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You're reading from  Chef Cookbook - Third Edition

Product typeBook
Published inFeb 2017
Reading LevelIntermediate
PublisherPackt
ISBN-139781786465351
Edition3rd Edition
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Matthias Marschall
Matthias Marschall
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Matthias Marschall

Matthias Marschall is a Software Engineer "made in Germany". His four children make sure that he feels comfortable in lively environments, and stays in control of chaotic situations. A lean and agile engineering lead, he's passionate about continuous delivery, infrastructure automation, and all things DevOps. In recent years, Matthias has helped build several web-based businesses, first with Java and then with Ruby on Rails. He quickly grew into system administration, writing his own configuration management tool before migrating his whole infrastructure to Chef in its early days. In 2008, he started a blog (http://www.agileweboperations.com) together with Dan Ackerson. There, they have shared their ideas about DevOps since the early days of the continually emerging movement. You can find him on Twitter as @mmarschall. Matthias holds a Master's degree in Computer Science (Dipl.-Inf. (FH)) and teaches courses on Agile Software Development at the University of Augsburg. When not writing or coding, Matthias enjoys drawing cartoons and playing Go. He lives near Munich, Germany.
Read more about Matthias Marschall

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Using data bags


There are situations where you have data that you neither want to hardcode in your recipes nor store as attributes in your cookbooks. Users, external servers, or database connections are examples of such data. Chef offers so-called data bags to manage arbitrary collections of data, which you can use with your cookbooks.

Let's see how we can create and use a data bag and its items.

Getting ready

In the following example, we want to illustrate the usage of data bags by sending HTTP requests to a configurable HTTP endpoint. We don't want to hardcode the HTTP endpoint in our recipe. That's why we store it as a data bag item in a data bag.

To be able to follow along with the example, you'll need an HTTP endpoint.

One way to establish an HTTP endpoint is to just run sudo nc –l 80 on any server that is accessible by your node and use its IP address below.

Another way to establish an HTTP endpoint, which shows us the requests we make, is a free service called RequestBin. To use it, follow...

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Chef Cookbook - Third Edition
Published in: Feb 2017Publisher: PacktISBN-13: 9781786465351

Author (1)

author image
Matthias Marschall

Matthias Marschall is a Software Engineer "made in Germany". His four children make sure that he feels comfortable in lively environments, and stays in control of chaotic situations. A lean and agile engineering lead, he's passionate about continuous delivery, infrastructure automation, and all things DevOps. In recent years, Matthias has helped build several web-based businesses, first with Java and then with Ruby on Rails. He quickly grew into system administration, writing his own configuration management tool before migrating his whole infrastructure to Chef in its early days. In 2008, he started a blog (http://www.agileweboperations.com) together with Dan Ackerson. There, they have shared their ideas about DevOps since the early days of the continually emerging movement. You can find him on Twitter as @mmarschall. Matthias holds a Master's degree in Computer Science (Dipl.-Inf. (FH)) and teaches courses on Agile Software Development at the University of Augsburg. When not writing or coding, Matthias enjoys drawing cartoons and playing Go. He lives near Munich, Germany.
Read more about Matthias Marschall