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DevOps Automation Cookbook by Michael Duffy

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Deploying a Java application to Tomcat with zero downtime using Ansible

Docker is not the only way to perform deployments using Jenkins, and indeed, for many organizations their container efforts are still in the nascent stages. For many, Java and Tomcat are still the mainstay of most platforms and will continue to be so for some considerable time.

Tomcat is now in its eighth version and is still one of the most common Java containers in use, both due to it's Open Source heritage and battle tested stability. Over time, it has also learned some interesting new tricks, with a particularly innovative one being a function called parallel deployment. Parallel deployment allows you to deploy a new version of an application alongside an existing one and ...

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