December 2017
Intermediate to advanced
364 pages
7h 30m
English
Content preview from Security Automation with Ansible 2
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BlueGreen deployments
The concept of BlueGreen is attributed to Martin Fowler. A good reference is this article http://martinfowler.com/bliki/BlueGreenDeployment.html on it. The idea is to consider our current live production workload as blue. Now what we want to do is upgrade the application. So a replica of blue is brought up behind the same load balancer. The replica of the infrastructure has the updated application.
Once it is up and running, the load balancer configuration is switched from current blue to point to green. Blue keeps running in case there are any operational issues. Once we are happy with the progress, we can tear down the older host. The following playbook demonstrate this in a very simplistic manner:
- The first playbook ...
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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.