simple-devops-project-5

Simple DevOps Project 5

In this project we are going to create Jenkins CI / CD to deploy webapp.war application to kubernetes server via ansible playbooks. It will create tomcat docker image with webapp.war file and push image to docker hub repo and pull from kubernetes master server.

Pre-Requirments

Setup and Ready the following servers and account.

• Jenkins server and Maven install in single server.
• Ansible server
• Kubernetes server with kops (works only on AWS)
• A Docker Hub account and create simple-devops-image repository.

Setup on kubernetes master servers

• Login to kubernete master server
• swith to root user

sudo su root

-Copy following file to /root/ directory

• mkn400-deploy
• mkn400-service

Setup on Ansible server

• Login to ansible server and copy public key onto kubernetes cluseter master account
• create a /opt/k8s-lab directory on it.

mkdir /opt/k8s-lab/

• Copy hosts to /opt/k8s-lab/ file and Update new group called 0kubernetes and add kubernetes master IP in that.

  • hosts

• Copy following ansible playbooks files to k8s-lab directory.

  • Dockerfile
  • create-simple-devops-image
  • kubernetes-mkn400-deployment
  • kubernetes-mkn400-service

Integration Kubernetes with Jenkins

Create "Deploy_on_Kubernetes_CI" Jenkin job

• From Jenkins dashboard select New Item

• Enter an item name: Deploy_on_Kubernetes_CI

• Source Code Management:

  • Repository: https://github.com/maheshkn400/hello-world.git
  • Branches to build : */master

• Build

  • Root POM:pom.xml
  • Goals and options: clean install package

• Post-build Actions

  • Send build artifacts over SSH
    • SSH Publishers
    • SSH Server Name: ansible-server
    • Transfers > Transfer set
      • Source files: webapp/target/*.war
      • Remove prefix: webapp/target
      • Remote directory: //opt//k8s-lab
      • Exec command:

      ansible-playbook -i /opt/k8s-lab/hosts /opt/k8s-lab/create-simple-devops-image.yml --limit localhost;

Save and run the job.

Create "Deploy_on_Kubernetes_CD" Jenkin job

• From Jenkins home page select New Item
• Enter an item name: Deploy_on_Kubernetes_CD
• Freestyle Project
• Post-build Actions
  • Send build artifacts over SSH
    • SSH Publishers
      • SSH Server Name: ansible-server
      • Exec command:

      ansible-playbook -i /opt/k8s-lab/hosts /opt/k8s-lab/kubernetes-mkn400-deployment.yml;
      ansible-playbook -i /opt/k8s-lab/hosts /opt/k8s-lab/kubernetes-mkn400-service.yml;

Save and run the job.

Go Back To configuration of Deploy_on_Kubernetes-CI Job

• Post-build Actions
  • select run job
    • Deploy_on_Kubernetes-CD
  • Check checkbox trigger when stable

Apply and Save

Before run Deploy_on_Kubernetes-CI job login to kubernetes master and check for pods, deployments and services on kubernetes master

kubectl get pods -o wide
kubectl get deploy -o wide
kubectl get service -o wide

And go to Jenkins Deploy_on_Kubernetes-CI job and run / build the job.

After success deploy access https://<kubernetes-master-pubilc-ip>:31200/webapp URL.

I'm Happy To Get Suggestions 😄