How Microservices and Containers Drive Agility

Presented at Agile Manchester 2016

Transcript

1. sendachi.com How Microservices & Containers Drive Agility Matt Saunders Principal Consultant Sendachi
2. sendachi.com Sendachi • Formed in 2016 • Merging Clutch (US) and Contino (UK) • VC Funded Services Company • Docker Premier Partner
3. sendachi.com Sendachi • Enterprise Focus • DevOps & Continuous Delivery • Containerisation & Virtualisation • Microservices • Security, Reliability & Resilience • Cloud Architecture
4. sendachi.com Matt Saunders Principal Consultant @cm6051 matt.saunders@sendachi.com Sendachi • Old-school Sysadmin • Principal Consultant • Training and Learning • DevOps before it was cool • DevOps now it wasn’t cool any more
5. sendachi.com London DevOps
6. sendachi.com Microservices
7. sendachi.com Microservices “While there is no precise definition of this architectural style, there are certain common characteristics around organization around business capability, automated deployment, intelligence in the endpoints, and decentralized control of languages and data.” - Martin Fowler, James Lewis - ThoughtWorks
8. sendachi.com Microservices • Small replaceable services • Loosely coupled together • Deploy seperately • REST APIs • Independent backends
9. sendachi.com Microservices • Release at independent speed • Continuous Integration • Continuous Delivery • Social Contracts
10. sendachi.com Microservices
11. sendachi.com Microservices
12. sendachi.com Microservices
13. sendachi.com Microservices
14. sendachi.com Containers
15. sendachi.com Containerisation Benefits (1/2) • Container abstraction layer • Platform Portability • Resilience with Clustering • Provenance and Traceability
16. sendachi.com Containerisation Benefits (2/2) • Environment Consistency • Improved Compute Density • Multi-Tenancy • Remove the Virtualisation Tax
17. sendachi.com Container Abstraction Layer • Common point of entry for containers • Run diverse technology stacks • HTTP with RESTful Interfaces work well • Microservices • 12 Factor Applications
18. sendachi.com Platform Portability • Move applications easily between servers • Private and public cloud • Everything is contained
19. sendachi.com Resilience with Clustering • Higher-order clustering options • Built specifically for Docker • Docker Swarm itself is a containerised application
20. sendachi.com Provenance and Traceability • Container builds can be automated • Cryptographic signing available • Docker registry comms are encrypted • Proof that the image is as-built
21. sendachi.com Environment Consistency • Applications run purely inside containers • Environment information stored outside containers • The same unaltered container runs in all environments • Environmental drift is minimised
22. sendachi.com Improved Compute Density • Applications can be limited by memory and CPU • Pre-allocation of resources isn’t necessary • Intelligent scheduling of workloads with Swarm • Run larger Docker host servers without virtualisation
23. sendachi.com Multi-Tenancy • Docker containers are insulated from each other • Containers can’t interfere or interact with each other • Enables greater density
24. sendachi.com Remove the Virtualisation Tax • Docker machine can run on bare metal • Swarm orchestration optimally places containers • Swarm will replace containers on failed nodes • Any need for virtualisation?
25. sendachi.com The Case for Docker
26. sendachi.com Docker Adoption 5.6 million pulls/day $1 billion valuation 2 billion + pulls to date
27. sendachi.com Docker Adoption
28. sendachi.com Docker Adoption
29. sendachi.com Docker in the Enterprise
30. sendachi.com Docker in the Enterprise • Goldman Sachs • Swisscom • New York Times • ING • BBC
31. sendachi.com Docker Datacenter • Integrated Pipeline of Tools • Build • Ship • Run
32. sendachi.com Docker Datacenter
33. sendachi.com Docker Datacenter • Docker Toolbox • Run a Docker environment locally • Build containers • Cryptographic signing
34. sendachi.com Docker Datacenter • Docker Open Source Registry • Docker Trusted Registry
35. sendachi.com Docker Datacenter • Docker Swarm • Orchestration • Scaling • Powerful Clustering Tool
36. sendachi.com Docker Datacenter • Docker Content Trust • Cryptographic Guarantees • Signed with keys • Establishes trust • Valid Signatures required
37. sendachi.com Docker Datacenter • Docker Universal Control Plane • Versioning • Management • RBAC
38. sendachi.com Container Lunchbox
39. sendachi.com Not a Free Lunch
40. sendachi.com Not a Free Lunch • Significant Operations Overhead • Substantial DevOps Skills Needed • Implicit Interfaces • Distributed System Complexity • Testability Challenges
41. sendachi.com Container Lunchbox
42. sendachi.com Container Lunchbox • Reduce Operations Overhead • Bundle Applications into a Container • Manage them at scale in a Cluster • Scale your service horizontally
43. sendachi.com Container Lunchbox • Invest in DevOps • DevOps and Release Skills in Dev Teams • Build Containers in Dev World • Build Images only once
44. sendachi.com Container Lunchbox • Make Interfaces Explicit • Written Contracts between Microservices • Use RESTful APIs over HTTPS • Docker doesn’t really help here :) •
45. sendachi.com Container Lunchbox • Embrace Distributed Systems • Failover • Horizontal Scaling • Resilience • Easier with Docker
46. sendachi.com Container Lunchbox • Test Containers • Build a CI Pipeline • Repeatable Infrastructure • Run tests
47. sendachi.com Container Lunchbox • Test Containers • Build a CI Pipeline • Repeatable Infrastructure • Run tests
48. sendachi.com Container Lunchbox • Test Containers • Build a CI Pipeline • Repeatable Infrastructure • Run tests
49. sendachi.com Containers & Microservices
50. sendachi.com Containers & Microservices • Run a staged move to Docker • Run your monolith in a container
51. sendachi.com Containers & Microservices • Run a staged move to Docker • Run your monolith in a container
52. sendachi.com Containers & Microservices • Get some benefits • Faster startup times • Move app between environments
53. sendachi.com Containers & Microservices • Start breaking up the monolith • Slice bits off the edges of the ball of mud • Make microservices
54. sendachi.com Driving Agility
55. sendachi.com Driving Agility • Simplified environment provisioning • Use the same container everywhere • Abstract per-environment config away
56. sendachi.com Driving Agility • Build images with all dependencies • No more version mismatches • Build it once
57. sendachi.com Driving Agility • Deploy new technologies • Experiment! • Bundle • Deploy • Learn
58. sendachi.com Containers!
59. sendachi.com Containers!
60. sendachi.com Containers!
61. sendachi.com Containers!
62. sendachi.com Containers!
63. sendachi.com Containers!
64. sendachi.com Thanks! Matt Saunders Principal Consultant @cm6051 matt.saunders@sendachi.com Sendachi @dangerousisgood sendachi.com