February 2017
Intermediate to advanced
440 pages
8h 45m
English
Content preview from Infrastructure as Code CookbookBecome 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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Simulating a networked three-tier architecture app with Vagrant
Vagrant is a great tool to help simulate systems in isolated networks, allowing us to easily mock architectures found in production. The idea behind the multiple tiers is to separate the logic and execution of the various elements of the application, and not centralize everything in one place. A common pattern is to get a first layer that gets the common user requests, a second layer that does the application job, and a third layer that stores and retrieves data, usually from a database.
In this simulation, we'll have the traditional three tiers, each running CentOS 7 virtual machines on their own isolated network:
- Front: NGINX reverse proxy
- App: a Node.js app running on two nodes
- Database ...
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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.