2_hackathon

Containers and Kubernetes Hackathon

Please make sure you're comfortable with docker and kubernetes fundamentals before starting this. If not, it's highly recommended that you complete at least some of the hands-on, prescriptive labs in 1_fundamentals

Guidelines

• You're free to use the language, web framework of your choice.
• Focus more on containerization and kubernetes aspects rather than the actual design and implementation of the app itself. You just need two components at the very least, such as the one demonstrated in webinars. Something like below:
  • A front-end webapp
  • A backend api
  • Bonus: third component for caching or storage such as Redis.
• Containerize the app components and use ghcr for image registry. Do not put any sensitive content into the app.
• Recommended: Explore and use docker-compose for bringing up multiple containers together (locally) without kuberentes.
  • Avoid hard-coding backend service api url. Use env variables when possible. (can be done as part of Dockerfile too)
• Build essential kubernetes manifests for all your app components and deploy them to your cluster.
• Use ConfigMap and inject backend service location / url as an environment variable (may need some refactoring to Dockerfile if required)
• You can use the below to repos as a reference, but please make sure you're building the app, dockerfiles, kubernetes manifests from the scratch
  • https://github.com/suren-m/cndev (for containerization)
  • https://github.com/suren-m/cndev-config/tree/main/kustomization/base (for manifests. Note: you don't need to use kustomize. Just plain manifests to start with and bring in helm later on if time permits)

Bonus Scenarios

• Use Helm to configure your app for multiple environments. (maybe to dev1 and dev2 namespaces, each taking different values for replicas)
• Use Github Actions CI builds and pushing images to ghcr
• Incorporate image scanning into your CI pipeline
• Apply resource limits on containers
• Apply resource quotas and limit ranges on namespaces
• Explore a Service Mesh or dapr as you see fit. Refer to recordings of webinars delivered on these topics.
• Explore Bridge to Kubernetes or Attach vs code to pod feature for debugging your app running on your own namespace.
• Explore GitOps using a tool such as ArgoCd. Refer to recordings of webinars delivered on GitOps.
• For DevOps / Cloud Engineers - Use Terraform for iac for your aks cluster