Definition
Ansible is an open-source automation tool that simplifies IT infrastructure management. It uses a declarative language, typically YAML, to define desired states for systems, and Ansible then works to bring those systems into the specified state. This is crucial on the job for automating tasks like software provisioning, configuration management, and application deployment, saving significant time and reducing errors. For example, an Ansible playbook could be written to ensure all web servers have the latest version of Apache installed and configured correctly. A common confusion is with tools that require agents on managed nodes, whereas Ansible is agentless, communicating over SSH or WinRM. Accurate exams for Ansible include the Red Hat Certified Specialist in Ansible Automation exam.