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#davidb-dhcpd

This is the dhcpd module.

License

Apache License, Version 2.0

Support

Please log tickets and issues at our Projects site

Contributions

Many thanks to Jonathan Gazeley for latest commits.

Example usage

First create the global config, this will install package if not installed. Currently, only Redhat and derivates are supported.

  class { 'dhcpd':
    global_config => {
      'options'         => {
        'domain-name-servers'  => [ '10.0.2.15', '10.0.2.16' ],
        'netbios-name-servers' => [ $::ipaddress_eth0 ],
        'domain-name'          => $::domain,
      },
      config            => {
        'server-identifier' => $::ipaddress,
        'log-facility'      => 'local6',
      },
      include           => [
        '/etc/dhcpd.conf.others',
        '/etc/named-dhcpd.key',
      ],
      ddns_domainname   => $::domain,
      ddns_update_style => 'interim',
      ddns_zones        => { "${::domain}."           => { 'primary' => '10.0.2.15', 'key' => 'DHCP_UPDATER' },
                             '23.20.10.in-addr.arpa.' => { 'primary' => '10.0.2.15', 'key' => 'DHCP_UPDATER' },
                           },
      authoritative     => true,
      omapi_port        => 9991,
      omapi_key         => 'DHCP_UPDATER',
    },
  }

DDNS updates are supported, but you still have to manage security key (through the inclusion of an external file)

  • include statement allows you to add external managed files
  • options hash configuration global dhcpd options
  • omapi supported through omapi_items

Supported DHCP items:

  • class
  • subnet
  • pool
  • ranges
  • shared-network
  • failover

Example of dhcp class

  dhcpd::class { 'newpcboot':
    match_if    => 'substring (option vendor-class-identifier, 0, 9) = "PXEClient"',
    filename    => '/pxelinux.0',
    next_server => $::ipaddress_eth0,
  }

Example of subnet with two pools

  dhcpd::subnet { 'First subnet':
    network     => '10.20.22.0',
    netmask     => '255.255.254.0',
    options     => {
      'routers'              => '10.20.22.254',
    },
    pools       => {
      '1st pool' => {
        allow_members_of            => ['newpcboot'],
        allow_unknown_clients       => true,
        ranges                      => ['10.20.22.8 10.20.22.9'],
        default_lease_time          => '3600',
        max_lease_time              => '3600',
      },
      '2nd pool' => {
        allow_members_of            => ['newpcboot'],
        allow_unknown_clients       => true,
        ranges                      => ['10.20.22.12 10.20.22.40'],
        default_lease_time          => '3600',
        max_lease_time              => '3600',
      },
    },
  }

Another subnet with only range

  dhcpd::subnet { 'other subnet':
    ranges  => ['192.168.100.1 192.168.100.5'],
    network => '192.168.100.0',
    netmask => '255.255.255.0',
    options => {
      'domain-name-servers' => ['192.168.100.250'],
      'routers'             => ['192.168.100.254'],
      'domain-name'         => 'example.com',
    },
  }

Another example with shared-network

  dhcpd::shared { 'workstations-and-printers': }
  
  dhcpd::subnet { 'shared subnet 1':
    ranges  => ['192.168.101.1 192.168.101.5'],
    network => '192.168.101.0',
    netmask => '255.255.255.0',
    options => {
      'domain-name-servers' => ['192.168.101.250'],
      'routers'             => ['192.168.101.254'],
      'domain-name'         => 'shared1-example.com',
    },
    shared_network_name  => 'workstations-and-printers',
    failover_peer        => 'dhcp-srv',
  }
  dhcpd::subnet { 'shared subnet 2':
    network => '192.168.102.0',
    netmask => '255.255.255.0',
    options => {
      'domain-name-servers' => ['192.168.102.250'],
      'routers'             => ['192.168.102.254'],
      'domain-name'         => 'shared2-example.com',
    },
    pools       => {
      'shared 1st pool' => {
        allow_members_of            => ['newpcboot'],
        allow_unknown_clients       => true,
        ranges                      => ['192.168.102.5 192.168.102.5'],
        default_lease_time          => '3600',
        max_lease_time              => '3600',
      },
    },
    shared_network_name  => 'workstations-and-printers',
    failover_peer        => 'dhcp-srv',
  }

Declaration of local subnet

  dhcpd::subnet { 'local_interface':
    network     => $::network_eth0,
    netmask     => $::netmask_eth0,
  }

Configuration of DHCP failover

Use this class to configure DHCP failover. For full details of what these parameters do, refer to the ISC DHCP documentation.

Most of these parameters have sensible defaults but you must provide a value for peer, primary, and peer_address.

  class { 'dhcpd::failover':
    peer                     => 'dhcp-srv',
    primary                  => true,
    address                  => $::fqdn,
    port                     => 647,
    peer_address             => 'dhcp-srv2.example.com',
    peer_port                => 647,
    max_response_delay       => 60,
    max_unacked_updates      => 10,
    load_balance_max_seconds => 3,
    mclt                     => 1800,
    split                    => 128,
  }

Changelog

0.4.0

  • New defined type dhcpd::option
  • Add class_cfg_prepend and class_cfg_append parameters to dhcpd::class defined type for complex workstation class configuration