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

Book Description

Study the material in this book to prepare for the RHCE exam EX294 and to learn how using Ansible within your own environment improves system administration productivity.

This book covers all of the objectives of the exam and extends further, ensuring that you know how to use Ansible to manage Linux. The book uses CentOS, a Red Hat-based distribution, and Ubuntu instead of using a single Red Hat distribution. By using the two distributions, you will understand the power of Ansible and how easily you can deal with multiple platforms, which is crucial for your understanding of Ansible in the real world.

The book assumes no previous knowledge of Ansible but some knowledge of Linux system administration from the command line. You will learn how to manage Linux systems that are installed with different distributions, including CentOS Enterprise Linux 8 and Ubuntu 18.04. You will be able to manage these systems using ad hoc commands from the command line as well as creating Ansible playbooks that can be replayed reliably many times. To save on the code that you have to create, you will learn how to use Ansible Galaxy to search for and download roles and collections that are pre-written to manage elements of your Linux installations. By the end of this book, you will be able to write efficient and effective YAML playbooks to manage your entire estate.

What You Will Learn

• Prepare systems so that password-less access can be used with Ansible remotely
• Use ad hoc commands to quickly configure systems
• Use and format YAML files correctly
• Create playbooks that grow in their complexity as your experience develops
• Ensure that services are restarted on configuration changes

Who This Book Is For

Those who want to prepare for the RHCE exam EX294 and readers who want to learn how to use Ansible to improve the productivity of their system administration. This book will help you prepare yourself for the exam as well as your real-life administration needs.

中文：

书名：Red Hat认证工程师(RHCE)学习指南：适用于Red Hat Enterprise Linux 8考试的自动化(EX294)

学习本书中的材料，为RHCE考试EX294做准备，并了解在您自己的环境中使用Ansible如何提高系统管理效率。

这本书涵盖了考试的所有目标，并进一步扩展，确保您知道如何使用Ansible来管理Linux。这本书使用了CentOS，一个基于Red Hat的发行版，以及Ubuntu，而不是使用单一的Red Hat发行版。通过使用这两个发行版，您将了解Anable的强大功能以及如何轻松地处理多个平台，这对于您在现实世界中理解Anable至关重要。

本书假定您以前没有Ansible的知识，但有一些从命令行进行Linux系统管理的知识。您将学习如何管理安装了不同发行版的Linux系统，包括CentOS Enterprise Linux8和Ubuntu 18.04。您将能够使用以下工具管理这些系统临时临时从命令行执行命令，以及创建可可靠多次重播的Anable剧本。为了节省您必须创建的代码，您将学习如何使用Ansible Galaxy来搜索和下载预先编写的用于管理Linux安装元素的角色和集合。在本书结束时，您将能够编写高效和有效的YAML攻略来管理您的整个资产。

你将学到什么

• 为系统做好准备，以便远程使用无密码访问
• 使用临时临时提供快速配置系统的命令
• 正确使用和格式化YAML文件
• 创建随体验发展而增加复杂性的攻略
• 确保在配置更改时重新启动服务

Who This Book Is For

那些想要准备RHCE EX294考试的人，以及想要学习如何使用ANSPLE来提高系统管理效率的读者。这本书将帮助你为考试做准备，以及你现实生活中的管理需要。