December 2016
Intermediate to advanced
230 pages
4h 48m
English
Content preview from OpenStack Administration with Ansible 2 - Second EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Defining the inventory
The process of defining a collection of hosts to Ansible is named the inventory. A host can be defined using its fully qualified domain name (FQDN), local hostname, and/or its IP address. Since Ansible uses SSH to connect to the hosts, you can provide any alias for the host that the machine where Ansible is installed can understand.
Ansible expects the inventory file to be in an INI-like format and named hosts. By default, the inventory file is usually located in the /etc/ansible directory and will look as follows:
athena.example.com [ocean] aegaeon.example.com ceto.example.com [air] aeolus.example.com zeus.example.com apollo.example.com
Tip
Personally, I have found the default inventory file to be located in different places ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.