What are we doing here?

This repository contains two simple APIs built in Go: Charlie and Delta. When Charlie receives a request, it will send a request to Delta, wait for the response and combine Delta's result to respond with the following:

I'm charlie-deployment-7cd9bb6d4b-wmtwb! Who are you? I'm delta-deployment-6f868b498c-mgm8k!
[                      Charlie                      ] [               Delta                ]

Tech/tools used:

• Golang for the API's
• Azure DevOps multistage yaml pipelines for CI/CD
• Bicep for infrastructure deployment
• Kustomize for manifest baking based on the environment
  • For example: only the prod release will create a HorizontalPodAutoscaler with a minimum of 3 replicas. Whereas dev will not have a hpa.

First time setup

• Import/create the three pipelines in Azure DevOps:
  • infra/azure-pipelines.yml
  • src/charlie/azure-pipelines.yml
  • src/delta/azure-pipelines.yml
• Run the infrastructure pipeline
  • This will deploy an ACR and AKS resource using Bicep
• Execute initial_setup.sh from a terminal (requires kubectl, helm and az cli)
  • This will create dev + prod namespaces, public IPs and ingresses. This could theoretically be integrated in an Azure DevOps pipeline.
• Create new Azure DevOps Service Connections:
  • Docker Registry (ACR). Service connection name: ContainerRegistryServiceConnection
  • Kubernetes (Azure Subscription):
    • Service connection name: KubernetesDevServiceConnection
    • Namespace: dev
  • Kubernetes (Azure Subscription):
    • Service connection name: KubernetesProdServiceConnection
    • Namespace: prod
• Run the pipelines for Charlie + Delta
  • These 'app' pipelines have three stages:
    • Build: Builds and tags the Docker image and pushes it to ACR
    • Deploy Dev: Bake k8s manifests using Kustomize and deploy to dev namespace
    • Deploy Prod: Bake k8s manifests using Kustomize and deploy to prod namespace After the deployment is done, the ingress is reachable at:
• Dev url: http://ingressdev.westeurope.cloudapp.azure.com/
• Prod url: http://ingressprod.westeurope.cloudapp.azure.com/