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DevOps Practical — api-service

Welcome. This repository contains a small, synthetic service (api-service) and the infrastructure to build, deploy, and provision it. It is modelled on a real-world setup:

  • app/ — the service itself + its Dockerfile.
  • helm-charts/api-service/ — a Helm chart for the workload.
  • gitops/sandbox/ — Kustomize that renders the chart for the sandbox, plus the MongoDB it talks to (already running in your cluster).
  • terraform/ — a module + sandbox config that would provision the MongoDB hosts in GCP.
  • chef/cookbooks/mongodb/ — a configuration-management cookbook for the MongoDB hosts.

The task

This codebase has problems — some stop it from building or deploying, some are things you'd never ship to production, and some are subtle. Your job:

  1. Review, debug, and fix as many issues as you can.
  2. Get the service building and deploying into the sandbox cluster first, then harden it.
  3. Write down everything you spot in FINDINGS.md — even issues you don't have time to fix. We score what you find and understand, not just what you fix.

There is deliberately more here than anyone can finish in the time. Don't rush to "done" — prioritise, explain your reasoning, and flag risks. Breadth of detection and depth of understanding matter more than a green board.

Your sandbox (already set up on the VM)

  • docker, kind, kubectl, helm, kustomize, terraform are installed.
  • A multi-node kind cluster is running.
  • MongoDB (a single-member replica set rs0) is running in the data namespace.
  • An apps namespace exists for the workload.
  • You build and load the api-service image yourself (see below) once the Dockerfile builds.

Useful commands

# Make sure you're pointed at the local kind cluster (never a remote one):
kubectl config use-context kind-devops-test

# Build the image (after you fix the Dockerfile), then load it into kind:
docker build -t api-service:sandbox ./app
kind load docker-image api-service:sandbox --name devops-test

# Render + deploy the workload (the chart lives above the overlay, so allow that):
kubectl kustomize --enable-helm --load-restrictor LoadRestrictionsNone \
  gitops/sandbox/api-service | kubectl apply -f -
kubectl -n apps get pods
kubectl -n apps logs deploy/api-service

# Terraform (no cloud access — validate only):
cd terraform/sandbox/mongodb-api-service
terraform init -backend=false
terraform validate

Good luck.