Puppet allows you to create environments with different manifest files for modules, nodes, and templates. In order to start using this feature, you’ll need to create a new set of modules, manifests, and templates directories in a subdirectory of /etc/puppet on the Puppet Master and then specify their location in a new stanza in your puppet.conf as follows:

[development]

modulepath = $confdir/environments/development/modules
manifest = $confdir/environments/development/manifests/site.pp
templatedir = $confdir/environments/development/templates

Once you’ve put some usable code in these directories, you can specify the new development for use on an agent node by either passing --environment development to puppetd on invocation, or by placing a new parameter in the agent’s puppet.conf [agent] stanza: