Sample scalable Application using a canary deployment, Helm and Kubernetes

Dev, stage and production environments with canary deployment.

• Golang
• Backend: ./app
• frontend: ./app -frontend=true -backend-service=http://backend:8080 -port=8085
• Jenkinsfile
• Kubernetes deployments

Production Service

Canary Service

Settings kubernetes cluster and Jenkins

Setting kubernetes, helm and jenkins ... more details

Deploy using minikube

We will test using minikube minikube start

• Install CI: Jenknis make jenkins-install

  User: admin Password: printf $(kubectl get secret --namespace ci j-v1-jenkins -o jsonpath="{.data.jenkins-admin-password}" | base64 --decode);echo

• Create Job (future work: Initialize job by groove) Configure a multibranch pipeline

• Install kubernetes files

$ kubectl create namespace production
$ kubectl create namespace stage
$ kubectl --namespace=production apply -f k8s/production
$ kubectl --namespace=production apply -f k8s/canary
$ kubectl --namespace=production apply -f k8s/services

• Run locally

make backend-local
make frontend-local

Environments isolate by namespaces in kubernetes

Scale the production service

kubectl --namespace=production autoscale deployment app-frontend-production --min=1 --max=5 --cpu-percent=80

deployment.apps "app-frontend-production" autoscaled

Information about the Horizontal pod autoscaler

kubectl --namespace=production get hpa

Canary deployment in kubernetes

Job - Multibranch pipeline

Pipeline jenkins