Ansible Concepts

Question 1

what is the parameter ansible_host?

Answer 1

“ansible_host” is a inventory parameter, that is used to specify the host IP address or the FQDN

Question 2

List all the ansible inventory parameters?

Answer 2

ansible_host - IP address of the host
ansible_connection - ssh/winrm/localhost
ansible_port - 29/5986
ansible_user - root/administrator
ansible_ssh_pass - Password

Question 3

In what format are the ansible playbooks written in?

Answer 3

YAML. A playbook is a single YAML file containing a set of plays

Question 4

What is a play in Ansible playbook?

Answer 4

Play defines a set of activities (tasks) to be performed on a hosts or group of hosts

Question 5

What is a task (activity) in the definition of play in playbook?

Answer 5

Task is an action to be performed in a host or group of hosts. Eg.
Execute a command
Run a script
Install a package
Shutdown/restart

Question 6

Can you give an example of a playbook.yaml file?

Answer 6

• name: play1
  host: localhost
  tasks:
  
  • name: Execute command ‘date’
    command: date
  • name: Execute this script on the server
    script: test_script.sh
  • name: Install httpd server
    yum:
    name: httpd
    state: present
  • name: start web server
    service:
    name: httpd
    state: started

Question 7

What is the relation between the inventory file and the playbook.yml file?

Answer 7

The host name entered in the inventory file must match the host key value in the playbook yaml file

Question 8

How do you execute an ansible playbook?

Answer 8

ansible-playbook <playbook>
eg. ansible-playbook playbook.yaml</playbook>

Question 9

what are the 4 importants ansible concepts?

Answer 9

Ansible Inventory
Ansible playbooks
Ansible module
Ansible variables

Question 10

List some examples of Ansible Modules?

Answer 10

system
command
files
database
cloud
windows

Question 11

what is command module used for?

Answer 11

Command module is used to execute scripts, and run commands

Question 12

what is service module used for?

Answer 12

Maintaining the services in the system, like starting stopping

Question 13

What are variables in ansible?

Answer 13

Variables are used to store information that varies with each host