Mastering Ansible Administration: The 2026 Edition

Ansible automates infrastructure and software tasks with playbooks for provisioning, configuration, and deployment. As an open source infrastructure as code tool, it boosts efficiency, accuracy, consistency, and scalability across environments.

Explore the Ansible architecture with a control node pushing playbooks over ssh to managed nodes, using passwordless ssh, inventory, and modules to automate deployments.

Master YAML syntax to define Ansible playbooks with readable, versionable configurations. Learn key value pairs, lists, dictionaries, and the importance of indentation for inventories, tasks, and variables.

Create a free AWS account, launch three Linux EC2 instances for an Ansible lab, and configure passwordless SSH between the control and managed nodes.

learn how to set up ansible on linux control nodes, install python 3 and pip, enable passwordless ssh to managed nodes (including windows), and verify connectivity with inventories and ping.

Understand the heart of ansible by mastering playbooks, core components, and architecture, including yaml-based tasks, inventory, modules, roles, and templates for idempotent automation.

Explore the inventory file in Ansible, and learn how to define and group managed nodes, use host and group variables, and override the default inventory with the -i option.

Create and use an Ansible inventory file with web and db groups and a parent-child relation. Define host variables, run a playbook, and verify connectivity by listing and pinging hosts.

Learn to define ansible variables in playbooks or external files, use group_vars and host_vars, and manage dictionaries, lists, and special variables like inventory_hostname with -e precedence.

Understand how group_vars and host_vars define variables and overwrite each other in an Ansible lab, with development and testing inventories and host precedence shaping the final values.

Use modules as building blocks that run tasks on managed nodes, driven by playbooks from the control node, with modules like yum and copy installing packages and managing files.

Create a task and call modules in an Ansible playbook to install nginx on two managed nodes via an inventory and the yum module, then start and enable the service.