DevOps Intermediate

What is GitOps?

A practice where Git repositories serve as the single source of truth for both application code and infrastructure configuration.

GitOps extends Infrastructure as Code by using Git as the operational mechanism. All changes to infrastructure and applications go through Git pull requests. Automated agents (ArgoCD, Flux) ensure the live system matches the Git repository.

Benefits include audit trail (Git history), rollback (git revert), collaboration (pull requests), and consistency (single source of truth). GitOps is the dominant deployment pattern for Kubernetes-based environments.

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Environment Variable

A dynamic value stored outside the application code that configures behavior without hardcoding sensitive or environment-specific data.

A technique that allows enabling or disabling features in production without deploying new code, enabling safe rollouts and A/B testing.

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A high-performance web server and reverse proxy known for its stability, low resource usage, and ability to handle many concurrent connections.

The practice of collecting, analyzing, and alerting on system metrics and logs to ensure application health and performance.

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