Chapter 7: Configuration Management with Ansible

1. Configuration management is the process of controlling the configuration changes in a way such that the system maintains integrity over time.
2.  Agentless means that you don't need to install any special tool (an agent or daemon) in the server that is being managed.
3. Ansible, Chef, and Puppet.
4. An inventory is a file that contains a list of servers that are managed by Ansible.
5. An ad hoc command is a single command that is executed on servers, and playbooks are the whole configurations (sets of scripts) that are executed on servers.
6. An Ansible role is a well-structured playbook prepared to be included in the playbooks.  
7. Ansible Galaxy is a store (repository) for Ansible roles.