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong label value like 'database' or 'cache'.

Confusing the label key with the value.

The selector must match the label value 'web' to select the correct pods.

2fill in blank

medium

Complete the service selector to match pods with label tier=backend.

Kubernetes

selector:
  matchLabels:
    tier: [1]

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

Afrontend

Bdatabase

Ccache

Dbackend

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'frontend' instead of 'backend'.

Mixing up label keys and values.

The selector must match the label value 'backend' to select the correct pods.

3fill in blank

hard

Fix the error in the selector to correctly match pods with label env=prod.

Kubernetes

selector:
  matchLabels:
    env: [1]

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

Aproduction

Bprod

Cdevelopment

Dtest

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'production' instead of 'prod'.

Using unrelated label values like 'test' or 'development'.

The pods are labeled with env=prod, so the selector must use 'prod'.

4fill in blank

hard

Fill both blanks to select pods with labels app=api and version=v1.

Kubernetes

selector:
  matchLabels:
    app: [1]
    version: [2]

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

Aapi

Bv2

Cv1

Dweb

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing version values like using 'v2' instead of 'v1'.

Using wrong app label like 'web' instead of 'api'.

The selector must match app=api and version=v1 to select the correct pods.

5fill in blank

hard

Fill all three blanks to create a selector for pods with labels role=frontend, env=staging, and track=canary.

Kubernetes

selector:
  matchLabels:
    role: [1]
    env: [2]
    track: [3]

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

Afrontend

Bstaging

Ccanary

Dproduction

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'production' instead of 'staging' for env.

Mixing up the label values for role or track.

The selector must match role=frontend, env=staging, and track=canary to select the correct pods.