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Mastering Puppet

Mastering Puppet

By : Thomas Uphill
3.9 (13)
Buy this Book
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Mastering Puppet

Mastering Puppet

3.9 (13)
By: Thomas Uphill
Buy this Book

Overview of this book

Presented in an easy-to-follow, step-by-step tutorial format and packed with examples, this book will lead you through making the best out of Puppet in an enterprise environment. If you are a system administrator or developer who has used Puppet in production and are looking for ways to easily use Puppet in an enterprise environment, this book is for you. This book assumes an intermediate knowledge of Puppet and is intended for those writing modules or deploying Puppet in an enterprise environment.
Table of Contents (12 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Dealing with Load/Scale
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1. Dealing with Load/Scale
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Divide and conquer
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Conquer by dividing
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Summary
2
2. Organizing Your Nodes and Data
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2. Organizing Your Nodes and Data
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Getting started
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Organizing the nodes with ENC
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Hiera
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Summary
3
3. Git and Environments
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3. Git and Environments
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Environments
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Git
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Git for everyone
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Summary
4
4. Public Modules
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4. Public Modules
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Getting modules
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Using GitHub for public modules
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Modules from the Forge
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Using librarian
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Using r10k
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Using modules
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Summary
5
5. Custom Facts and Modules
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5. Custom Facts and Modules
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Module manifest files
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Custom facts
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Summary
6
6. Custom Types
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6. Custom Types
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Parameterized classes
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Defined types
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Types and providers
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Summary
7
7. Reporting and Orchestration
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7. Reporting and Orchestration
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Turning on reporting
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Syslog
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Store
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IRC
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Foreman
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Puppet Dashboard
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Summary
8
8. Exported Resources
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8. Exported Resources
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Configuring puppetdb – using the forge module
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Manually installing puppetdb
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Exported resource concepts
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Simple example: a host entry
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Resource tags
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Putting it all together
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Summary
9
9. Roles and Profiles
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9. Roles and Profiles
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Design pattern
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Creating an example CDN role
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Dealing with exceptions
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Summary
10
10. Troubleshooting
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10. Troubleshooting
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Connectivity issues
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Catalog failures
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Debugging
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Summary
11
Index
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Index

Environments

When every node requests an object from the Puppet master, they inform the Puppet master of their environment. Depending on how the master is configured, the environment can change the set of modules, the contents of hiera, or the site manifest (site.pp). The environment is set on the agent in their puppet.conf file or on the command line with puppet agent --environment.

In addition, environment may also be set from both the ENC and the LDAP node terminus. In Puppet version 3, setting the environment from the ENC overrides the setting in puppet.conf. If no environment is set, then production, which is the default environment, is applied.

On the master, if a configuration block's name matches the environment's name, then the settings in that block will take effect for the nodes that use that environment.

Tip

Environment names cannot be the same as that of the main config blocks of the puppet.conf file (main, master, agent, and so on).

The configuration block can contain...

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