Certificate in Ansible

TABLE OF CONTENT

Introduction

• Introduction to Ansible
• Ansible Core Versus Ansible Community
• How Ansible Works?

Environment Setup

• Launching Required Nodes / Servers for Ansible Setup
• Launching Ansible-Controller Node - CentOS9 Node from Windows WSL2
• Installing Ansible-Core on CentOS9 with Python Version 3.9.x
• Ansible Configuration to Work with Managed Nodes
• Why Ansible Is Called Agentless Tool
• Creating userId on Ansible Controller and Switching to ansadmin from userid
• Simple Ansible Architecture
• How to Get the Latest File or Directory from Current Location?

Ad-Hoc Commands with Modules

• Introduction to Ansible Ad-Hoc Commands with Modules | Commands for Modules
• Ansible Ad-Hoc Commands to Execute Any Unix/Linux Commands
• Handling Arguments with Quotations
• What Is the Backend Story to Execute Ansible Ad-Hoc Commands?

Ansible Ad-Hoc Command to Work with Files

• List of File Modules to Work with files|file, Copy, lineinfile, blockinfile...
• Ansible Ad-Hoc Commands with File Module to Create a File on Managed Nodes
• Ansible Ad-Hoc Commands with stat Module
• Ansible Ad-Hoc Commands with Copy Module
• Ansible Ad-Hoc Commands with lineinfile Module to Append/Replace/Delete Lines
• Ansible Ad-Hoc Command with Fetch Module to Download from Managed Nodes

Installing Packages on Different OS Families

• Ansible Ad-Hoc Commands with yum and apt Modules to Install Packages

Executing Ansible Ad-Hoc Commands on Ansible Controller Node or on Localhost

• Executing Ansible Ad-Hoc Commands on Ansible Controller Node Itself

Understanding the Output of Ansible Ad-Hoc Commands Output

• Why Ansible Operations or Tasks Are Called Idempotent?

Executing Ansible Ad-Hoc Commands with Your User ID and Password

• Executing Ansible Ad-Hoc Commands with Your Real-Time User ID and Password

Ansible Inventory File(s)

• Inventory File(s) to Work with Multiple Environments
• Types of Ansible Inventory Files

Ansible Configuration File(s)

• Multiple Locations of Ansible Configuration Files and Their Priority

Shell Scripts with Ansible Ad-Hoc Commands

• How to Use Ansible Ad-Hoc Commands in Shell Scripts

Ansible Facts

• Ansible Default Facts with setup Module
• How to Create Custom Facts Based on Requirement

Introduction to Playbooks

• Introduction to Playbooks and Why We Need Playbooks
• How to Use Visual Studio Code Editor to Develop Ansible Playbooks
• First Playbook
• Executing Playbooks on Ansible Controller Node Itself
• Commands to Verify the Playbook Syntax

Basic Concepts to Develop Playbooks

• Introduction to Ansible Custom Variables
• Data Types of Variables
• Data Structures of YAML Scripting
• Read Variable Values from a File
• Passing Variable(s) Value(s) from Command-Line
• Usage of vars_prompt Section in Playbooks
• host_vars and group_vars
• Debug Module with vars and msg Arguments

Registered and setfacts Variables

• Ansible Register Variable - To Capture the Output of a Task into Variable
• Ansible Set Fact Variables - Define or Redefine Variable(s) in Between the Tasks

Operations on Variables

• Types of Operators | Operations on Variables
• Arithmetic Operators
• Filters and Methods Usage to Manipulate Data - Variable Data or Direct Data
• Comparison Operators | Equal, Not-Equal, Greater, Lesser...
• Membership Operators
• Logical Operators
• Test Operators
• Operations on List or Sequence
• Operations on Strings
• Operations on Dictionaries or Maps
• Points to Remember

Conditional Statements

• Conditional Statement with when
• In-Line Conditional Statement with if-else

Ansible Playbooks to Practice on Basic Concepts

• Design Simple Arithmetic Calculator
• Simple Playbook to Find the Python Version
• Playbook to Find the Java Version
• Playbook to Execute Any Command

Ansible Facts (Default Facts) and Systemd Facts

• Working with Ansible Facts (Default Facts) Using Playbooks
• Service or Systemd Facts with service_facts Module
• inventory_hostname and hostvars

Usage of become and become_user

• Usage of become, become_user, and become_method

Installing Packages | Task Reusability with import_tasks and include_tasks

• Installing Given Package Based on OS Family
• Install a Package Based on Managed Nodes Package Managers
• Write a Playbook to Install Any Package(s)
• How to Reuse Ansible-Tasks with import_tasks and include_tasks

Handlers

• How to Use Handlers and When Handlers Execute

Usage of Tags to Execute Required Tasks

• How to Use Tags to Execute Tasks

Error Handling

• Error Handling | Part-1
• Error Handling with block and rescue and Also Grouping Multiple Tasks | Part-2

Ansible Logging

• Capturing the Output of Ansible Ad-Hoc Commands and Playbooks into a Log File

Usage of remote_src , deletegate_to, and run_once Options for Ansible Playbooks

• Install and Set JAVA_HOME as Environment Variable for All Applications
• Playbook to Set JAVA_HOME for Any Open JDK with Valid URL

Simple Real-Time Ansible Playbook

• Simple Real-Time Ansible Playbook with the Combination of Tags, Block and Handlers

Loops for Ansible Playbooks

• Introduction to Loops
• Loops to Work with List
• Installing Multiple Packages with Loops
• Loops to Work Dictionaries

Working with Templates

• Introduction to Template Module
• Template File with Variables, Conditions, and Loops

Introduction to Plugin

• What Is an Ansible Plugin and How to List Required Plugins?

Working with Third-Party or Ansible Community Collections or Modules

• Installing Required Collections or Required Module from Required Namespace

Ansible Dynamic Inventory with Plugins

• Ansible Dynamic Inventory for AWS with Plugin
• Ansible Dynamic Inventory and Working with Managed Nodes Using Default ec2-us

Ansible Roles

• Introduction to Ansible Roles

Ansible Vault

• How to Use Ansible Vault to Encrypt Secrets

Raw Module

• Working with Managed Nodes if Managed Nodes Are Installed with Python

Ansible Project Setup for Real Time to Work with Servers

• Different Cases to Work with Remote Servers or Managed Nodes
• Directory Structure for Real-Time Project
• Working with User ID and Password for Ansible Ad-Hoc Commands and Playbooks
• Working with SSH Keys for Ansible Ad-Hoc Commands and Playbooks