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GitOps Controller

A GitOps controller is a software component that continuously monitors the desired state of infrastructure and application configurations stored in a Git repository and ensures that the actual state of a system, such as a Kubernetes cluster, matches this declared state. Working in close collaboration with the artifact repository, it operates by regularly comparing the live state of resources in the environment with the version-controlled configurations in Git. If any differences are detected, the controller automatically reconciles them by applying the necessary changes to bring the system back in sync with what is defined in the repository. This approach leverages Git as the single source of truth, enabling automated, auditable, and reproducible deployments, and is typically implemented as a Kubernetes controller that runs a reconciliation loop to maintain consistency between Git and the cluster.