Blue-Green-Deployment Using CI/CD with AWS EKS

Project Overview | Installation | Documentation

Project Overview

Develop a CI/CD pipeline for micro services applications with blue/green deployment. We will also develop Continuous Integration steps as you see fit, but must at least include typographical checking (aka “linting”). [

Project Tasks

project goal is to operationalize machine learning microservice using kubernetes, which is an open-source system for automating the management of containerized applications. In this project we will:

• Pushing the built Docker container(s) to the Docker repository (use AWS ECR/ Dockerhub);
• Deploying these Docker container(s) to a small Kubernetes cluster.
• Use Ansible or CloudFormation to build your “infrastructure”; i.e., the Kubernetes Cluster
• Or we can also use AWS Kubernetes as a Service for Kubernetes cluste.
• Construct your pipeline in your GitHub repository, GitOps

The final implementation of the project will showcase your abilities to implement blue/green deployment using docker, kubernete, AWS EKS.

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File Information

• Dockerfile
  • file that contains all commands, in order, needed to build a image.
• run_docker.sh
  • Shell Script to run docker container and exposed container port to host.
• upload_docker.sh
  • Shell Script to push image to docker registery with tag
• run_kubernetes.sh
  • Shell Script to run kubernetes Pod with docker container and forward port from container to host
• Jenkinsfile
  • Descriptive Jenkinsfile for automating the blue/green deployment pipeline

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Installation

• Install java
• Install Jenkins
• Configure Jenkins with AWS Credential and docker Credential
• Install BlueOcean Plugin
• Install Docker
• Install AWS CLI (1.16 or higher)

	curl -O https://bootstrap.pypa.io/get-pip.py
  python get-pip.py
  Pip install awscli –upgrade

• Install EKSCTL

 curl --silent –location "https://github.com/weaveworks/eksctl/releases/download/latest_release/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
 sudo mv /tmp/eksctl /usr/local/bin
 eksctl version
 [ℹ]  version.Info{BuiltAt:"", GitCommit:"", GitTag:"0.13.0"}

• Install KUBECTL

 curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl
 chmod +x ./kubectl
 sudo mv ./kubectl /usr/local/bin/kubectl
 kubectl version --short --client
   Client Version: v1.17.3

• Install Hadolint for Linting test

sudo  wget -O /bin/hadolint https://github.com/hadolint/hadolint/releases/download/v1.16.3/hadolint-Linux-x86_64
sudo chmod +x /bin/hadolint

NOTES

• eksctl is a simple CLI tool for creating clusters on EKS - Amazon’s new managed Kubernetes service.It is written in Go, uses CloudFormation. customize cluster by using a config file

eksctl create cluster -f cluster.yaml

Important: In us-east-1 you are likely to get UnsupportedAvailabilityZoneException. If you do, copy the suggested zones and pass --zones flag, e.g. eksctl create cluster --region=us-east-1 --zones=us-east-1a,us-east-1b,us-east-1d.

Kubernetes Steps

• Microservices deployed using pipeline in AWS EKS
• Label instances with blue and green application accordingly
• Redirect live Traffic to green environment by updating the updating LB service with selector
• Kubernetes command

kubectl get nodes
kubectl get pods
kubectl get svc
kubectl describe svc lbsvc_name
kubectl logs podname

REFERENCE

• Dockerfile
• Blue/green Deployment
• Kubernetes
• Jenkinsfile
• EKSCTL
• AWS EKS
• cloudformation
• Hadolint