DevOps Engineer Hiring Task

Welcome! This assignment is designed to showcase your skills in building, deploying, and managing applications in Kubernetes and cloud-native environments.

Goal

Demonstrate your ability to:

1. Containerize applications.
2. Deploy them in a Kubernetes environment.
3. Set up a continuous delivery (CD) pipeline with cloud-native tools.

Task Overview

You will accomplish the following:

1. Kubernetes Test Cluster Setup

   • Build a small Kubernetes test cluster, either locally (using tools like Minikube or Kind) or in the cloud.
   • A single-node cluster is sufficient, but feel free to expand as needed.

2. Application Containerization

   • Create Dockerfiles for the provided applications (app_a and app_b), ensuring they run correctly in their containers and return expected results.

3. Deployment Mechanism in Kubernetes

   • Develop a repeatable deployment mechanism for both applications within Kubernetes.

4. Continuous Delivery Plan

   • Outline a CD plan for these applications. Specify the tools/vendors you would consider and your evaluation criteria for choosing them.

Deliverables

Create a GitHub repository with the following:

1. Dockerfiles for Each Application

   • Separate Dockerfiles for app_a and app_b.

2. Repeatable Deployment Mechanism

   • A deployment script (e.g., deploy.sh) or Kubernetes configuration files (e.g., YAML manifests) for deploying each application.

3. Documentation

   • A README.md with setup instructions so we can run the applications ourselves.
   • A short document (e.g., CD_Plan.txt) outlining:
     • Your continuous delivery plan.
     • Your chosen tools and the rationale behind each choice.

4. Commit History

   • Meaningful and well-organized git commit messages to demonstrate your approach.
   • Each commit should describe its purpose and changes clearly.

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Bonus Points

To stand out, consider adding any of the following:

• Multi-stage Docker Builds: Separate stages in Dockerfiles for building and running the applications.
• Automated Kubernetes Environment: Script or configuration for an automated setup of a local or cloud-based Kubernetes environment.

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Submission

1. Repository: Create a new GitHub repository with a unique name for this assignment.
2. Privacy: If you prefer, keep the repository private and add us as collaborators.
3. Avoid Forks or PRs: Do not fork this task’s repo or submit pull requests.

Notes

• Please do not fork or submit a PR to this repo
• Feel free to change the python application code and/or their requirements to make them more "cloud native"
• If you get stuck or need more information, please reach out for clarity
• Have fun!

Getting Started in Local Development

Running the apps outside of a container:

pip install -r requirements.txt
sqlite3 database.db < schema.sql
python app_a.py
python app_b.py

Making a request

# Test a non-auth'd route
curl http://127.0.0.1:5000/hello

curl -X POST -H 'Authorization: mytoken' http://127.0.0.1:5000/jobs