Ansible Study Guide ToC
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The document is an Ansible study guide that covers configuration management, lab exercises, Ansible terminology, YAML format, variables, inventory, and playbooks. It emphasizes the role of configuration management in maintaining system consistency and how Ansible simplifies tasks such as software installations across multiple machines using playbooks and an inventory of IP addresses. The guide serves as a comprehensive resource for learning and applying Ansible in IT environments.
Ansible Study Guide ToC
- 2. ANSIBLE __________________________________________________________________________________ Page 1 Ansible Table of Contents 1 Configuration Management..................................................................................................................2 Lab Exercises.......................................................................................................................................3 2 Overview of Ansible..............................................................................................................................9 Lab Exercises.....................................................................................................................................10 3 Ansible terminology............................................................................................................................14 4 YAML format.......................................................................................................................................17 5 Ansible Variables.................................................................................................................................20 6 Ansible Inventory................................................................................................................................23 7 Ansible Commands .............................................................................................................................24 Lab Exercises.....................................................................................................................................25 8 Ansible Playbooks ...............................................................................................................................27
- 3. ANSIBLE __________________________________________________________________________________ Page 2 1 CONFIGURATION MANAGEMENT Configuration management (CM) is a systems engineering process for establishing and maintaining consistency of a product's performance, functional, and physical attributes with its requirements, design, and operational information throughout its life. The CM process is widely used by organizations to manage changes throughout the system lifecycle of complex information systems. CM process is also used with IT service management as defined by ITIL, and with other domain models in the civil engineering and other industrial engineering segments such as roads, bridges, canals, dams, and buildings. Configuration management in terms of Ansible means that it maintains configuration of the product performance by keeping a record and updating detailed information which describes an enterprise’s hardware and software. Such information typically includes the exact versions and updates that have been applied to installed software packages and the locations and network addresses of hardware devices. For e.g. If you want to install the new version of Tomcat or WebLogic server on all of the machines present in your enterprise, it is not feasible for you to manually go and update each and every machine. You can install Tomcat or WebLogic in one go on all of your machines with Ansible playbooks and inventory written in the most simple way. All you have to do is list out the IP addresses of your nodes in the inventory and write a playbook to install Tomcat or WebLogic. Run the playbook from your control machine and it will be installed on all your nodes.