GitOps with ArgoCD: Automating Kubernetes Deployments via Git

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GitOps is a practice that uses Git as the single source of truth for the desired state of a Kubernetes cluster, replacing manual kubectl commands with automated, agent-driven deployments. A GitOps agent running inside the cluster continuously monitors the repository and applies any changes automatically once a pull request is reviewed and merged. This approach provides built-in audit trails through Git history, eliminating the need for separate change-log tools. It also enables continuous reconciliation, where the agent detects and can revert unauthorized manual changes to the cluster, a condition known as drift. ArgoCD, one of the most widely used GitOps controllers for Kubernetes, implements this workflow by introducing an Application resource that links a Git repository path to a target cluster and namespace.

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