Прочесть переменные из файла

 user { 'ivanov_i':
                ensure           => 'present',
                home             => '/dev/null',
                shell            => '/bin/false',
                password         => 'pass123',
                groups           => ['nogroup'],
                comment          => 'ivanov_i',
}
        

exec {"/bin/bash -c '(echo pass123; echo pass123) | smbpasswd -s -a ivanov_i'":
                path => ['/usr/bin', '/usr/sbin', '/bin'],
                user => 'root',
                unless => 'id ivanov_i',
        }

...
ivanov_i staff pass123
petrov_p boss pass456
...