DevOps Advanced

What is ArgoCD?

A declarative GitOps continuous delivery tool for Kubernetes that automatically syncs cluster state with Git repositories.

ArgoCD follows the GitOps principle: Git is the single source of truth for desired cluster state. It monitors Git repositories and automatically applies changes to Kubernetes clusters, ensuring the deployed state matches the declared state.

Features include automated sync, manual sync with approval, drift detection, rollback, multi-cluster management, SSO integration, and a web UI for visualization. ArgoCD is the leading GitOps tool for Kubernetes environments.

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An approach where servers are never modified after deployment — changes require building and deploying entirely new server instances.

Infrastructure Drift

The divergence between the actual state of infrastructure and its defined desired state, caused by manual changes or untracked modifications.

Pipeline as Code

Defining CI/CD pipeline configurations as version-controlled code files rather than through UI-based pipeline builders.

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A centralized storage system for build artifacts like compiled binaries, packages, and container images used in CI/CD pipelines.

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