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Chef Infrastructure Automation Cookbook Second Edition

You're reading from   Chef Infrastructure Automation Cookbook Second Edition Over 80 recipes to automate your cloud and server infrastructure with Chef and its associated toolset

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Product type Paperback
Published in May 2015
Publisher
ISBN-13 9781785287947
Length 278 pages
Edition 1st Edition
Tools
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Author (1):
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Matthias Marschall Matthias Marschall
Author Profile Icon Matthias Marschall
Matthias Marschall
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Table of Contents (9) Chapters Close

Preface 1. Chef Infrastructure FREE CHAPTER 2. Evaluating and Troubleshooting Cookbooks and Chef Runs 3. Chef Language and Style 4. Writing Better Cookbooks 5. Working with Files and Packages 6. Users and Applications 7. Servers and Cloud Infrastructure Index

Using search to find data bag items


You might want to execute code in your recipe multiple times—once for each data bag item, such as for each user or each HTTP end point.

You can use search to find certain data bag items and loop through search results to execute code multiple times.

Let's see how we can make our recipes more dynamic by searching for data bag items.

Getting ready

Follow the Getting ready and How to do it... (steps 1 to 4) sections in the Using data bags recipe in this chapter. You might want to add a few more HTTP end points to your data bag.

How to do it...

Let's create a recipe to search for data bag items and call the http_request resource for everyone:

  1. Edit the default recipe of my_cookbook to retrieve all HTTP hooks, which should be called by your recipe from your data bag:

    mma@laptop:~/chef-repo $ subl cookbooks/my_cookbook/recipes/default.rb
    
    search(:hooks, '*:*').each do |hook|
      http_request 'callback' do
        url hook['url']
      end
    end
  2. Upload your modified recipe to the...

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