Quiz App

Simple EventSourcing example using .NET Core, React, Docker, Jenkins and K8s.

Docker

• run with docker from bash with .\run.sh

  Open http://localhost for quiz voting and http://localhost?results for quiz results

Minikube

• run with minikube

  • Setup minikube

    ./k8s/hack/setupkube.sh

  • Setup dnsmasq (optional)

    sudo INGRESS_DOMAIN=quiz.internal ./k8s/hack/setupdns.sh

    Notes: For automatic dns wilcards resolution use dnsmasq

  • Install jenkins and quiz app

    • Export the following environment variables:

      export INGRESS_DOMAIN='quiz.internal'
      export QUIZ_ENVIRONMENT='production'
      export TAG_BRANCH=master
      export REGISTRY=localhost:30400
      export TAG=latest
      
      export JENKINS_PASSWORD=changeit
      export GITHUB_REPO=netcorebcn/quiz
      export GITHUB_USER=mygithubuser
      export GITHUB_TOKEN='<TOKEN>'

    • Execute ./k8s/hack/install.sh

    • Add ingress hosts to local host file (only if dnsmasq is not setup)

      echo $(minikube ip) {jenkins,rabbit,registry}.quiz.internal quiz.internal | sudo tee -a /etc/hosts

    • Open http://jenkins.quiz.internal/job/quiz/ and Build!

    • Once its build Open http://quiz.internal and http://quiz.internal?results

    • Github integration for Pull Request workflow

      • Add Integration & Service: Manage Jenkins (GitHub plugin)

        http://jenkins.quiz.internal/github-webhook/

      • For local jenkins integration you can use ngrok

      ./ngrok http jenkins.quiz.internal:80 -host-header=jenkins.quiz.internal

  Setup script example

  You can use full example setup with ngrok and dnsmasq integration: ./k8s/hack/setup.sh, it requires to store the enviroment variables in a secrets file.

Notes

Some slides on the process here: https://www.slideshare.net/PauLpez3/built-in-cicd-with-kubernetes-jenkins-and-helm

We aren't starting from the scratch. We are using ideas and code from other awesome repos.

• Running Jenkins in Docker

  http://container-solutions.com/running-docker-in-jenkins-in-docker/

• K8s ingress configuration for ci cd with jenkins

  https://github.com/kenzanlabs/kubernetes-ci-cd

  https://medium.com/@Oskarr3/setting-up-ingress-on-minikube-6ae825e98f82

• Marten Event Store library for .NET and postgresql

  https://github.com/JasperFx/marten

• WebSockets helper classes thanks to

  https://github.com/radu-matei/websocket-manager

• dnsmasq integrate with minikube

  https://github.com/superbrothers/minikube-ingress-dns