You're reading from Mastering Ansible, 4th Edition - Fourth Edition

Product typeBook

Published inDec 2021

PublisherPackt

ISBN-139781801818780

Edition4th Edition

Tools

Ansible Ansible

Concepts

Configuration Management

Authors (2):

James Freeman

Jesse Keating

View More author details

In-place upgrades

The first type of deployment that we'll cover is in-place upgrades. This style of deployment operates on an infrastructure that already exists, in order to upgrade the existing application. This model is a traditional model that was used when the creation of new infrastructure was a costly endeavor, in terms of both time and money.

A general design pattern to minimize the downtime during this type of upgrade is to deploy the application across multiple hosts, behind a load balancer. The load balancer will act as a gateway between users of the application and the servers that run the application. Requests for the application will come to the load balancer, and, depending on the configuration, the load balancer will decide which backend server to direct the requests to.

To perform a rolling in-place upgrade of an application deployed with this pattern, each server (or a small subset of the servers) will be disabled at the load balancer, upgraded...

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Mastering Ansible, 4th Edition - Fourth Edition

Published in: Dec 2021Publisher: PacktISBN-13: 9781801818780

Authors (2)

James Freeman

James Freeman is an accomplished IT professional with over 25 years' experience in the technology industry. He has more than a decade of first-hand experience in solving real-world enterprise problems in production environments using Ansible, open source, and AWS. As part of this work, he frequently introduces Ansible as a new technology to businesses and CTOs for the first time. In addition, he has co-authored five books and one video training course on Ansible, facilitated bespoke Ansible workshops and training sessions, and presented at both international conferences and meetups on Ansible.
Read more about James Freeman

Jesse Keating

Jesse Keating is an accomplished Ansible user, contributor, and presenter. He has been an active member of the Linux and open source community for over 15 years. He has firsthand experience involving a variety of IT activities, software development, and large-scale system administration. He has presented at numerous conferences and meetups, and has written many articles on a variety of topics.
Read more about Jesse Keating

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