Ansible

1. Getting Started with Ansible

  • Overview on Ansible
  • Why use Ansible

2. Ansible Architecture

  • Control node
  • Managed nodes
  • Inventory
  • Modules
  • Tasks
  • Playbooks
  • Lab Environment

3. Pre-requisites to Setup Ansible

  • Control node requirements
  • Managed node requirements
  • Update /etc/hosts on all the hosts
  • Install mandatory pre-requisites on Ansible client nodes

4. Installing Ansible

  • Install using package manager on RHEL 8
  • Install using package manager on CentOS 8
  • Install using pip

5. Configuring Ansible

  • Create normal user
  • Configure password-less authentication
  • Verify password-less SSH authentication
  • Configure privilege escalation using sudo
  • Verify Ansible connectivity

Total Duration: 8 hrs

6. Ansible Configuration File (ansible.cfg)

  • [defaults] section
  • [ssh_connection] section
  • [persistent_connection] section
  • [colors] section

7. Using Ansible Ad-hoc Commands

  • Overview
  • Sample ad-hoc command examples
  • How Ansible works with modules
  • Control the number of hosts for parallel execution (forks)
  • Transfer file from Ansible Engine to Managed Nodes
  • Download file from managed nodes to controller node
  • Copy files locally on the remote server (managed node)
  • Create or Remove file and directory
  • Remove a file from the managed nodes
  • Execute commands with root privileges
  • Working with packages using yum module
  • Execute ad-hoc commands as different user

8. Ansible Inventory Files

  • Dynamic inventory
  • Static inventory
  • Provide hosts as an input argument
  • Groups in an inventory file
  • Groups of groups
  • Regular expressions with an inventory file
  • Variables in inventory

9. Working with Managed Nodes Without Python

Total Duration: 8 hrs

10. Working with Managed Nodes with Password (Not Passphrase)

11. Jinja2 Templates and Syntax

  • Variables
  • Use built-in filters
  • Configure VSFTPD using Jinja2 templates

12. Ansible Facts

  • System default facts
  • User defined facts

13. Ansible Variables and Data Types

  • Creating valid variable names
  • Built-in variables
  • Defining variables in inventory
  • Defining variable in project
  • Defining variables in playbook
  • Defining variables using command line
  • Accessing variables
  • Using register module to store output of any command
  • Using set_fact module to create a new variable
  • Prompt for user input with vars_prompt
  • Read and access variables from separate YAML or JSON file
  • Precedence

14. YAML Syntax in Ansible Playbooks

  • What is YAML?
  • YAML file formatting
  • Create or Modify .vimrc
  • Constructing your Ansible playbook

Total Duration: 8 hrs

15. Introduction to Ansible Playbooks

  • What are Ansible Playbooks
  • Examples
    • Example-1: Your first playbook to install single package
    • Example-2: Install multiple packages on different managed nodes
    • Example-3: Disable gathering facts module
    • Example-4: Assign custom name to the play and tasks
    • Example-5: Execute playbook as shell scripts
    • Example-6: Print debug message with playbooks
    • Example-7: Increase verbosity level of playbook
    • Example-8: Perform syntax check
    • Example-9: Perform dry run of playbooks

16. Use Visual Code Studio to Write Playbooks (GUI)

  • Download Visual Studio Code Repo
  • Access Visual Code Studio
  • Install Ansible Extension
  • Configure Visual Studio to use Ansible
  • Create playbook using Visual Studio

17. Using Operators in Ansible

  • Arithmetic Operators
  • Comparison Operators
  • Test Operators
  • Logical Operators

18. Ansible Conditional Statements

  • Using when statement
  • Using failed_when statement
  • Print message with fail
  • Using changed_when statement