Configuration Management With Ansible Practical Hand-ons

Learn how to install and use Ansible

- Install Ansible using your package manager

- Set up passwordless authentication to communicate with servers

Set up passwordless authentication for Ansible

- Generate SSH key using SSH-keygen command

- Copy public key to target server's authorized keys file

Ansible ad hoc commands can be used for simple tasks without writing playbooks

- Ansible Playbook is a file used to write ansible tasks

- Ansible ad hoc commands can be run from CLI without writing playbooks

Ansible ad hoc commands are useful for executing one or two tasks on target servers.

- Ansible ad hoc commands are simple and easy to execute.

- Ansible Playbooks are used for executing multiple tasks on target servers.

- Ansible provides documentation for all its modules and their arguments.

Learn how to group servers and execute tasks on specific servers using Ansible

- Group servers in the inventory file and execute tasks on specific groups

- Use become root to execute Ansible Playbooks as root user

Writing a simple Ansible playbook to install and start Nginx

- Use hyphens to indicate a YAML file and start a playbook

- Tasks can be executed using shell commands or Ansible modules

Learn how to execute Ansible Playbooks

- Use the ansible-playbook command to run Playbooks

- Gather facts, install packages, and start services using Playbooks

Learn Ansible and Ansible Roles for efficient playbook writing

- Ansible can be used to execute playbooks and write custom modules

- Terraform is a better tool for infrastructure creation, while Ansible is better for configuration management

Segregate and improve efficiency by creating roles in Ansible

- Roles allow for structured and efficient Ansible playbooks

- Roles contain folders for tasks, templates, files, handlers, tests, vars, defaults, and meta

Ansible roles are used to organize playbooks and make them reusable.

- Roles consist of various folders like tasks, handlers, files, templates, etc.

- Ansible interview questions cover roles, handlers, and complicated scenarios.