Automation of Git, Github, Kubernetes, Jenkins by Groovy Script
What is 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.
What is GitHub?
GitHub is a code hosting platform for collaboration and version control. GitHub lets you (and others) work together on projects.
What is Jenkins?
Jenkins is a self-contained, open-source automation server that 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.
What is Groovy Script?
Apache Groovy is an object-oriented and Java syntax compatible programming language built for the Java platform. Groovy can be used as a scripting language for the Java platform. It is almost like a super version of Java which offers Java’s enterprise capabilities.
What is 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 DESCRIPTION:
Perform the task given below with the help of Jenkins coding file ( called as jenkinsfile approach ) and perform the with following phases:
1. 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 start 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 the 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 the app is not working, then send an email to the developer with error messages and redeploy the application after code is being edited by the developer.
SOLUTION:
Job1
This job will download our script from Github and execute it.
Creating Job1 Script:
This will connect to my dtask6 git repo(python file which I will be using for email is present there with rest of code), this cant be shared.
Creating Job2 Script:
Creating Job3 Script.
For building pipeline use this Script.
