Book Image

Red Hat Enterprise Linux Server Cookbook

By : Jakub Gaj, Leemans
5 (1)
Book Image

Red Hat Enterprise Linux Server Cookbook

5 (1)
By: Jakub Gaj, Leemans

Overview of this book

Dominating the server market, the Red Hat Enterprise Linux operating system gives you the support you need to modernize your infrastructure and boost your organization’s efficiency. Combining both stability and flexibility, RHEL helps you meet the challenges of today and adapt to the demands of tomorrow. This practical Cookbook guide will help you get to grips with RHEL 7 Server and automating its installation. Designed to provide targeted assistance through hands-on recipe guidance, it will introduce you to everything you need to know about KVM guests and deploying multiple standardized RHEL systems effortlessly. Get practical reference advice that will make complex networks setups look like child’s play, and dive into in-depth coverage of configuring a RHEL system. Also including full recipe coverage of how to set up, configuring, and troubleshoot SELinux, you’ll also discover how secure your operating system, as well as how to monitor it.
Table of Contents (12 chapters)
11
Index

Defining a simple module to configure time


Modules are collections of manifests and files that define how to install and configure various components. Manifests contain the instructions to apply to a system's configuration. In this recipe, we'll create a simple module to install and configure the NTP daemon.

Getting ready

Puppet has a strict way of organizing modules. Your modules should always be stored in /etc/puppet/modules. Every module is a directory within this directory, containing the necessary directories that in turn contain manifests, files, templates, and so on.

How to do it…

In this recipe, we'll create the necessary directory structure, manifests, and files to configure your system's time. Perform the following steps:

  1. Create ntp/manifests in /etc/puppet/modules via the following command:

    ~]# mkdir -p /etc/puppet/modules/ntp/manifests
    
  2. Create ntp/templates to house all the templates used by the puppet module through the following:

    ~]# mkdir -p /etc/puppet/modules/ntp/templates
    
  3. Now...