about me

• I did a CS Masters here
• I was a member of HackSoc
• Now a .NET software engineer
• Work at Imosphere /i-mo-sphere/
• Interests include Linux, open source, devOps, automaton and getting involved in the tech community

about this talk

• Where did it come from
• What is DevOps??
• Continuous stuff
• Examples of different tools
• How to DevOps in your own time

Where did DevOps come from?

Let’s go back in time

🦕

Waterfall

• Long development cycle
• Tightly controlled change management
• Slow to release new features to customers
• Long feedback loop

Agile

• Short development iterations
• Quicker to develop new features
• Shorter feedback loop

Ok, so DevOps is just Devs doing their own Ops?

This is Dev

👩‍💻

This is Ops

👩‍💻

It’s all in the culture

Dev, meet Ops. Ops, meet Dev

🙋‍♀️ 🙋‍♀️

Service Level Agreement

• Services don’t need 100% uptime
• Realistic uptime goals
• New features vs stability
• Cost of resources

Error Budget

📈

Monitor all the things

🎛️

Spend it!

💸

Bringing the Dev into Ops

Shell scripts

🐚

$ ssh production@critical-server
$ ./deploy-billion-servers.sh

Engineering solutions

Let’s get continuous

Continuous Integration

• Small bite size chunks that work well together
• Merging work into the main branch often, multiple times a day
• Hour long branches

Continuous Delivery

• Always have something to release:
• It’s tested
• Automated build

Continuous Deployment

• Deploying the code to customers:
  • Easily
  • Often
  • Automated
• Aim is no downtime or affect to users

How To DevOps

Spin it Up!

(And back it up)

Provisioning

Multiple servers and data centres

clusters

So you wanna devOps??