Microservices Docker @Bonn Agile

Transcript

1. Microservices with Docker Timo Derstappen @teemow
2. What are Microservices?
3. Example Application
4. • Small, focussed services • Independent Processes • Language agnostic APIs • Highly decoupled Definition!?
5. Right tool for the job • Not bound to a single Technology • No one-size-fits-all approach
6. Resilience • No monolith to fall over • Design to fail • Circuit Breakers to avoid cascading failures
7. • Failures are going to happen • Reduce Mean Time to Recover Distributed Systems
8. Scaling Only services that are constrained by performance need scaling. Elastic (on-demand) scaling of smaller services leads to better cost control
9. Ease of Deployment Services can be deployed independently and faster. Changing a monolith could have more impact and risk so deployments are slower.
10. “Organizations which design systems ... are constrained to produce designs which are copies of the communication structures of these organizations.” — Melvin Conway
11. Composability • Re-use • Re-compose
12. Optimising for Replaceability Small services are rewritten or removed without worrying too much
13. • Continuous delivery • Infrastructure Automation • Small autonomous teams • Systems at scale • 12 Factor Apps Enabler
14. Where does Docker fit in?
15. • Lightweight • Fast • One process per container • Composability Where does it match?
16. • Disposable components • Make your state explicit • Provision at build-time • Configure at run-time Immutable Infrastructure
17. • Development • Unit/Integration Tests • Continuous delivery • Production Docker Workflow
18. Development
19. • Vagrant • rbenv • nodeenv • virtualenv Your current setup?
20. • Contains Build Tools • Each for every stack Dev Container
21. # What about running oneshot containers with the build tool inside. $ alias npm='docker run --rm -ti -v $(pwd):$(pwd) -w $(pwd) teemow/npm' $ npm install Aliases
22. web: build: . ports: - 8080:8080 volumes: - .:/app links: - redis redis: image: dockerfile/redis Fig
23. Build Chain
24. Jenkins - Docker Hub Integration
25. Production
26. Install docker on a host and start your container. Use fig to link your containers. Simple Container Hosting
27. • Scheduler • Service Discovery • Monitoring • Logging Container Environment
28. but there are lots of options here. • Mesosphere • Kubernetes • Consul • Project Atomic We ♥ CoreOS
29. Docker Cologne - CoreOS Meetup 19:00, 14th October Startplatz Brandon Philips, CTO of CoreOS Luke Marsden, CTO of Flocker There is a Meetup in Cologne
30. Sign up for the Giant Swarm private Beta Request Invite http://giantswarm.io/
31. Thanks for listening! Reach out: Timo Derstappen @teemow @giantswarm