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Puppet master configuration

In order to use dynamic environments, your Puppet masters will need to be configured to load manifests and modules relative to the requested environment. The following settings should be configured in puppet.conf.

Puppet <= 3.4.x

In Puppet 3.4 and earlier, dynamic environments are achieved by interpolating the $environment variable in the modulepath, manifestdir, and manifest settings. When environments is loaded the settings are dynamically set based on the name of the environment, thus allowing environments to be created on the fly.

[master]
    modulepath = /etc/puppet/environments/$environment/modules:/etc/puppet/environments/$environment/dist

    # If you use a top level manifest dir
    manifestdir = /etc/puppet/environments/$environment/manifests
    # If you use a specific site wide manifest
    manifest = /etc/puppet/environments/$environment/manifests/nodes.pp

Puppet = 3.5.x

Puppet 3.5.0 adds initial support for "directory environments", where environments are created by enumerating directories in $environmentpath. This new configuration expect that all modules are in the root of the directories in the environment path.

[master]
# None of modulepath, manifestdir, or manifest should be enabled
# See http://docs.puppetlabs.com/puppet/latest/reference/environments.html#enabling-directory-environments
#   for more information on the changes
    environmentpath = $confdir/environments

Note that these settings go into the [master] section; you don't need to explicitly configure an environment section for each environment you want to use. (But you can if you want.)

Puppet >= 3.6.0

Puppet 3.6.0 adds more fine grained control over how directory environments are configured. Each directory based environment can have an environment.conf file in the root of that environment that can specify the manifest, modulepath, config_version, and environment_timeout for that specific environment.

# puppet.conf
[master]
# None of modulepath, manifestdir, or manifest should be enabled
# See http://docs.puppetlabs.com/puppet/latest/reference/environments.html#enabling-directory-environments
#   for more information on the changes
    environmentpath = $confdir/environments

# environment.conf
manifest  = site.pp
moduledir = modules:dist

A deployed environment with a Puppetfile will look something like this:

.
├── Puppetfile
├── environment.conf
├── dist
└── modules