Gain insights into DevOps by exploring Docker, Git, and Jenkins. Delve into creating CI/CD pipelines, optimizing workflows, and enhancing collaboration through interactive katas and practical exercises.

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The course is a collection of DevOps practices and exercises that will teach learners how to use three of the most important DevOps tools: Docker, Git, and Jenkins. Each set of katas will introduce the learners to the tool and its usage. 

The katas build on each other, so that after you're finished, you will have created a complete Continuous Integration/Continuous Delivery pipeline. Through these katas, you will learn to tackle common challenges, optimize workflows, and enhance collaboration between development and operations teams. 

Each katas focuses on specific DevOps practices, enabling readers to gain valuable insights and proficiency in implementing DevOps methodologies effectively. With its interactive approach, the course empowers learners to build a solid foundation in DevOps and foster continuous improvement within their organizations.

DevOps Katas: Mastering DevOps Practices

CI is the automation of a software delivery process. When integrated with an SCM system, Jenkins can be configured to run a job (or set of jobs) automatically each time code changes are pushed to a source code repository. When a build is run with each code update, bugs can be discovered and fixed immediately. This is much more efficient than allowing many problems from many code updates to clog the development lifecycle.  

This kata will demonstrate how to configure a Git server to trigger Jenkins jobs when commits are pushed to the Git server.  

# Step 1: Install the Gogs webhook plugin

The following are the steps to install the Gogs-Webhook plugin:

- Click Jenkins at the top left.  
- Click "Manage Jenkins."  
- Click "Manage Plugins."  

- Click the "Available plugins" tab.  
- Type "Gogs" into the filter field.  
- Check the box for the "Gogs" plugin.  
- Click "Install without restart."  
- Wait for the installation to complete, then click "Go back to the top page."  




Jenkins can be extended by installing plugins. Jenkins plugins are written in Java, as is the core Jenkins platform. Plugins add packaged, purpose-built functionality to Jenkins. Typical plugins add features to Jenkins and provide integration options between Jenkins and other systems. This step installs the Gogs plugin to Jenkins.  

The Gogs plugin was written by the maintainer of the open-source Gogs Git server, specifically to integrate Gogs with Jenkins. A **webhook** is a generic term for an integration point between a Git server and another system. The Gogs plugin is designed to provide Jenkins with a way to receive build trigger messages from a Gogs server. The next step in this process is to configure a build trigger in the "web-storelist" job.  

# Step 2: Configure a build trigger

-  Click the "web-storelist" job.  
-  Click "Configure."  

Learn about installing and configuring the Gogs-Webhook plugin and configure and test the build trigger.

Introduction to DevOps

Getting Started With DevOps Katas

Container and Docker

Docker Katas

Source Control Management and Git

Git Katas

Continuous Integration and Jenkins

Jenkins Katas

Mini Project: Git and Jenkins Katas

Conclusion

Appendix

Jenkins Kata 4: Integrate Git with Jenkins

Step 1: Install the Gogs webhook plugin