Ansible introduction for RHEL8/CentOS8: Ansible Primer for Linux Administrators

Book Description

This training workbook is a comprehensive introduction to Ansible automation, suitable for CentOS 8.3 and RHEL 8.3.
This will give anyone a head start towards the RHCE certification, or indeed those who do not wish to become RHCE certified but would still like to understand the essentials of Ansible deployment and use.

The book covers the following topics:

• Installing the ansible software packages on RHEL and CentOS
• Preparing the ansible control node
• configuring ansible clients (SSH, Python, sudo, etc.) and testing access
• Ansible inventories of hosts and host groups
• running ad-hoc commands
• Ansible modules, for example ping, copy, yum, service, command, and others
• Creating and running Ansible playbooks, utilising variables, facts and debug.
• Using roles, in particular RedHat roles, for example network configuration and time server configuration.
• Accessing ansible documents for modules and roles.
• Overview of Ansible Tower

The notes also provide guidance for lab environment setup, plus how to obtain a free RHEL8 subscription.
All example playbooks are freely downloadable from our Github storage.
This book is a forerunner for a complete RHCE training workbook which will e published around May 2021.

中文：

书名：RHEL8/CentOS8的可能介绍：Linux管理员的可能入门

本培训手册是对Ansible自动化的全面介绍，适用于CentOS 8.3和RHEL 8.3。
这将让任何人在获得RHCE认证方面领先一步，或者实际上是那些不希望获得RHCE认证但仍然希望了解可用部署和使用的要点的人。

这本书涵盖了以下主题：

• 在RHEL和CentOS上安装Ansible软件包
• 准备Anable控制节点
• 配置可用客户端(SSH、Python、sudo等)和测试访问
• Ansible inventories of hosts and host groups
• 运行即席命令
• 可选模块，例如ping、复制、yum、服务、命令等
• 创建和运行Ansible攻略，利用变量、事实和调试。
• 使用角色，特别是RedHat角色，例如网络配置和时间服务器配置。
• 访问模块和角色的可修改文档。
• 安可普塔概述

这些说明还提供了实验室环境设置的指导，以及如何获得免费的RHEL8订阅。
所有示例剧本都可以从我们的Github存储空间免费下载。
这本书是一本完整的RHCE培训工作簿的先驱，将于2021年5月左右出版。