Project Overview

In this project, we will develop a CI/CD pipeline for micro services applications with blue/green deployment on kubernetes cluster.

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Setup the Enviroment

• Environment used is Ubuntu18 in cloud9.
• Jenkins with Blue Ocean Plugin & Pipeline-AWS Plugin.
• Docker
• AWS Cli
• Eksctl
• Kubectl

Install Jenkins:

• wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
• sudo sh -c 'echo deb https://pkg.jenkins.io/debian-stable binary/ >> /etc/apt/sources.list'
• sudo apt-get update
• wget https://pkg.jenkins.io/debian-stable/binary/jenkins_2.204.6_all.deb
• sudo apt install ./jenkins_2.204.6_all.deb -y
• sudo systemctl start jenkins
• sudo systemctl enable jenkins
• sudo systemctl status jenkins

Install Eksctl:

• curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp
• sudo mv /tmp/eksctl /usr/local/bin
• eksctl version

Install kubectl: Refer for other operating system

Install via native package management:

• sudo apt-get update && sudo apt-get install -y apt-transport-https gnupg2
• curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -
• echo "deb https://apt.kubernetes.io/ kubernetes-xenial main" | sudo tee -a /etc/apt/sources.list.d/kubernetes.list
• sudo apt-get update
• sudo apt-get install -y kubectl

Install via other package management:

• snap install kubectl --classic
• kubectl version --client

About files:

• create_kubernetes_cluster.sh : To create kubernetes cluster and update-kubeconfig.
• Jenkinsfile : Jenkins pipeline steps.
• Dockerfile : Docker file to create nginx image.
• blue-replication-controller.yaml : Create a replication controller for blue pod.
• blue-service.yaml : Create a blue service for blue controller.
• green-replication-controller.yaml : Create a replication controller for green pod.
• green-service.yaml : Create a blue service for green controller.

To deploy:

1. Run: create_kubernetes_cluster.sh
2. Run Jenkins Pipeline.