dhcp

Table of Contents

1. Description
2. Setup - The basics of getting started with dhcp
   • What dhcp affects
   • Setup requirements
   • Beginning with dhcp
3. Usage - Configuration options and additional functionality
4. Reference - An under-the-hood peek at what the module is doing and how
5. Limitations - OS compatibility, etc.
6. Development - Guide for contributing to the module

Description

DHCP puppet module to preapare dhcp linux server with failover option. This module has been prepared on Debian 8.8 (Jessie) and Puppet 4.10 environment.

Setup

puppet module install intelligsystems-dhcp

What dhcp affects

• List of files and directories:

.
├── examples
│   ├── failover.pp
│   ├── hosts.pp
│   ├── init.pp
│   └── subnet.pp
├── files
├── Gemfile
├── LICENSE
├── manifests
│   ├── config.pp
│   ├── init.pp
│   ├── install.pp
│   ├── params.pp
│   ├── service.pp
│   └── tests.pp
├── metadata.json
├── Rakefile
├── README.md
├── spec
│   ├── classes
│   │   └── init_spec.rb
│   └── spec_helper.rb
└── templates
    └── dhcpd_conf.erb

• It requires puppetlabs-stdlib, version_requirement: >= 1.0.0.
• Attention!!! This module broadcasts IP addresses. It can provide a lot of changes in your network. Please make sure that you know what DHCP server does.

Setup Requirements

• Puppet.
• Linux system with root privileges.

Beginning with dhcp

The very basic steps needed for a user to get the module up and running.

include ::dhcp

Usage

Simple example how to use this module:

class { 'dhcp':
  domain_name         => 'example.org',
  domain_name_servers => [ 'ns1.example.org', 'ns2.example.org' ],
  subnet              => {
    '10.10.10.0 netmask 255.255.255.0' => {
      'range'                    => '10.10.10.5 10.10.10.10',
      'option routers'           => '10.10.10.1',
      'option broadcast-address' => '10.10.10.255'
    }
  },
}

Example how to use this module with failover option:

node 'node1.example.org' {
  class { 'dhcp':
    domain_name_servers => [ '192.168.50.249', '192.168.50.250' ],
    failover            => [
      {
        'peer'         => 'primary',
        'peer address' => '192.168.50.243'
      }
    ],
    subnet              => {
      '192.168.50.0 netmask 255.255.255.0' => {
        'range'                    => '192.168.50.100 192.168.50.199',
        'option routers'           => '192.168.50.1',
        'option broadcast-address' => '192.168.50.255'
      }
    },
  }
}
node 'node2.example.org' {
  class { 'dhcp':
    domain_name_servers => [ '192.168.50.249', '192.168.50.250' ],
    failover            => [
      {
        'peer'         => 'secondary',
        'peer address' => '192.168.50.245'
      }
    ],
    subnet              => {
      '192.168.50.0 netmask 255.255.255.0' => {
        'range'                    => '192.168.50.100 192.168.50.199',
        'option routers'           => '192.168.50.1',
        'option broadcast-address' => '192.168.50.255'
      }
    },
  }
}

Reference

Classes:

• dhcp::init
• dhcp::params
• dhcp::install
• dhcp::config
• dhcp::service

Facts:

• osfamily
• ipaddress
• domain

Limitations

This module has been tested on Ubuntu 17.04, Debian 8 and CentOS 7 distribution already. It will be testing soon on another systems.

Development

Soon...

Release Notes.

dhcp 0.1.0 version:

• base module

dhcp 0.1.1 version:

• puppet-lint fix
• modified README

dhcp 0.1.2 version:

• modified README

• replaced all scope variables $:: with the $facts[]

• added reverse compatibility for puppet 2.7.20

• replaced File[dhcp::dhcp_conf] to File[dhcp::dhcpd_conf] in manifest/service.pp

• modified templates/dhcpd_conf.erb to avoid add failover option to subnet without failover 'primary' or 'secondary' option (see changelog)

• Relaeases

• See changelog