DevOps Classroom notes 20/Mar/2026

Github Actions

• Runners in Github Actions: on a larger note github offers two types of infra
  • Microsoft Hosted / Github Hosted Runners
  • Self Hosted Runners
• Github Actions Plan according to runners

Explain Github Actions pricing w.r.t to runners

I need to understand both free and paid plans

• OS for runners:
  • For Github Runners we have
    • windows
    • linux
    • mac
  • For self hosted runners we can use any os.

Lets create a Github action for a java project on ubuntu using github actions

• we will be using the following repo Refer Here
• Fork this repo
• Lets configure actions (Watch classroom recording)
• All the github actions will be stored in .github/workflows

YAML

• Github ACtions are written in YAML format
• YAML is collection of name value pairs
• YAML is a data description format
• in yaml the basic structure is <name>: <value>
• Yaml has indentation similar to python.
• Data i.e. values will come in following types
  • number
  • text
  • boolean
  • list/array
  • object/dictionary/map
• number

year: 2026
month: 3
price: 30.99

• text: text can be in quotes (single, double) or any alpha characters in value without quotes

month: march
month: 'march'
month: "march"
month: '3'

• multi line text

example_literal: |
  Line one
  Line two

example_folded: >
  Line one
  Line two

• boolean

insured: True
insured: yes
insured: False
insured: no

• list:

accounts: ["sbi", "icici"]
# or
accounts:
- sbi
- icici
# or
account:
  - sbi
  - icici

• map/object/dictionary

address:
  flatno: 601-A
  building: nilgiri
  area: ameerpet

• A yaml file will have .yml or .yaml as extensions
• Lets try to create a yaml about our

title: 'Stolen Focus: Why You Can't Pay Attention--And How to Think Deeply'
author: Johann Hari
isbn: 978-1526620217
publisher: Bloomsbury Publishing
published: 2023
options:
  - paperback
  - hardcover
  - kindle
  - epub
  - pdf
awards:
  - NEW YORK TIMES BESTSELLER 
  - WINNER OF THE PORCHLIGHT BUSINESS BOOK AWARD 
Reviews:
  Wall Street Journal: ONE OF THE BEST BOOKS OF THE YEAR
  The Telegraph:  one book about how the modern world is driving us crazy
  Oprah: exactly what the world needs right now
  The Irish Times: Noted its amiable accessibility and compared it favorably as a more readable companion to Shoshana Zuboff’s Surveillance Capitalism.

• Other book example

title: 'Dopamine Detox: A Short Guide to Remove Distractions and Get Your Brain to Do Hard Things'
author: Thibaut Meurisse
isbn: 978-1735061702
publisher: Independently Published
published: 2020
options:
  - paperback
  - kindle
  - epub
  - pdf
awards:
  - AMAZON BESTSELLER (SELF-HELP CATEGORY)
Reviews:
  Amazon Readers: Practical and easy-to-follow guide for improving focus and discipline
  Goodreads: Highly rated for its simplicity and actionable advice
  Medium: A concise framework for breaking bad habits and regaining mental clarity
  Self-Help Blogs: Popular among productivity enthusiasts for quick implementation

• books

---
- title: "Stolen Focus: Why You Can't Pay Attention--And How to Think Deeply"
  author: Johann Hari
  isbn: 978-1526620217
  publisher: Bloomsbury Publishing
  published: 2023
  options:
    - paperback
    - hardcover
    - kindle
    - epub
    - pdf
  awards:
    - NEW YORK TIMES BESTSELLER 
    - WINNER OF THE PORCHLIGHT BUSINESS BOOK AWARD 
  Reviews:
    Wall Street Journal: ONE OF THE BEST BOOKS OF THE YEAR
    The Telegraph:  one book about how the modern world is driving us crazy
    Oprah: exactly what the world needs right now
    The Irish Times: Noted its amiable accessibility and compared it favorably as a   more readable companion to Shoshana Zuboff’s Surveillance Capitalism.
- title: 'Dopamine Detox: A Short Guide to Remove Distractions and Get Your Brain to Do Hard Things'
  author: Thibaut Meurisse
  isbn: 978-1735061702
  publisher: Independently Published
  published: 2020
  options:
  - paperback
  - kindle
  - epub
  - pdf
  awards:
  - AMAZON BESTSELLER (SELF-HELP CATEGORY)
  Reviews:
    Amazon Readers: Practical and easy-to-follow guide for improving focus and discipline
    Goodreads: Highly rated for its simplicity and actionable advice
    Medium: A concise framework for breaking bad habits and regaining mental clarity
    Self-Help Blogs: Popular among productivity enthusiasts for quick implementation

• Generally tools publish schema or reference for yaml files which we need to fill.