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Mastering Python Networking

You're reading from   Mastering Python Networking Your one stop solution to using Python for network automation, DevOps, and SDN

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Product type Paperback
Published in Jun 2017
Publisher Packt
ISBN-13 9781784397005
Length 446 pages
Edition 1st Edition
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Author (1):
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Eric Chou Eric Chou
Author Profile Icon Eric Chou
Eric Chou
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Toc

Table of Contents (14) Chapters Close

Preface 1. Review of TCP/IP Protocol Suite and Python Language 2. Low-Level Network Device Interactions FREE CHAPTER 3. API and Intent-Driven Networking 4. The Python Automation Framework - Ansible Basics 5. The Python Automation Framework - Ansible Advance Topics 6. Network Security with Python 7. Network Monitoring with Python - Part 1 8. Network Monitoring with Python - Part 2 9. Building Network Web Services with Python 10. OpenFlow Basics 11. Advanced OpenFlow Topics 12. OpenStack, OpenDaylight, and NFV 13. Hybrid SDN

Ansible conditionals

Ansible conditionals are similar to programming conditionals, as they are used to control the flow of your playbooks. In many cases, the result of a play may depend on the value of a fact, variable, or the previous task result. For example, if you have a playbook for upgrading router images, you want to make sure the router image is presented before you move onto the play of rebooting the router.

In this section, we will discuss the when clause that is supported for all modules as well as unique conditional states supported in Ansible networking command modules, such as follows:

  • Equal (eq)
  • Not equal (neq)
  • Greater than (gt)
  • Greater than or equal (ge)
  • Less than (lt)
  • Less than or equal (le)
  • Contains

The when clause

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