Challenge ·Medium

File-Aware Readiness Probe for Container Initialization

Omkar Shelke
by  Omkar Shelke · on
Kubernetes
Create a Pod with a readiness probe that checks for the existence of a file inside the container to determine its ready state.
#pod#readiness-probe#ckad#probe

Scenerio

Create a single Pod named python-app-pod in namespace python-app of image busybox:stable. The Pod should have a readiness probe executing:

cat /src/main.py

It should initially wait 15 seconds, periodically wait 15 seconds, and have failureThreshold set to 2.

This will set the container ready only if the file /src/main.py exists.

Hint

Use a container command that creates /src/main.py and keeps the container running (sleep), and an exec readinessProbe (cat /src/main.py) so the Pod becomes Ready only when the file exists.

Test Cases

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