In previous tutorials we introduced Ansible and we discussed Ansible loops. This time we learn the basic usage of some modules we can use inside playbooks to perform some of the most common system administration operations.
YAML is a data serialization language. The name itself is a recursive acronym which stands for YAML Ain’t Markup Language. It is specifically designed to be human-friendly, easy to read and write, to represent settings and data structures and to work well with modern programming languages.
In a previous article we talked about Ansible, a very useful provisioning free and open source software written in Python, which we can use to automate tasks on multiple machines. We saw how to install it on some of the most used Linux distributions and the basic concepts behind its usage.