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Nyomio Framework

A highly opinionated mash off technologies based on

  • micronaut (on kotlin) - microservices backend
  • angular - frontend
  • keycloak - authentication provider
  • postgres - DB both for keycloak and domain data
  • Traefik - proxy

The framework has specific ways augmented with code generation to make data travel from backend to frontend.

Ready for kubernetes with helm charts.

Reasoning behind architectural choices

Here is a link that describes the architecture, the components, the motivation and the reasoning behind each technical decision: here

Frontend

Angular frontend, but even more opinionated. TODO: we need a reference for the documentation

Getting started (local)

Prerequisites

  • running local kubernetes cluster (instructions tested with docker desktop). Kubernetes should be switched on: preferences/kubernetes/enable.
  • helm installed

Setting up and install SSL certificates

Create rootCA key and cert

cd certs
./createRootCA.sh

this will create 2 files: rootCA.key and rootCA.crt

IMPORTANT: You should install rootCA.crt as a trusted certificate into your OS / Browser if you would like browsers to trust your certs signed by this self signed root certificate. You can find instructions here for multiple OS-es.

Notes on browsers: Most browsers respect the OS certs. Firefox, however, is an example that manages its own trusted certificates.

Create SSL certificates for the domains we use for development

We generate a SAN (Subject Alternative Names) certificate for our local domains under nyomio.local. To do that run

cd certs
./createcert.sh

This will use the file certs/cert.cfg where you can include more domains in the SAN list if needed. This will also create a configuration for traefik by replacing the palceholders with the base64 converted certificate and private key in traefikvalues.template.yml and creating traefikvalues.yml.

Install everything into kubernetes

Simply run

k8s/setup.sh buildAuth buildAdmin buildWeb
kubectl apply -k

IMPORTANT: Having rootCA and leaf SSL certificates created is a prerequisite for installing.

To run on minikube you have to use minikube's docker command in the terminal which you will use to execute install.sh. Execute before install.sh:

eval $(minikube docker-env)

Add DNS entries to the hosts file

10.109.10.97 traefik.nyomio.local app.nyomio.local sso.nyomio.local

Here you have to replace 10.109.10.97 with the external ip of traefik ingress service.

Getting externalIp for traefik service on minikube

You have to execute minikube tunnel to make traefik accessible from the host. After that you can see the ip in the result of k get services traefik-ingress

Development