L17 - DevOps 1

Question 1

In traditional Software Development, define the individual roles of Operations and Development…

Answer 1

Operation: Responsibility is for running software with active users.

Development: Responsible for the development and shipping of software

Question 2

Traditionally, what type of relationship does Development and Operations teams have?

Answer 2

• Adverse relationship
• Operations what things done fast
• Development want quality

Question 3

What is the traditional way in which Development and Operations worked together?

Answer 3

• Waterfall style
• Development handing over to operations in a waterfall way

Question 4

Define DevOps

Answer 4

• DevOps is an abstract idea of the convergence of development and operations.
• ‘you build it, you run it’ ethos where development team is given operational responsibilities

Question 5

What are the 5 DevOps principles?

Answer 5

• Culture
• Automation
• Learn
• Measurement
• Sharing

Question 6

Define the DevOps Culture principle…

Answer 6

• A culture where development and operations have their goals aligned is what an organisation wants. This removes an adversarial culture.

Focussed on:
- Blameless culture with no finger pointing.
- Organisational learning: Knowledge sharing, tight communication, learn from mistakes

Question 7

Define the DevOps Automation principle…

Answer 7

• Everyone should try to automate as many tasks as possible
• Automation can provide a centralised service platform that enables development and operations team to use in a self-service way.

Question 8

Define automation…

Answer 8

A documented, repeatable process

Question 9

Define the DevOps Lean principle…

Answer 9

• Processes of eliminating waste
• Waste being processes, hardware of software that the client doesn’t need.

Question 10

What is waste? How can it be eliminated?

Answer 10

• Waste refers to processes, software and hardware that is not needed by end users.
• Limit the ‘work in progress’ backlog
• Limit hand offs, since work pick-up requires communication and contextual overhead

Question 11

Define the DevOps Measurement principle…

Answer 11

• There must be measurement and metrics for everything!
• Vital for rapid resolution upon encountering issues.

Question 12

How is the Measurement principle implemented?

Answer 12

• Constant logging of development.
• Log everything mindset

Question 13

What is a vital feature of a logging system to uphold the measurement principle? Why is this?

Answer 13

• Searching
• Huge number of logs will be generated.
• Must be easily searchable for issue identification and resolution

Question 14

Define the DevOps Sharing principle…

Answer 14

• Sharing knowledge is vital for effective collaboration.
• Use tight feedback loops between development and operations team