[main]
    environments = production,development,staging

    # Where Puppet stores dynamic and growing data.
    # The default value is '/var/puppet'.
    vardir = /var/lib/puppet

    # The Puppet log directory.
    # The default value is '$vardir/log'.
    logdir = /var/log/puppet

    # Where Puppet PID files are kept.
    # The default value is '$vardir/run'.
    rundir = /var/run/puppet

    # Where SSL certificates are kept.
    # The default value is '$confdir/ssl'.
    ssldir = $vardir/ssl

[puppetd]
    environment = staging

    # The file in which puppetd stores a list of the classes
...