Red Hat Certified Engineer (RHCE) Study Guide: Ansible Automation for the Red Hat Enterprise Linux 8 Exam (EX294)

Table of Contents
About the Author
About the Technical Reviewer
Introduction
Chapter 1: Understanding Ansible and the Red Hat RHCE
	Red Hat and Ansible
	Red Hat Certifications
		RHCSA
		RHCE
	Lab Systems
		Installing Ansible on CentOS 8
		Installing Ansible on Ubuntu 18.04
	Summary
Chapter 2: Working with the Ansible Configuration
	Ansible Configuration Hierarchy
		Printing the Ansible Configuration
		Creating a Basic Ansible Configuration File
	Summary
Chapter 3: Creating an Ansible Inventory
	Creating an Inventory
	Query Inventory Entries
		Listing Inventory Hosts Using Ansible
	Listing Hosts Using Ansible-Inventory
		Adding Host and Group Entries
	Discovering Hosts on Your Network
	Inventory Variables
	Summary
Chapter 4: Using Ad Hoc Commands and Ansible Preparation
	Testing Ansible
	Implementing Ansible Inventory Groups
		Preparing the User Account for Ansible
		Creating the User
		Allowing Passwordless Sudo Access
		SSH-Key Authentication
		Configuring the Final Changes
	Gaining Help on Modules
	Summary
Chapter 5: Writing YAML and Basic Playbooks
	Writing Simple YAML Playbooks
		Elements of a Playbook
		Our First Playbook
		Extending the Playbook Using Facts
		Installing Multiple Packages
	Improving Text Editors
	Going All GUI
	Summary
Chapter 6: Managing Users with Ansible Playbooks
	Playbook to Manage Users
		User Module Help
		Creating a Consistent User Account
		Using an Ansible Loop Control
		Deleting Users
		Using Variables and Logic with Playbooks
	Managing User Passwords
		Password Elements
		Authenticating Users
		Generating Passwords in Playbooks
	Using a Playbook to Create Managed Host Setup
	Summary
Chapter 7: Working with Variables and Facts
	Gathering Facts
	Printing OS Information
	Upgrading Systems
	Installing Apache
	Summary
Chapter 8: Working with Files and Templates
	The Copy Module
		Using SRC
		Content Is King
		Differing Fold Operators
	Editing Files in Place
	Using Templates
	Summary
Chapter 9: Managing Services Using Ansible
	The Service Module
	The Systemd Module
	Using Ansible Handlers
		Ensure SSHD Started and Enabled
		Edit SSHD Config
		The Handler: restart_sshd
		Handlers Do Not Run when They Are Not Notified
	Service Facts
	Summary
Chapter 10: Securing Sensitive Data with Ansible Vault
	Creating an External Variables File
	Encrypt Existing YAML File
	Creating New Encrypted Files
	Read Vault Password
	Summary
Chapter 11: Implementing a Full Apache Deployment
	Deploying Apache
		Apache Playbook
		Dedicated Server Page
		All About Firewalls
		The Apache Configuration File
	Configure Filesystem Security
	Full Apache Playbook
	Summary
Chapter 12: Simplifying Playbooks Using Roles
	Understanding Roles
	Creating Firewall Role
		Populating the Firewall Role
		Updating the Apache Playbook
		Configure Role for Web Content
		Creating the Apache Role
		Execution Order
	Summary
Chapter 13: Downloading Roles
	Roles and Collections
		Searching Roles From the CLI
	Installing the PHP Role
		Investigating PHP Role and Learning Better Coding
		Installing PHP
		Adding Extra PHP Modules
		Code Blocks and Extra Configuration for Ubuntu
	Install the Database Role
		Create Variable File
		Installing the MySQL Role and Implementing a Database Server
		Opening MySQL Firewall Port
	Summary
Chapter 14: Configuring Storage with Ansible
	Block Devices
		Creating Loopback Devices
	Partitioning Disks and Mounting Filesystems
	Managing Logical Volumes
	Managing VDO with Ansible
		Updating a Managed Host
		Updating the Controller
		Deploying VDO
	Archiving Files
	Maintenance of Filesystems
	Summary
Chapter 15: Managing Scheduled Tasks with Ansible
	Ad Hoc Linux Jobs with ATD
		Creating the Ansible Role to Manage ATD
		Playbook to Create Jobs in At
	Creating Regular Jobs with Cron
	Summary
Index