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DevOps Intermediate

What is Ansible?

An agentless automation tool for configuration management, application deployment, and task automation using YAML playbooks.

Ansible automates IT tasks using simple, human-readable YAML files called playbooks. It connects to servers via SSH (no agent needed) and executes tasks in order. Playbooks describe the desired state of systems.

Key concepts include inventory (target hosts), roles (reusable task sets), modules (pre-built actions), and Galaxy (community content). Ansible is idempotent — running the same playbook twice produces the same result.

Related Terms

Feature Flag
A technique that allows enabling or disabling features in production without deploying new code, enabling safe rollouts and A/B testing.
Service Mesh
An infrastructure layer that handles service-to-service communication, providing load balancing, encryption, and observability.
Health Check
An endpoint or mechanism that reports whether an application is running correctly and ready to handle requests.
Canary Deployment
A deployment strategy that gradually rolls out changes to a small subset of users before deploying to the entire infrastructure.
Monitoring
The practice of collecting, analyzing, and alerting on system metrics and logs to ensure application health and performance.
Kubernetes ConfigMap
A Kubernetes object that stores non-sensitive configuration data as key-value pairs, injected into pods as environment variables or files.
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