Startup probe concept in Kubernetes - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

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

Kubernetes

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

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

A/healthz

B/status

C/ready

D/check

Attempts:

3 left

💡 Hint

Common Mistakes

Using a path without a leading slash

Using an unrelated path like /status

The /healthz path is commonly used for health checks including startup probes.

2fill in blank

medium

Complete the code to set the initial delay seconds for the startup probe.

Kubernetes

startupProbe:
  initialDelaySeconds: [1]

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

A0

B30

C10

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Setting it to 0 which may cause immediate failure

Setting too high causing slow startup detection

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

3fill in blank

hard

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

Kubernetes

startupProbe:
  tcpSocket:
    port: [1]

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

Ahttp

Bport

C80

D8080

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number

Using an invalid port name

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 startup probe with an exec command and failure threshold.

Kubernetes

startupProbe:
  exec:
    command:
      - [1]
      - [2]
  failureThreshold: 5

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

Acat

Bls

C/tmp/startup-ready

D/bin/check-startup

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'ls' which lists directory contents

Using an invalid file path

The exec command runs cat /tmp/startup-ready to check if the file exists, indicating startup completion.

5fill in blank

hard

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

Kubernetes

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

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

A/startup

B8080

C5

D/healthz

Attempts:

3 left

💡 Hint

Common Mistakes

Using a path that is not a health check

Setting timeoutSeconds higher than periodSeconds

The probe uses /healthz path on port 8080 with a 5 second timeout for responsiveness.