ArgoCD

Argo CD is an open-source, declarative, GitOps continuous delivery tool for Kubernetes. It automates the deployment of applications to Kubernetes clusters. Argo CD uses Git as the single source of truth for application definitions, configurations, and environments. Changes committed to the Git repository are automatically synchronized to the Kubernetes cluster.

The core principle of Argo CD is GitOps, which means that all desired application states are stored in a Git repository. Argo CD continuously monitors the Git repository and the live state of applications in Kubernetes. When a discrepancy is detected between the desired state in Git and the actual state in the cluster, Argo CD automatically applies the necessary changes to bring the cluster into the desired state. This declarative approach ensures that deployments are repeatable, auditable, and easily reversible.

Argo CD supports various deployment strategies, including rolling updates, blue-green deployments, and canary releases. It provides a web-based user interface that allows users to visualize application status, track deployment history, and perform manual sync operations if needed. It also offers a command-line interface (CLI) for scripting and automation. Argo CD integrates with popular Git providers like GitHub, GitLab, and Bitbucket. Its architecture is designed to be highly available and scalable, making it suitable for managing complex application deployments in production environments.