GitOps is code-based infrastructure and operational procedures that rely on Git as a source control system. It is the practice of using Git pull requests to verify and automatically deploy system infrastructure modifications.
The most difficult part of creating a CICD pipeline is to bring all the relevant tools work together for our required automated operations. GitOps gives you the freedom to choose the best tools for the different parts.
GitOps procedures are performed by an underlying orchestration system. GitOps solutions today primarily use Kubernetes as the orchestration system, one of the alternative GitOps tool set is Terraform.
DevOps is a set of best practices for bringing together development and IT operations teams to build, test, and deploy software faster and more reliably. GitOps is a subset of DevOps that leverages Git specifically. And many strong proponents of GitOps believe it’s the future of DevOps. That’s because GitOps is a declarative and cloud-native approach to configuration management and infrastructure as code (IaC) that leverages version control.
The main benefit of GitOps is that by having centralized code and configuration, there’s a single source of truth for the application’s underlying code and deployment infrastructure. Developers can easily push new changes or revert to previous versions quickly.
To achieve a full GitOps install, a pipeline platform is required. Many tools available to make the pipeline and few are Jenkins, Bitbucket, CircleCi, Kubernetes etc. Pipelines automate and bridge the gap between Git pull requests and the orchestration system. Once pipeline hooks are established and triggered from pull requests, commands are executed to the orchestration piece.
Note: There are two ways to implement the deployment strategy for GitOps: Push-based and Pull-based deployments. When possible, the Pull-based approach should be preferred as it is considered the more secure and thus better practice to implement GitOps.