DevOps Bootcamp - Introduction to DevOps

Source: My notes from DevOps course by TechWorld with Nana

Software Development Life Cycle

• Software development has many roles: Plan > Implement > Test > Deploy > Maintain - for complete software development process:
  • Programming
    • Developers, maybe teams per feature, different languages, create and fix features
  • Testing
    • Developers, testers, test new features, verify old functionality, automated tests
  • Release of Software
    • Build, deploy on servers, upgrade existing software
  • Operations
    • Run software in production
• People tend to know their own area. Traditional Development vs Operations
  • Need releases, no downtime
• DevOps engineers must know each concept

Waterfall vs. Agile

• Waterfall - plan everything before as requirements > development > testing > fixes > operations, prepare deployment
  • Each step take months / years
  • Ineffective process, room for miscommunication
  • Slow requirements and little feedback
• Agile
  • Dev-test in cycles delivering features, immediate feedback
  • Faster development and deployment
  • Frameworks:
    • Scrum
    • Kanban
  • Continuous delivery and deployment/integration
  • DevOps implements many practices of agile