haveged

Table of Contents

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

Overview

Install and manage the haveged daemon.

Module Description

The haveged daemon provides a random number generator based on the HAVEGE (HArdware Volatile Entropy Gathering and Expansion) algorithm. This module provides a way of installing and setting up the daemon in your environment.

Setup

What haveged affects

Package, service and configuration files for the haveged daemon.

• On Debian based systems this includes the /etc/default/haveged file.

• On RedHat based systems the configuration is stored in the /etc/systemd/system/haveged.service.d/opts.conf file.

Setup Requirements

This module requires the stdlib module.

The haveged package is part of the EPEL yum repository, so this repository must be enabled on Enterprise Linux to be able to install the package.

Beginning with haveged

Declare the haveged class to run the haveged daemon with the default parameters.

class { 'haveged': }

This installs the haveged package and starts the service using default parameters.

See the following sections for a detailed description of the available configuration options.

Usage

Use a higher threshold of available entropy

class { 'haveged':
  write_wakeup_threshold => 2048,
}

Reference

See REFERENCE.md for the reference documentation.

Development

Feel free to send pull requests for new features and other operating systems.