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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

Tasks blocks


In Ansible 2.0 blocks have been made available. Blocks allow you to group tasks in a logical way and they can also help for a better error handling. The majority of properties you can add to a standard task, you can also add it to the blocks. You may need to perform a yum task to install NTPd and enable of the service only if the machine is CentOS. To do so, the following code can be used:

    tasks:
    - block:
       - name: Ensure NTPd is present
       yum:
         name: ntpd
         state: present
       - name: Ensure NTPd is running
       service:
         name: ntpd
         state: started
       enabled: True
     when: ansible_distribution == 'CentOS'

As you can notice, the when clause has been applied to the block so all tasks within the block will be performed only if the when clause will be true.

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