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Zero Backend Service - Golang

This is a Zero module which sets up a service which can be deployed to the environment set up with zero-aws-eks-stack.

The /templates folder is meant to be filled in via Zero and results in Simple Go Service with a status endpoint. It also contains a simple CircleCI pipeline which defines how to build and deploy the service.

This repository is language/business-logic agnostic; mainly showcasing some universal best practices:

  • Built in containerization with docker
  • Deployment flow with kubernetes
  • Out of the box CI/CD flow CircleCi
    • testing
    • building docker image
    • uploading docker image to private registry (ECR)
    • deploy with kustomize
    • manual approval step for production environment

Repository structure

/   # file in the root directory is for initializing the user's repo and declaring metadata
|-- Makefile                        #make command triggers the initialization of repository
|-- zero-module.yml                 #module declares required parameters and credentials
|   # files in templates become the repo for users
|   scripts/
|   |   # these are scripts called only once during zero apply, and we don't
|   |   # expect a need to rerun them throughout development of the  repository
|   |   # used for checking binary requires / setting up CI / secrets
|   |   |-- check.sh
|   |   |-- gha-setup.sh
|   |   |-- required-bins.sh
|   |   |-- setup-stripe-secrets.sh
|   templates/
|   |   # this makefile is used both during init and
|   |   # on-going needs/utilities for user to maintain their infrastructure
|   |-- Makefile
|   |-- kubernetes/
|       |-- base/
|       |   |-- cronjob.yml
|       |   |-- deployment.yml
|       |   |-- kustomization.yml
|       |   |-- service.yml
|       |-- migration/
|       |   |-- job.yml
|       |-- overlays/
|       |   |-- production/
|       |   |   |-- deployment.yml
|       |   |   |-- ingress.yml
|       |   |   |-- kustomization.yml
|       |   |   |-- pdb.yml
|       |   |-- staging/
|       |   |   |-- deployment.yml
|       |   |   |-- ingress.yml
|       |   |   |-- kustomization.yml
|       |   |   |-- pdb.yml
|       |   |-- dev/
|       |   |   |-- deployment.yml
|       |   |   |-- ingress.yml
|       |   |   |-- kustomization.yml
|       |   |   |-- pdb.yml
|       |-- secrets/
|       |   |-- .gitignore
|       |   |-- kustomization.yml
|       |   |-- namespace.yml

Prerequisites

  • Kubernetes Cluster up and running
  • Have CircleCI and Github token setup with the Zero project
  • CI-user created via EKS-stack with access to ECR and your EKS

Initialization

This step is meant to be executed during zero apply, includes following steps:

  • Adding environment variables to CircleCI project
  • Linking the CircleCi with the github repository
    • Linking the circleCI will automatically trigger the first build and deploy your application to EKS cluster

Frontend Repo

The corresponding frontend for this app is zero-frontend-react.

Other links

Project board: zenhub