DevOps Classroom notes 23/Feb/2024

Ansible Contd

Writing Playbooks

• Refer Here for official docs of Ansible Playbook
• Playbook defines the configuration management expressed in desired state using YAML
• Ansible Playbook organization
  
• In Ansible the smallest unit of execution is done by modules

First Playbook: Install tree

• Manual steps

sudo apt install tree -y

• Search for module for each step apt => ansible.builtin.apt
  
• Refer Here for the playbook and executed plabook
  

Exercise

• List out what are the areas which you need to fill in your resume

name
phone number
email 
professional summary
skillset
work experience
education

• We have list out names/keys then we need fill values

name = text
phone number = text
email text
professional summar text
skillset
   <skill name>: <skill values>
work experience: 
    experience list:
        company name
        duration
        role and responsibilities: text array/list

YAML

• It is collection of name value or key value pair used to represent data.
• Generally it is stored in files with extension .yml or .yaml

<name>: <value>

• Values can be of different types
  • Simple
    • text: can be represented in single or double quotes tool: ansible
    • number: numbers in non quote format age: 10
    • boolean: true, false, yes, no online: yes
  • Complex
    • list: array
      colors:
      – black
      – white
    • object/dictionary:
      
address:
flatno: 601
building: nilgiri
area: Ameerpet
city: Hyderabad
• Refer Here for YAML documentation from ansible
• Try to come up with a YAML format to describe your home town
• What does --- in yaml signify