Liveness and readiness probes in Microservices - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a liveness probe path in a Kubernetes pod spec.

Microservices

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

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

A/healthz

B/ready

C/metrics

D/status

Attempts:

3 left

💡 Hint

Common Mistakes

Using readiness probe path for liveness probe

Using metrics endpoint for liveness

The liveness probe typically uses the /healthz endpoint to check if the container is alive.

2fill in blank

medium

Complete the code to define a readiness probe path in a Kubernetes pod spec.

Microservices

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

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

A/healthz

B/status

C/ready

D/metrics

Attempts:

3 left

💡 Hint

Common Mistakes

Using liveness probe path for readiness probe

Using metrics endpoint for readiness

The readiness probe usually uses the /ready endpoint to check if the app is ready to serve traffic.

3fill in blank

hard

Fix the error in the probe configuration to correctly specify the initial delay seconds.

Microservices

livenessProbe:
  httpGet:
    path: /healthz
    port: 8080
  initialDelaySeconds: [1]

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

A0

B-5

C"five"

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using a string instead of a number

Using negative or zero values

The initialDelaySeconds must be a positive integer, so 5 is correct.

4fill in blank

hard

Fill both blanks to configure a readiness probe with a TCP socket check and a timeout.

Microservices

readinessProbe:
  tcpSocket:
    port: [1]
  timeoutSeconds: [2]

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

A8080

B5

C10

D80

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect port numbers

Setting timeout too high or zero

The readiness probe uses port 8080 and a timeout of 5 seconds.

5fill in blank

hard

Fill all three blanks to configure a liveness probe with an exec command, initial delay, and period seconds.

Microservices

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

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

Acat

B/tmp/healthy

C10

Dls

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong command or file path

Setting initial delay too low

The liveness probe runs cat /tmp/healthy after an initial delay of 10 seconds.