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Red Hat Enterprise Linux Server Cookbook

You're reading from   Red Hat Enterprise Linux Server Cookbook Over 60 recipes to help you build, configure, and orchestrate RHEL 7 Server to make your everyday administration experience seamless

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Product type Paperback
Published in Dec 2015
Publisher
ISBN-13 9781784392017
Length 250 pages
Edition 1st Edition
Tools
Concepts
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Authors (2):
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Jakub Gaj Jakub Gaj
Author Profile Icon Jakub Gaj
Jakub Gaj
William Leemans William Leemans
Author Profile Icon William Leemans
William Leemans
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Toc

Table of Contents (12) Chapters Close

Preface 1. Working with KVM Guests FREE CHAPTER 2. Deploying RHEL "En Masse" 3. Configuring Your Network 4. Configuring Your New System 5. Using SELinux 6. Orchestrating with Ansible 7. Puppet Configuration Management 8. Yum and Repositories 9. Securing RHEL 7 10. Monitoring and Performance Tuning Index

Creating a template for a kickstart file


A template is one of the core modules of Ansible. It is used to easily generate files (for example, configuration files) based on a common set of facts. It uses the Jinja2 template engine to interpret template files.

For this recipe, we'll use a simple kickstart script that is generic enough to deploy any host. Refer to Chapter 2, Deploying RHEL "En Masse", to find out about kickstart files.

Getting ready

The facts that we need for this host are repo_url, root_password_hash, ntp_servers, timezone, ipv4_address, ipv4_netmask, ipv4_gateway, and dns_servers.

How to do it…

Create the kickstart file in your playbook's template folder (~/playbooks/templates/kickstart/rhel7.ks) with the following content:

install
url --url={{ repo_url }}
skipx
text
reboot
lang en_US.UTF-8
keyboard us
selinux --enforcing
firewall --enabled --ssh
rootpw –iscrypted {{ root_password_hash }}
authconfig --enableshadow --passalgo=sha512
timezone --utc --ntpservers {{ ntp_servers|join...
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