manifests/subsystems/resolver.pp


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class resolver($nameservers = hiera('nodo::resolver::nameservers', '')) {
  # DNS resolver
  case $nameservers {
    '': {
      package { 'resolvconf':
        ensure => present,
      }

      file { '/etc/resolv.conf':
        ensure  => '/etc/resolvconf/run/resolv.conf',
        require => Package['resolvconf'],
      }
    }
    default: {
      class { 'resolvconf':
        search      => $::fqdn,
        nameservers => $nameservers,
      }
    }
  }
}