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

Product typeBook
Published inDec 2021
PublisherPackt
ISBN-139781801818780
Edition4th Edition
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Authors (2):
James Freeman
James Freeman
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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
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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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Comparing values

Comparisons are used in many places with Ansible. Task conditionals are comparisons. Jinja2 control structures, such as if/elif/else blocks, for loops, and macros, often use comparisons; some filters use comparisons as well. To master Ansible's usage of Jinja2, it is important to understand what comparisons are available.

Comparisons

Like most languages, Jinja2 comes equipped with the standard set of comparison expressions you would expect, which will render a Boolean true or false.

The expressions in Jinja2 are as follows:

If you have written comparison operations in almost any other programming language (usually in the form of an if statement), these should all seem very familiar. Jinja2 maintains this functionality in templates, allowing for the same powerful comparison operations you would expect in conditional logic from any good programming language.

Logic

Sometimes, performing a single...

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Mastering Ansible, 4th Edition - Fourth Edition
Published in: Dec 2021Publisher: PacktISBN-13: 9781801818780

Authors (2)

author image
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

author image
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