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Ansible Galaxy

Ansible Galaxy is Ansible’s official community hub for sharing Ansible roles. A role is the Ansible way of bundling automation content and making it reusable.

If you’re not familiar with the Ansible role concept, think of include files used in a programming language. An include file allows the programmer to organize code into reusable modules. Code can be organized into smaller files and grouped by subject matter or function. These discrete pieces of code can then be included as needed into larger programs like building blocks.

A role is similar. Instead of creating giant playbooks with hundreds of tasks we can use roles to organize tasks, breaking them apart into smaller more discrete units of work. But a role is more than just an include file. A role is all the tasks, variables and handlers needed to complete the unit of work. This allows a role to be completely self contained or encapsulated and completely reusable.

Using roles also allows us to think about node configuration in terms of modeling. For example, given a set of nodes that should be web servers we can simply apply a web server role to them. We don’t have to think about or write all the tasks needed to configure web servers. All the details are already encapsulated in a web server role – a role you downloaded from Galaxy.


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