Red Hat Certified Engineer (Rhce) Study Guide: Ansible Automation for the Red Hat Enterprise Linux 8 Exam (Ex294) (Paperback)

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.

閱讀本書的材料，以準備 RHCE 考試 EX294，並學習如何在您自己的環境中使用 Ansible 提高系統管理生產力。

本書涵蓋了考試的所有目標，並進一步擴展，確保您知道如何使用 Ansible 來管理 Linux。本書使用基於 Red Hat 的 CentOS 發行版和 Ubuntu，而不是使用單一的 Red Hat 發行版。通過使用這兩個發行版，您將了解到 Ansible 的強大功能以及如何輕鬆處理多個平台，這對於您在實際世界中理解 Ansible 至關重要。

本書假設您對 Ansible 沒有任何先前的知識，但對於從命令行進行 Linux 系統管理有一些了解。您將學習如何管理安裝有不同發行版的 Linux 系統，包括 CentOS Enterprise Linux 8 和 Ubuntu 18.04。您將能夠使用命令行中的即席命令以及創建可靠重播的 Ansible playbook 來管理這些系統。為了節省您需要創建的代碼，您將學習如何使用 Ansible Galaxy 搜索並下載預先編寫的角色和集合，以管理您的 Linux 安裝的元素。通過閱讀本書，您將能夠撰寫高效且有效的 YAML playbook 來管理您的整個系統。

您將學到以下內容：

- 準備系統，以便在遠程使用 Ansible 時可以使用無密碼訪問
- 使用即席命令快速配置系統
- 正確使用和格式化 YAML 文件
- 創建隨著經驗發展而變得更加複雜的 playbook
- 確保在配置更改時重新啟動服務

本書適合以下讀者：

- 想要準備 RHCE 考試 EX294 的人
- 想要學習如何使用 Ansible 提高系統管理生產力的讀者
- 本書將幫助您為考試做好準備，同時滿足您實際生活中的管理需求。

Andrew Mallett is a well-known Linux consultant and trainer, and his YouTube Channel has over 65K subscribers and more than 1,000 videos. Working mainly online now, he has authored courses on both Pluralsight and Udemy, and regularly teaches classes online to a worldwide audience. Andrew is familiar with Linux and UNIX and has worked with them for over 20 years. Scripting and automation is one of his passions as he is inherently lazy and will always seek the most effective way of getting the job done. The Urban Penguin, his alter ego, is a UK-based company where he creates his work and currently employs five people.

Andrew Mallett 是一位知名的 Linux 顧問和培訓師，他的 YouTube 頻道擁有超過 65,000 名訂閱者和超過 1,000 個影片。他目前主要在線上工作，並在 Pluralsight 和 Udemy 上撰寫課程，定期在線上向全球觀眾授課。Andrew 熟悉 Linux 和 UNIX，並在這方面工作超過 20 年。腳本編寫和自動化是他的熱情之一，因為他天生懶惰，總是尋求最有效的方式來完成工作。他的另一個身份 "The Urban Penguin" 是一家位於英國的公司，他在那裡創作他的作品，目前雇用了五名員工。