Manifests
| Module name | Filepath to class or defined type | Class or defined type name |
| username-my_module | my_module/manifests/init.pp | my_module |
| username-my_module | my_module/manifests/other_class.pp | my_module::other_class |
| puppetlabs-apache | apache/manifests/security/rule_link.pp | apache::security::rule_link |
| puppetlabs-apache | apache/manifests/fastcgi/server.pp | apache::fastcgi::server |
What are Puppet Modules and how do they work?
You'll keep nearly all of your Puppet code in modules. Each module manages a specific task in your infrastructure, such as installing and configuring a piece of software. Modules serve as the basic building blocks of Puppet and are reusable and shareable.
What is the main class in puppet?
This class is the module's main interface point with Puppet. If possible, make the main class the only parameterized class in your module. Limiting the parameterized classes to only the main class means that you only have to include a single class to control usage of the entire module.
What is a module?
A module is a collection of manifests and data (such as facts, files, and templates), and they have a specific directory structure. Modules are useful for organizing your Puppet code, because they allow you to split your code into multiple manifests. It is considered best practice to use modules to organize almost all of your Puppet manifests.
What do I need to know before I start using puppet?
This guide is intended to provide an approachable introduction to module best practices. Before you begin, we recommend that you are familiar enough with Puppet that you have a basic understanding of the language, you know what constitutes a class, and you understand the basic module structure.
How do you use Puppet modules?
To create a module, you must create a directory (whose name matches your module name) in Puppet's modules directory, and it must contain a directory called manifests , and that directory must contain an init. pp file. The init. pp file must only contain a Puppet class that matches the module name.
How do you create a Puppet module?
Step 1 — Install Puppet in Standalone Mode. ... Step 2 - Install Apache and MySQL Modules. ... Step 3 - Create a New Module for WordPress. ... Step 4 - Create a Manifest to Install Apache and PHP. ... Step 5 - Create a File to Store Configuration Variables. ... Step 6 - Create a Manifest for MySQL. ... Step 7 - Download the Latest WordPress.More items...•
How do I use Puppet Forge modules?
6:016:53From Beginner to Pro : Using Puppet Forge Modules | packtpub.comYouTubeStart of suggested clipEnd of suggested clipFile run this command to install the generate puppet file gem. And run this command to generate theMoreFile run this command to install the generate puppet file gem. And run this command to generate the puppet file for a list of specified modules.
What is base line module path in Puppet?
The base modulepath is a list of global module directories for use with all environments. You can configure it with the basemodulepath setting in the puppet. conf file, but its default value is probably suitable. The default on *nix: $codedir/modules:/opt/puppetlabs/puppet/modules.
What is Puppet Forge?
Puppet Forge is a catalogue of modules created by Puppet, our partners, and community that helps IT ops practitioners supercharge and simplify their automation processes. With step-by-step guides and tutorials, Puppet Forge provides a platform for you to grow your skills with Puppet, whatever your current level.
How do you write a Puppet code?
0:0827:40How to write Puppet Manifests | Puppet Code Tutorial | IntellipaatYouTubeStart of suggested clipEnd of suggested clipCatalog which basically has to be executed or placed on the agents. Right and the way to define aMoreCatalog which basically has to be executed or placed on the agents. Right and the way to define a resource is like this so basically first you define the resource.
Where do I put puppet modules?
The puppet module install command installs a module and all of its dependencies. You can install modules from the Forge, a module repository, or a release tarball. By default, this command installs modules into the first directory in the Puppet modulepath, which defaults to $codedir/environments/production/modules .
What is site PP in puppet?
The Puppet site manifest (site. pp) is the main file that Puppet uses to define global system configuration.
What is a class in puppet?
Classes are named blocks of Puppet code that are stored in modules and applied later when they are invoked by name. You can add classes to a node's catalog by either declaring them in your manifests or assigning them from an external node classifier (ENC).
What is Puppet node?
A node definition, also known as a node statement, is a block of Puppet code that is included only in matching nodes' catalogs. This allows you to assign specific configurations to specific nodes. Put node definitions in the main manifest, which can be a single site. pp file, or a directory containing many files.
What is hiera in Puppet?
Hiera is a built-in key-value configuration data lookup system, used for separating data from Puppet code. About Hiera. Puppet's strength is in reusable code. Code that serves many needs must be configurable: put site-specific information in external configuration data files, rather than in the code itself.
Where is Puppet code stored?
puppetlabs/etc/code. Windows: %PROGRAMDATA%\PuppetLabs\code (usually C:\ProgramData\PuppetLabs\code )
How do you start a Puppet?
CONTENTSBefore You Begin. Create your Linodes.Puppet Master. Install the Puppet Server Software. Configure the Server Software.Puppet Agents. Install Puppet Agent. Configure Puppet Agent. Generate and Sign Certificates.Add Modules to Configure Agent Nodes. Add a Limited User. Edit SSH Settings. Add and Configure IPtables.
What language does Puppet use?
Puppet itself is written in Ruby, while Facter is written in C++, and Puppet Server and Puppet DB are written in Clojure.
What is Puppet tool?
Puppet is an open source software configuration management and deployment tool. It's most commonly used on Linux and Windows to pull the strings on multiple application servers at once. But you can also use Puppet on several platforms, including IBM mainframes, Cisco switches, and Mac OS servers.
How do you write a Puppet manifest?
Configuration Management 101: Writing Puppet ManifestsUpdate the apt cache.Install Apache.Create a custom document root directory.Place an index. html file in the custom document root.Apply a template to set up our custom virtual host.Restart Apache.
What is puppet module?
Puppet - Module. In Puppet, a module can be defined as a collection of resources, classes, files, definition, and templates. Puppet supports easy re-distribution of modules, which is very helpful in modularity of code as one can write a specified generic module and can use it multiple times with very few simple code changes.
Where are puppet modules stored?
Puppet supports a different location for storing modules. Any module can be stored in different file system of any particular machine. However, all the paths where modules are stored must be specified in configuration variable known as modulepath which is in general, a path variable where Puppet scans for all module directories ...
Dependency management
Many modules depend on other modules to work properly. When you install a module using the Bolt command-line interface (CLI), Bolt automatically manages those dependencies for you.
Modulepath
The list of directories where Bolt looks for content is called the modulepath. Bolt always loads content from:
Compatibility with Bolt versions
Bolt 2.30.0 introduced module dependency management. The changes introduced by this feature affect:
What is a puppetlabs module?
A typical module contains a main module class, as well as classes for managing installation, configuration, and the running state of the managed software. The puppetlabs-ntp module provides examples of the classes in such a module structure.
What is the main class of a module?
The main class of any module shares the name of the module, but the file itself is named init.pp. This class is the module's main interface point with Puppet. If possible, make the main class the only parameterized class in your module. Limiting the parameterized classes to only the main class means that you only have to include a single class to control usage of the entire module. This class provides sensible defaults so that a user can get going by just declaring the main class with include module.
Why do we need to share modules?
Sharing modules allows other users to not only download and use your module to solve their infrastructure problems, but also to contribute their own improvements to your modules. Sharing modules fosters community among Puppet users , and helps improve the quality of modules available to everyone.
Why do you publish your modules on Forge?
Publish your modules on the Forge to share your modules with other Puppet users. Sharing modules allows other users to not only download and use your module to solve their infrastructure problems, but also to contribute their own improvements to your modules. Sharing modules fosters community among Puppet users, and helps improve the quality of modules available to everyone. To learn how to publish your modules to the Forge, see the module publishing documentation.
What is a good module?
A good module has only one area of responsibility. For example, the module addresses installing MySQL, but it doesn't install other programs or services that require MySQL. Ideally, a module manages a single piece of software from installation through setup, configuration, and service management.
When you plan your module, what should you consider?
When you plan your module, consider what task your module will accomplish and what functions it requires in your Puppet environment. Many users have 200 or more modules in an environment, so simple is better. For more complex needs, create multiple modules.
Why do classes not automatically contain the classes they declare?
Classes do not automatically contain the classes they declare, because classes can be declared in several places via include and similar functions. If your classes contain the subordinate classes, it makes it easier for other modules to form ordering relationships with your module.
Module Configuration
Modules Source
- Puppet supports a different location for storing modules. Any module can be stored in different file system of any particular machine. However, all the paths where modules are stored must be specified in configuration variable known as modulepathwhich is in general, a path variable where Puppet scans for all module directories and loads them up whe...
Module Naming
- Puppet follows the same naming standards of a particular module wherein the module name must be normal words, matching [-\\w+] (letter, word, number, underscore and dashes) and not containing the namespace separator: : or /. While it might be allowed regarding module hierarchies, for new modules it cannot be nested.
Module Internal Organization
- When the user creates a new module in Puppet, it follows the same structure and contains manifest, distributed file, plugins, and templates arranged in a specific directory structure as shown in the following code. Whenever a module is created, it contains init.pp manifest file at the specified fix location inside manifests directory. This manifest file is a default file which execute…
Module Lookup
- Puppet follows a pre-defined structure wherein it contains multiple directories and subdirectories in a defined structure. These directories contain different kind of files which are required by a module to perform certain actions. A little behind-the-scenes magic makes sure that the right file is associated with the right context. All module searches are within the modulepath, a colon-sep…