May 2015
Beginner to intermediate
182 pages
4h 27m
English
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High availability
Until now, the architecture discussed has added additional instances of services and balanced traffic across them. While HAProxy has monitors built into it to check the health of a host, this is only to know whether or not to send traffic to the host. It doesn't include any capability of recovering from failure.
To make the control and network tiers highly available, Pacemaker can be added to the cluster to monitor services, file systems, networking resources, and other resources that need to be made highly available. Pacemaker is capable of moving services from node to node in a pacemaker cluster and monitoring the nodes to know whether action needs to be taken to recover a particular resource or even one of the entire nodes. ...
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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.