August 2015
Intermediate to advanced
168 pages
3h 32m
English
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Chapter 7. Node Discovery and Clustering
For most real-world scenarios, we would need to create a cluster of compute nodes with the applications running on top, which are linked together. For example, the WordPress site that we have been building requires web servers and databases connected together.
Clustered infrastructure has a topology where one class of nodes should be able to discover information about the different, or the same, class of servers. For example, the WordPress application servers need to discover information about database servers, and load balancers need to know about the IP address/hostname of each web server that it's serving traffic to. This chapter focuses on what primitives Ansible offers to group together nodes and discover ...
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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.