Day 1: Fundamentals of DevOps

What is DevOps ?

• DevOps is a culture/ practice, that improves the organization's ability to deliver the applications.

• It is not only about improving the delivery, it is also about:

  • Automation

  • Quality

  • Continuous Monitoring/ Observability

  • Continuous Testing

• So, DevOps is a process of improving the application delivery but ensuring that the process is automated, monitored, tested and able to produce quality output.

Why DevOps ?

World before DevOps

• Developers write the code (make changes to application) and pushes it to a central repository

• System Admins create a server and deploys the modified application on this server

• Testers will test this application

• Build and Release Engineers promote the application to either Staging or Production environment, based on the testing phase

• Production environment requires an application server, which is created by Server Admins

Disadvantages of this methodology

• Too many people involved, more prone to error

• Low quality of service for customers

• Bug fixes, error resolution takes a lot of time

• Lot of Manual Labor

• This led to the rise of a new methodology i.e, DEVOPS

How to Introduce Yourself ?

• Tell about your experience (current and previous)

  • "I'm working as a DevOps Engineer with an experience of N years at XYZ Company. Before that I was working as ABC Engineer at ABC Company"

• Explain about your roles and responsibilities

  • "I take care of automation, I ensure that I setup Continuous Monitoring, etc"

• Tell about the tools used, if asked