Automation of Git,GitHub,Jenkins & Kubernetes

5 min readJul 16, 2020

Integration of CI/CD Tool & Container Orchestration Tool

Git:

Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.

Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and Clear Case with features like cheap local branching, convenient staging areas, and multiple workflows.

GitHub:

GitHub is a code hosting platform for collaboration and version control.

GitHub lets you (and others) work together on projects.

Jenkins:

Jenkins is a self-contained, open source automation server which can be used to automate all sorts of tasks related to building, testing, and delivering or deploying software.

Jenkins is a CI/CD tool.

Jenkins can be installed through native system packages, Docker, or even run standalone by any machine with a Java Runtime Environment (JRE) installed.

Kubernetes:

Kubernetes (K8s) is an open-source system for automating deployment, scaling, and management of containerized applications.

It groups containers that make up an application into logical units for easy management and discovery. Kubernetes builds upon 15 years of experience of running production workloads at Google, combined with best-of-breed ideas and practices from the community.

TASK : Build an Automation

Problem Statement

Create container image that’s has Jenkins installed using dockerfile Or You can use the Jenkins Server on RHEL 8/7
2. When we launch this image, it should automatically starts Jenkins service in the container.
3. Create a job chain of Job1, Job2, Job3 and Job4 using build pipeline plugin in Jenkins
4. Job1 : Pull the Github repo automatically when some developers push repo to Github.
5. Job2 :
1. By looking at the code or program file, Jenkins should automatically start the respective language interpreter installed image container to deploy code on top of Kubernetes ( eg. If code is of PHP, then Jenkins should start the container that has PHP already installed )
2. Expose your pod so that testing team could perform the testing on the pod
3. Make the data to remain persistent ( If server collects some data like logs, other user information )
6. Job3 : Test your app if it is working or not.
7. Job4 : if app is not working , then send email to developer with error messages and redeploy the application after code is being edited by the developer.

Solution:

STEP1: In this step I had created a conatiner image of CI/CD Tool i.e. Jenkins by using Dockerfile.

But in my system I am using my RHEL 8 which has already Jenkins installed & kubectl configured.

STEP2: Write code in Git & push it to Github repo.

STEP3: In this step I will create JOB1 & configure it in such a way that it loads the data from GitHub Repo and copy it to my local system.

STEP4: In this step I will create JOB2 & configure it in such a way that it launches a deployment of the image having php interpreter with that code which developer has pushed to GitHub.