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

Containerization supports DevOps practices in several ways:  

# Automation
Container ecosystems—including runtimes, tools, and management systems—are designed to be automated. Container management and orchestration systems simplify and automate the development, testing, deployment, and management of large groups of containers.  

# Reliability
Containers can and should be tested, as a single unit, from the beginning of the development cycle. Testing early ensures that defects don't flow from development environments into later environments, which can hamper velocity and cause rework.


# Portability
Containers can be run in any environment with a compatible container engine. This offers flexibility to operations teams when deploying an application. Any given container can be run in a private data center, private cloud, or public cloud, depending on operational and security requirements.  

# Scalability
Dynamic scaling is more practical with containers than with VMs. Containers are processes that can be started in seconds rather than entire VMs that start in minutes. Container management systems can start new containers on demand based on performance thresholds. Containers require less storage than VMs, reducing storage costs and speeding up deployment.  

# Isolation
Containers have their own process space, so they're isolated from each other on the same host. Containers can't interfere with the function of other containers. Each container has its own file system, stored as a file on the container host. Applications are often made of a complex hierarchy of dependent components. Isolating container file systems from each other and the host makes it much easier to manage those dependencies. 

# Docker in this course
	
This course will do more than teach us how to use Docker to make DevOps more effective. We’ll use Docker to make learning other tools easier. We’ll learn how Docker can support applications of any type, including Jenkins and Git. Containers are so effective that software vendors are beginning to offer them as an installation alternative. Rather than spending hours installing software, individuals and enterprises can simply load a preconfigured container.  


If we've already installed the #key# Learning Virtual Machine (LVM): LVM refers to a preconfigured virtual machine (VM) that contains all the necessary software and tools required to run coding exercises or katas. #key#, then we already have everything we need to start with Docker, Jenkins, and Git. Each kata practice session should be fast, with no setup or installation needed. Using Docker will allow us to practice our katas and then revert back to a known starting point whenever we’re ready to start again from the beginning. We can also preserve our changes if we want to experiment.  

Learn about Docker, DevOps katas, and DevOps practices.

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

Docker, DevOps Katas, and DevOps Practices by Containerization

Automation

Reliability