Ansible works by using a push-based model to automate tasks on remote systems. Here’s a brief overview of how it operates:
Inventory: Ansible uses an inventory file to define the hosts (servers) it will manage. This file can list individual hosts or groups of hosts.
Modules: Ansible has a variety of built-in modules that perform specific tasks, such as installing packages, copying files, or managing services. Users can also create custom modules.
Playbooks: Users write playbooks in YAML format to define the automation tasks. A playbook consists of one or more plays, each targeting a group of hosts and specifying the tasks to be executed.
Execution: When a playbook is executed, Ansible connects to the target hosts (via SSH for Linux/Unix or WinRM for Windows) and runs the specified tasks in the order defined in the playbook.
Idempotency: Ansible modules are designed to be idempotent, meaning that running the same playbook multiple times will not change the system state if it is already in the desired state.
Output: After execution, Ansible provides a summary of the results, indicating which tasks were successful, which changed the state, and any failures.
This architecture allows for efficient and repeatable automation across diverse environments.
