Liveness probe concept in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a liveness probe using an HTTP GET request.

Kubernetes

livenessProbe:
  httpGet:
    path: [1]
    port: 8080

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

A/status

B/live

C/ready

D/healthz

Attempts:

3 left

💡 Hint

Common Mistakes

Using readiness probe paths like /ready instead of liveness probe paths.

Using an incorrect or non-existent path.

The /healthz path is commonly used for liveness probes to check if the container is alive.

2fill in blank

medium

Complete the code to set the initial delay before the liveness probe starts.

Kubernetes

livenessProbe:
  initialDelaySeconds: [1]

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

A10

B5

C0

D30

Attempts:

3 left

💡 Hint

Common Mistakes

Setting initialDelaySeconds to 0 causing immediate probes.

Setting too long delay causing slow failure detection.

initialDelaySeconds defines how long to wait before starting the liveness probe. 10 seconds is a common safe delay.

3fill in blank

hard

Fix the error in the liveness probe configuration by completing the missing field.

Kubernetes

livenessProbe:
  tcpSocket:
    port: [1]

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

A8080

B80

Ctcp

Dhttp

Attempts:

3 left

💡 Hint

Common Mistakes

Using protocol names like 'http' or 'tcp' instead of port numbers.

Using a port number not exposed by the container.

The port field must be a number or named port. 8080 is a common port for HTTP services.

4fill in blank

hard

Fill both blanks to configure a liveness probe with an exec command and failure threshold.

Kubernetes

livenessProbe:
  exec:
    command:
      - [1]
      - [2]
  failureThreshold: 3

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

Acat

Bls

C/tmp/healthy

D/tmp/notfound

Attempts:

3 left

💡 Hint

Common Mistakes

Using commands that do not check liveness properly.

Using a file path that does not exist.

The exec command cat /tmp/healthy checks if the file exists to confirm liveness.

5fill in blank

hard

Fill all three blanks to create a liveness probe with HTTP GET, timeout, and period seconds.

Kubernetes

livenessProbe:
  httpGet:
    path: [1]
    port: [2]
  timeoutSeconds: [3]
  periodSeconds: 10

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

A/healthz

B8080

C5

D/status

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect paths or ports.

Setting timeoutSeconds longer than periodSeconds.

This liveness probe checks /healthz on port 8080 with a 5 second timeout and probes every 10 seconds.