Ansible Linux Users & Groups By Examples
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Ansible Linux Users & Groups By Examples

20+ Automation Examples on Linux Users and Groups Operation for Modern IT Infrastructure

About the Book

Learn the Ansible automation technology with some real-life examples.

Every successful IT department needs automation nowadays for bare metal servers, virtual machines, could, containers, and edge computing. Automate your IT journey with Ansible automation technology.

I'm going to teach you example by example how to manage users and groups in Linux and macOS operation systems are the most common System Administrator tasks.

Each of the 20+ lessons summarizes a specific scenario about user and groups management: creating a user, creating a new pair of a suitable SSH key and a home directory, changing a password and specifying the encryption cipher, removing the home directory and the mailbox, or assigning a special `nologin` shell for temporarily disabled users. Another user scenario that happens very often is when you need only to temporarily disable and enable a user. Another useful administrator tool is group management to assign permission to resources to a bunch of users.

You could easily customize the example code with your username and use it in your everyday journey without any additional effort.

There are some Ansible codes usable in all the Linux systems, battle-tested for RedHat-like and Debian-like systems.

Are you ready to automate your day with Ansible?

Examples in the book are tested with the latest version of Ansible 2.9+ and Ansible Core 2.11+.

About the Author

Luca Berton
Luca Berton

Luca Berton is an Ansible Automation Engineer of Red Hat, based in Brno - Czech Republic. With more than 15 years of experience as a System Administrator, he has strong expertise in Infrastructure Hardening and Automation. Enthusiast of the Open Source supports the community sharing his knowledge in different events of public access. Geek by nature, Linux by choice, Fedora of course.

Table of Contents

  • Introduction
    • Modern IT Infrastructure
    • Whois Luca Berton
  • Ansible For Beginners With Examples
    • What is Ansible
    • Getting Started
    • Inventory
    • Playbook
    • Variables
    • Facts and Magic Variables
    • Vault
    • Conditional
    • Loop
    • Handler
    • Role
    • Ansible Best Practices
  • Install Ansible
    • Ansible terminology - ansible vs ansible-core packages
    • How to install Ansible in RedHat Enterprise Linux (RHEL) 8 with Ansible Engine
    • How to install Ansible in Ubuntu 20.04
    • How to install Ansible in Fedora 36 - Ansible install
    • How to install Ansible in CentOS 9 Stream
    • How to install Ansible in Windows 11 WSL Windows Subsystem for Linux
    • How to install Ansible in macOS - Ansible install
    • How to install Ansible in SUSE Linux Enterprise Server (SLES) 15 SP3
    • How to install Ansible with PIP
    • How to install Ansible in RedHat Enterprise Linux (RHEL) 9 - Ansible install
    • How to install Ansible in Amazon Linux 2 (AWS EC2)
    • How to install Ansible in Debian 11
  • Ansible For Linux
    • Ansible terminology - ansible_hostname vs inventory_hostname vs ansible_fqdn
    • Three options to Safely Limit Ansible Playbooks Execution to a Single Machine
    • Ansible modules - command vs shell
    • Test host availability - Ansible module ping
    • How to print a text or a variable during the execution with Ansible
  • Ansible For Linux User Management
    • Ansible create a user account
    • Ansible remove user account
    • Ansible change user password
    • Ansible disable user account
    • Ansible enable user account
    • Ansible user password expiration
    • Ansible creates a group
    • Ansible deletes a group account
    • Ansible changes the User Primary Group on Linux
    • Ansible adds a user to a secondary group(s)
  • Ansible Playbook Code interact with Web Services API
  • Ansible Troubleshooting The Most Common Errors
    • Ansible troubleshooting - connection failed
    • Ansible troubleshooting - indentation error
    • Ansible troubleshooting - syntax error
    • Ansible troubleshooting - undefined variable
    • Ansible troubleshooting - invalid argument
    • Ansible troubleshooting - privilege escalation error
    • Ansible troubleshooting - missing sudo password and incorrect sudo password
    • Ansible troubleshooting - missing module parameter
    • Ansible troubleshooting - failure downloading
    • Ansible troubleshooting - chgrp failed
    • Ansible troubleshooting - not a valid attribute for a Play error
    • Ansible troubleshooting - fatal template error while templating string
    • Ansible troubleshooting - passwordless account
    • Ansible troubleshooting - user module password_expiry_min bug
    • Ansible troubleshooting - urlopen error
    • Ansible troubleshooting - destination does not exist
    • Ansible troubleshooting - This command has to be run under the root user
  • Thank you

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