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Learning Ansible 2 - Second Edition by Fabio Alessandro Locati

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What is Ansible?

Ansible is an agent-less IT automation tool developed in 2012 by Michael DeHaan, a former Red Hat associate. The Ansible design goals are for it to be: minimal, consistent, secure, highly reliable, and easy to learn. The Ansible company has recently been bought out by Red Hat and now operates as part of Red Hat, Inc.

Ansible primarily runs in push mode using SSH, but you can also run Ansible using ansible-pull, where you can install Ansible on each agent, download the playbooks locally, and run them on individual machines. If there is a large number of machines (large is a relative term; in our view, greater than 500 and requiring parallel updates), and you plan to deploy updates to the machines in parallel, this might be the right ...

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