Advanced GitOps: Automating Deploys, Rollbacks and Production Best Practices with ArgoCD

A technical guide outlines how to build a complete GitOps pipeline by separating CI and CD responsibilities: CI builds and pushes images, then commits updated manifests to a Git repository, while ArgoCD handles all cluster deployments. This separation removes the need for CI pipelines to hold direct cluster credentials, improving security over traditional kubectl-based deployments. When a deployment fails, rollbacks can be triggered simply by reverting the offending Git commit, with ArgoCD automatically reconciling the cluster to the previous state. ArgoCD's retry and selfHeal policies can be configured to handle transient failures with exponential backoff, reducing the need for manual intervention. For more advanced scenarios, tools like Argo Rollouts enable progressive delivery strategies such as canary or blue-green deployments, with automatic promotion or rollback driven by real-time metrics like error rates and latency.