August 2015
Intermediate to advanced
168 pages
3h 32m
English
Content preview from Ansible Playbook Essentials
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Accessing facts for non-playbook hosts
In the earlier exercise, we launched the main playbook, which invokes all the other playbooks to configure the entire infrastructure. At times, we may just want to configure a portion of our infrastructure, in which case, we can just invoke the individual playbooks, such as lb.yml, www.yml, or db.yml. Let's try running the Ansible playbook just for the load balancers:
$ ansible-playbook -i customhosts lb.yml
Oops! It failed! Here is the snapshot of the snippet from the output:
Ansible exits with an error as it was not able to find a variable from the host, which is not part of the playbook anymore. Here is how ...
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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.