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Learning Ansible 2

You're reading from   Learning Ansible 2 Learn everything you need to manage and handle your systems with ease with Ansible 2 using this comprehensive guide

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Product type Paperback
Published in Nov 2016
Publisher
ISBN-13 9781786464231
Length 266 pages
Edition 2nd Edition
Tools
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Author (1):
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Fabio Alessandro Locati Fabio Alessandro Locati
Author Profile Icon Fabio Alessandro Locati
Fabio Alessandro Locati
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Table of Contents (11) Chapters Close

Preface 1. Getting Started with Ansible FREE CHAPTER 2. Automating Simple Tasks 3. Scaling to Multiple Hosts 4. Handling Complex Deployment 5. Going Cloud 6. Getting Notifications from Ansible 7. Creating a Custom Module 8. Debugging and Error Handling 9. Complex Environments 10. Introducing Ansible for Enterprises

Nagios


Nagios is one of the most used tools for controlling the status of services and servers. Nagios is capable of regularly auditing the state of servers and services, and notifying users in case of problems. If you have Nagios in your environment, you need to be very careful when you administer your machines, because in cases where Nagios finds servers or services in an unhealthy state, it will start sending e-mails, SMS messages, and calls to your whole team. When you run Ansible scripts against nodes that are controlled by Nagios you have to be even more careful, because you risk e-mails, SMS messages, and calls being triggered during the night or other inappropriate times. To avoid this, Ansible is able to notify Nagios beforehand, so that Nagios does not send notifications in that time window even if some services are down (for instance, because they are rebooted) or other checks fail.

In this example, we are going to stop a service, wait for 5 minutes, then start it again since this...

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