DevOps Intermediate

What is GitHub Actions?

A CI/CD platform integrated into GitHub that automates build, test, and deployment workflows using YAML configuration.

GitHub Actions triggers workflows on events (push, pull request, schedule, manual). Workflows are defined in .github/workflows/*.yml files with jobs, steps, and actions. The marketplace offers thousands of reusable actions.

Features include matrix builds (test across multiple OS/versions), secrets management, artifact storage, environment deployments, and self-hosted runners. Free tier includes generous minutes for public repositories.

Related Terms

A structured analysis conducted after an incident to understand what happened, why, and how to prevent recurrence — without assigning blame.

A communication mechanism that enables asynchronous message passing between services, decoupling producers from consumers.

Container Orchestration

The automated management of containerized applications including deployment, scaling, networking, and health monitoring across clusters.

Immutable Infrastructure

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

Artifact Repository

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

Service Discovery

A mechanism that automatically detects and tracks the network locations of service instances in distributed systems.

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