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Intro to Devops
- 2. Why am I up here? I’ve built… Clouds, self healing systems, data centers, … I have an opinion
- 3. Goals Simplicity > Completeness No Code No Minimal Jargon
- 4. Questions Ask them! I will pause when I see an owl
- 5. What is Devops? Peter Klipfel
- 6. What is Dev? Writing Code Development
- 7. What is Ops? Managing Servers Operations
- 8. So devops is… Writing Code Managing Servers
- 9. … sort of
- 10. Devops is… the combination of cultural philosophies, practices, and tools that increases an organization’s ability to deliver applications and services at high velocity
- 12. A Simple Example The Journey of Code
- 13. Let’s assume… We’re building a todo list Our service is a web application
- 14. Too many todos • Let’s add search!
- 15. The code is done The coders rejoice!
- 16. Ship it Throw it over the wall to ops!
- 17. Ops Install new code Install new search dependencies Update database Restart application
- 19. Limitations what we could improve
- 20. Scale What if there are 1000 servers? Repeat those steps 1000 times a day!
- 21. Reliability What if a server crashes? Wake up the ops gal!
- 22. Speed What if we need to get this out right now? What if we have 2 releases today? Hire 1000 ops people!
- 23. Security What if the ops team forgets the firewall once? (they’re deploying 1000 times) You get hacked!
- 25. Devops to the rescue and the tools to go with it
- 26. Scale Write a script to do it for you! Run the script once to do 1000 deployments Ansible, Chef, Puppet, Juju, Capistrano, Salt
- 27. Reliability Use the cloud! Pay other people to make sure your servers stay up AWS, Azure, Rackspace, Digital Ocean, GCE
- 28. Reliability… Monitor your systems! Use monitoring tools Icinga, NewRelic, Rollbar, Datadog, ELK, Nagios
- 29. Speed Use Continuous Integration! Make your code automatically deploy itself Jenkins, TravisCI, CircleCI, TeamCity, Bamboo
- 30. Security Monitor your system! Use automated pen testing and intrusion detection Qualys, Tripwire, Nessus, Rapid7, Snort, Suricata
- 33. Lots of teams What if 5 teams are using 70 different codebases? Scale, Reliability, Speed, Security?
- 34. Dev vs. Prod Environments may be very different How do we make systems portable? Scale, Reliability, Speed, Security?
- 35. Legacy Systems What if there’s only 1 human who can operate it? How do we upgrade? Scale, Reliability, Speed, Security?
- 36. (Big) Data What if we have 3PB of Todos? What if our database server crashes? Scale, Reliability, Speed, Security?
- 38. Devops to the rescue Again!
- 39. Microservices Teams take responsibility for their own pieces Solves code complexity problems Creates integration complexity problems Lots of Teams
- 40. Configuration Management Automate configurations for environments Make them look as similar as possible Makes environments repeatable Dev vs. Prod
- 41. Containers …and virtualization Create golden images Bake in environment Legacy Systems
- 42. Redundancy Duplicate critical services (databases) Multiple paths to critical services (databases) Expect failure Big Data
- 43. Culture & Philosophy Automation Devops culture spans teams Don’t “throw it over the wall” Collaborate Shared Responsibility
- 47. Infrastructure as Code Pushes complexity to the system level On-demand resources Can save or cost you a lot of money
- 48. Chatops Control servers from chat programs Increases communication Hipchat, Slack, IRC, Campfire
- 49. Datacenter Schedulers Highly scalable Large management overhead Mesos, Kubernetes, Docker Datacenter, Magnum
- 50. Platform as a Service PaaS Provides automation for servers for you Google App Engine, Heroku, Stratos