Challenge, Medium,  on  Kubernetes

File-Aware Readiness Probe for Container Initialization

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

How to Author Challenges on iximiuz Labs

Instead of providing a subpar online editing experience, iximiuz Labs offers a helper CLI tool called labctl, allowing you to use your favorite text editor (or a full-featured IDE) to write content from the comfort of your local machine.

Install labctl CLI

curl -sf https://labs.iximiuz.com/cli/install.sh | sh

This will download and install the latest version of the labctl CLI. You only need to do this once per workstation.

Authorize labctl

labctl auth login

This will open a browser window asking you to authorize labctl to access your account. You need to do it after a fresh install of labctl and repeat it whenever the auth session expires.

Pull challenge content

labctl content pull challenge file-aware-readiness-gate-for-container-initialization-0438fb3d

This will create a local copy of the challenge content in a directory named file-aware-readiness-gate-for-container-initialization-0438fb3d. You only need to do this once per challenge.

Stream your changes

labctl content push -fw challenge file-aware-readiness-gate-for-container-initialization-0438fb3d

Run this command in a separate terminal to continuously upload your changes to the server while editing the challenge in your favorite text editor or IDE.

You can also use labctl to create, list, and delete your content. Learn more about the available commands: labctl content --help

Start challenge