GitOps is a term coined by Alexis Richardson, CEO of Weaveworks, along with this team. If you think that software development is only about writing quality code, then you are entirely wrong. It involves many more aspects, including project analysis, hardware infrastructure, software, testing, design, and deployment, etc. In general, software development firms spend a lot of money on buying tools and utilities for accomplishing various tasks in the development cycle. This is where GitOps comes into play as using GitOps; everything is brought under a single umbrella right from development to deployment. Yes, Git is used throughout the project development cycle, and hence you have a single source of control for the entire project.
GitOps ensures that every update made to Kubernetes is swift and effective. Using GitOps, development teams can push forward their changes quickly, and hence they can fulfill to continuous customers requests quite effectively than others. In other words, GitOps speeds up the development process to a great extent.
GitOps advocates the use of continuous deployment tools that allow teams to quicken their deployment process and push a lot of code in a quick time. Thus, it not only enhances the deployment process but also increases productivity as well.
Using Git provides developers with a lot of advantages. Yes, the development teams can revert/rollback the changes anytime they want. Since Git is the only source of truth and contains every bit of information required by the group, any breakdown or issue can be resolved easily and quickly. Compared to other systems, the recovery time with Git is very less.
When you are using GitOps, you no longer need to push the containers, but only need to update the specific code that is changed to the repository. Thus it not only saves a lot of time but improves the developer’s experience ultimately. And, most importantly, not every member of the development team needs to have a complete understanding of Kubernetes to push the code and update. Even beginner level programmers can easily understand the process and start deploying code into Git quite easily.
Another significant benefit of using GitOps is that it increases stability to a great extent. Using GitOps, teams can easily see a complete list of changes updated to the system, including who effected the changes, at what time the changes were effected, the list of changes made of, etc. It not only brings a whole lot of transparency in the system but also increases the stability of the system in a big way.
Another highlight of using GitOps is that it provides flexibility throughout the project development cycle. Right from deployment to changes in infrastructure, the workflow is the same, and hence consistency is maintained all the time. Every change made is done only through pull requests.
When it comes to GitOps deployment, it is either push or pull-based deployments. When compared to push-based implementations, the pull-based deployments are considered to be more secure and reliable and most sought after by development teams.
The Push-based installation strategy is employed by most popular tools and applications like Jenkins, CircleCI, or Travis CI. The source code of these applications resides in the program repository along with the required Kubernetes YAML to configure the application. Whenever any changes made to the code, the deployment descriptors are updated too.
GitOps comes with two kinds of repositories, the application, and the environment configuration repository. In the application repository, all the application source code along with the deployment manifest, is stored. In the environment configuration repository, details, including the infrastructure deployment and its manifests, are stored. It also contains details about configuration details of various applications and infrastructure apps.