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Puppetfile

Puppetfiles are a simple Ruby based DSL that specifies a list of modules to install, what version to install, and where to fetch them from. r10k can use a Puppetfile to install a set of Puppet modules for local development, or they can be used with r10k environment deployments to install additional modules into a given environment.

Unlike librarian-puppet, the r10k implementation of Puppetfiles does not include dependency resolution, but it is on the roadmap.

When directly working with Puppetfiles, you can use the r10k puppetfile subcommand to interact with a Puppetfile.

When using r10k's deploy functionality, interacting with Puppetfiles is handled on a case by case basis.

Because the Puppetfile format is actually implemented using a Ruby DSL any valid Ruby expression can be used. That being said, being a bit too creative in the DSL can lead to surprising (read: bad) things happening, so consider keeping it simple.

Commands

Puppetfile subcommands assume that the Puppetfile to operate on is in the current working directory and modules should be installed in the 'modules' directory relative to the current working directory.

Install or update all modules in a given Puppetfile into ./modules)

r10k puppetfile install

Verify the Puppetfile syntax

r10k puppetfile check

Remove any modules in the 'modules' directory that are not specified in the Puppetfile:

r10k puppetfile purge

Global settings

The following settings can be used to control how the Puppetfile installs and handles modules.

forge

The forge setting specifies which server that Forge based modules are fetched from. This is currently a noop and is provided for compatibility with librarian-puppet.

moduledir

The moduledir setting specifies where modules from the Puppetfile will be installed. This defaults to the modules directory relative to the Puppetfile. If the path is absolute then the modules will be installed to that absolute path, otherwise it's assumed that the moduledir setting should be relative and the modules will be installed in that directory relative to the Puppetfile.

The moduledir setting should be placed before any modules are declared.

Install modules to an absolute path:

moduledir '/etc/puppet/modules'

mod 'branan/eight_hundred' # will be installed into '/etc/puppet/modules/eight_hundred'

Install modules to a relative path:

moduledir 'thirdparty'

mod 'branan/eight_hundred' # will be installed into `dirname /path/to/Puppetfile`/thirdparty/eight_hundred

Note: support for a relative moduledir was added in r10k 1.4.0; the behavior of a relative moduledir path is undefined on earlier versions of r10k.

Module types

r10k can install Puppet modules from a number of different sources. Right now modules can be installed from the Puppet Forge, Git, or SVN.

Puppet Forge

Modules can be installed from the Puppet Forge.

If no version is specified the latest version available at the time will be installed, and will be kept at that version.

mod 'puppetlabs/apache'

If a version is specified then that version will be installed.

mod 'puppetlabs/apache', '0.10.0'

If the version is set to :latest then the module will be always updated to the latest version available.

mod 'puppetlabs/apache', :latest

Git

Git repositories that contain a Puppet module can be cloned and used as modules. When Git is used, the module version can be specified by using :ref, :tag, :commit, and :branch.

When a module is installed using :ref, r10k uses some simple heuristics to determine the type of Git object that should be checked out. This can be used with a git commit, branch reference, or a tag.

When a module is installed using :tag or :commit, r10k assumes that the given object is a tag or commit and can do some optimizations around fetching the object. If the tag or commit is already available r10k will skip network operations when updating the repo, which can speed up install times.

Module versions can also be specified using :branch to track a specific branch reference.

Examples

# Install puppetlabs/apache and keep it up to date with 'master'
mod 'apache',
  :git => 'https://github.com/puppetlabs/puppetlabs-apache'

# Install puppetlabs/apache and track the 'docs_experiment' branch
mod 'apache',
  :git => 'https://github.com/puppetlabs/puppetlabs-apache',
  :ref => 'docs_experiment'

# Install puppetlabs/apache and pin to the '0.9.0' tag
mod 'apache',
  :git => 'https://github.com/puppetlabs/puppetlabs-apache',
  :tag => '0.9.0'

# Install puppetlabs/apache and pin to the '83401079' commit
mod 'apache',
  :git    => 'https://github.com/puppetlabs/puppetlabs-apache',
  :commit => '83401079053dca11d61945bd9beef9ecf7576cbf'

# Install puppetlabs/apache and track the 'docs_experiment' branch
mod 'apache',
  :git    => 'https://github.com/puppetlabs/puppetlabs-apache',
  :branch => 'docs_experiment'

Control Repo Branch Tracking

Since r10k 2.4.0, the :branch option can be set to the special value :control_branch to indicate that the content should track a branch reference matching the containing control repo branch. For example, if a Puppetfile containing a Git content declaration is in the "testing" branch of a control repo, a setting of :control_branch will attempt to deploy that content from a "testing" branch of the content repo.

Additionally, you can specify a :default_branch option which is the branch reference that content will be deployed from if the the given :ref, :tag, :commit, or :branch option cannot be resolved and deployed. If the desired content cannot be resolved and no default branch is given, or if the default branch can also not be resolved, an error will be logged and the content will not be deployed or updated.

:control_branch Examples

# Deploy content from branch matching control repo branch.
mod 'hieradata',
  :git => 'git@git.example.com:organization/hieradata.git',
  :branch => :control_branch

# Track control branch and fall-back to master if no matching branch.
mod 'hieradata',
  :git => 'git@git.example.com:organization/hieradata.git',
  :branch => :control_branch,
  :default_branch => 'master'

SVN

Modules can be installed via SVN. If no version is given, the module will track the latest version available in the main SVN repository.

mod 'apache',
  :svn => 'https://github.com/puppetlabs/puppetlabs-apache/trunk'

If an SVN revision number is specified with :rev (or :revision), that SVN revision will be kept checked out.

mod 'apache',
  :svn => 'https://github.com/puppetlabs/puppetlabs-apache/trunk',
  :rev => '154'

mod 'apache',
  :svn      => 'https://github.com/puppetlabs/puppetlabs-apache/trunk',
  :revision => '154'

If the SVN repository requires credentials, you can supply the :username and :password options.

mod 'apache',
  :svn      => 'https://github.com/puppetlabs/puppetlabs-apache/trunk',
  :username => 'azurediamond',
  :password => 'hunter2'

Note: SVN credentials are passed as command line options, so the SVN credentials may be visible in the process table when r10k is running. If you choose to supply SVN credentials make sure that the system running r10k is appropriately secured.

Local

In the event you want to store locally written modules in your r10k-managed repository in the Puppetfile managed path, you can use the :local type.

For instance, if you have a Git repository with the following structure:

# tree -L 2
.
├── environment.conf
├── modules
│   └── local_module
└── Puppetfile

4 directories, 2 files

And you want to prevent local_module from being removed, you can add a 'local' module in your Puppetfile:

mod 'local_module', :local => true

# Include your other modules as normal
mod 'branan/eight_hundred'
mod 'puppetlabs/apache'

If you run r10k against this Git branch, you'll get the following:

# tree -L 2
.
├── environment.conf
├── modules
│   ├── apache
│   ├── eight_hundred
│   └── local_module
└── Puppetfile

4 directories, 2 files

Caveats

This is a workaround for r10k not being able to determine that modules created via VCS should not be purged, but is not meant to be a long term solution. The general practice around having local and remote modules in the same Git repository is to move modules versioned into a separate directory, like so:

# tree -L 2
.
├── environment.conf
├── site-modules
│   └── local_module
├── modules
│   ├── apache
│   └── eight_hundred
└── Puppetfile

4 directories, 2 files

Moving modules stored in the Git repository into a separate directory will remove the need to have Puppetfile entries for every locally versioned Puppet module.

For more information see the FAQ entry on managing internal and external modules in the same directory.

Per-Item Install Path

Git and SVN content types support installing into an alternate path without changing the value of moduledir by specifying an 'install_path' option:

# This will install the 'apache' module into 'external/apache'.
mod 'apache',
  :git => 'git@github.com:puppetlabs/puppetlabs-apache.git',
  :install_path => 'external'

The given 'install_path' can be an absolute path or a path relative to the base of the environment. Note that r10k will exit with an error if you attempt to set the 'path' option to a directory outside of the environment.

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