You must create the module directory structure in the pre-defined module directory of puppet.conf.

For example, let's say we want to pass a host file to the servers.

 mkdir –p /etc/puppet/environments/production/modules/my_hosts/files
 mkdir –p /etc/puppet/environments/production/modules/my_hosts/manifests

manifests - holds init.pp and any other configuration. init.pp - is the core of the module files - holds any files we wish to serve as part of our module templates - contains any templates our module might use

 vi /etc/puppet/environments/production/modules/my_hosts/manifests/my_hosts.pp

class my_hosts {

    file { 'hosts':
    owner => 'root',
    group => 'root',
    mode => '0440',
    path => '/etc/hosts',
    ensure => file,
    source => 'puppet://environments/production/modules/my_hosts/files/hosts'

    }

}