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README.md

####Table of Contents
1. [Overview](#overview)
2. [Module Description - What the module does and why it is useful](#module-description)
3. [Setup - The basics of getting started with kafka](#setup)
* [What kafka affects](#what-kafka-affects)
* [Setup requirements](#setup-requirements)
* [Beginning with kafka](#beginning-with-kafka)
4. [Usage - Configuration options and additional functionality](#usage)
5. [Reference - An under-the-hood peek at what the module is doing and how](#reference)
5. [Limitations - OS compatibility, etc.](#limitations)
6. [Development - Guide for contributing to the module](#development)
##Overview
The kafka module for managing the installation and configuration of [Apache Kafka](http://kafka.apache.org)
[![Puppet Forge](http://img.shields.io/puppetforge/v/puppet/kafka.svg)](https://forge.puppetlabs.com/puppet/kafka) [![Build Status](https://travis-ci.org/voxpupuli/puppet-kafka.png?branch=master)](https://travis-ci.org/voxpupuli/puppet-kafka)
##Module Description
The Kafka module for managing the installation and configuration of Apache Kafka: it's brokers, producers and consumers.
##Setup
###What kafka affects
Installs the Kafka package and creates a new service.
###Beginning with Kafka
To successfully install Kafka using this module you need to have Apache Zookeeper already running at localhost:2181. You can specify another Zookeeper host:port configuration using the config hash of the kafka:broker class.
The default configuration installs Kafka 0.8.2.1 binaries with Scala 2.10
```puppet
class { 'kafka': }
```
If you want a Kafka broker server that connects to zookeeper listenting on port 2181:
```puppet
class { 'kafka::broker':
config => { 'broker.id' => '0', 'zookeeper.connect' => 'localhost:2181' }
}
```
##Usage
You can specify different Kafka binaries packages versions to install. Please take a look at the different Scala and Kafka versions combinations at the [Apache Kafka Website](http://kafka.apache.org/downloads.html)
### Installing Kafka version 0.8.2.2 with scala 2.10
We first install the binary package with:
```puppet
class { 'kafka':
version => '0.8.2.2',
scala_version => '2.10'
}
```
Then we set a minimal Kafka broker configuration with:
```puppet
class { 'kafka::broker':
config => { 'broker.id' => '0', 'zookeeper.connect' => 'localhost:2181' }
}
```
###Classes and Defined Types
####Class: `kafka`
One of the primary classes of the kafka module. This class will install the kafka binaries
**Parameters within `kafka`:**
#####`version`
The version of kafka that should be installed.
#####`scala_version`
The scala version what kafka was built with.
#####`install_dir`
The directory to install kafka to.
#####`mirror_url`
The url where the kafka is downloaded from.
#####`config`
A hash of the configuration options.
#####`install_java`
Install java if it's not already installed.
####Class: `kafka::broker`
One of the primary classes of the kafka module. This class will install a kafka broker.
**Parameters within `kafka::broker`:**
#####`version`
The version of kafka that should be installed.
#####`scala_version`
The scala version what kafka was built with.
#####`install_dir`
The directory to install kafka to.
#####`mirror_url`
The url where the kafka is downloaded from.
#####`config`
A hash of the configuration options.
#####`install_java`
Install java if it's not already installed.
##Reference
###Classes
####Public Classes
* [`kafka`](#class-kafka-broker): Guides the basic installation of kafka binaries
* [`kafka::broker`](#class-kafka-broker): Guides the basic installation of a kafka broker
####Private Classes
* [`kafka::broker::config`] Manages all the default configuration of the kafka application
* [`kafka::broker::install`] Manages the installation of the kafka packages
* [`kafka::broker::service`] Manages the kafka server service
##Limitations
This module is tested on the following platforms:
* CentOS 5
* CentOS 6
* Ubuntu 12.04
* Ubuntu 14.04
It is tested with the OSS version of Puppet only.
##Development
###Contributing
Please read CONTRIBUTING.md for full details on contributing to this project.

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