Where's the value in Cloud Native

Whether you're a developer or a manager we will give you a framework to decide which cloud native practices you should adopt today. We explain the practicalities of implementing three high value cloud native practices, both from an implementation perspective, and the perspective of someone having to sell them to the wider organisation.

Transcript

1. Where's the value in Cloud Native High value cloud native practices, and how to sell them to your boss
2. Who are we Billie Thompson Cloud Native Consultant at Armakuni @PurpleBooth Zenon Hannick COO at Armakuni @ZenonHannick
3. Contents • Value Stream Mapping • Deployment Pipeline • PaaS • OpenTracing • Conclusion
4. Value Stream Maps
5. Value Stream Maps Visualising the flow of value
6. Value Stream Maps Creating desire for change
7. Run your own How to run your own VSM session
12. Key Values: Raw • Lead Time • Process Time • Complete & Accurate • Number of Dependant Systems
13. Key Values: Calculated • Activity Ratio • Totals
14. Key Values: Observed • Work that falls outside VSM (Unplanned Work) • Variance in PT • Variance in LT • Common adjectives ◦ “Confusing” ◦ “Fast” ◦ “Boring”
15. Take it further You can make future streams too!
16. Where’s the value?
17. Practitioner • Numbers don’t lie • Only work on problems • Focus on value to customer
18. Manager • The (difficult) conversation • Shared understanding & agreement • Identifies best areas to focus effort • Shows flow of value! • Numbers & Data • Allows you to track progress • Can set future desired state
19. Objection! • I can’t get everyone together ◦ Gather the statistics one to one • I don’t know all the times ◦ Find someone who does ◦ Educated guess ◦ Dig it out of a tool ▪ VCS ▪ Deployment Tool ▪ Ticketing System
20. Apply your discoveries Evidence first!
21. Deployment Pipeline All the way to production
22. The Symptoms • Merging processes • Test Deployment processes ◦ High PT • Deployment processes ◦ High LT ◦ High PT ◦ Low C&A ◦ High Variance of LT
25. Where’s the value?
26. Practitioner • Building software vs Building a system • We share the codebase • My laptop won’t fit in a server rack • Oops I forgot to… ◦ Run the tests ◦ Check the migrations ◦ Run the security tests ◦ etc
27. Manager • Visualises flow of code (value) • Encourages constant flow • Speed • Smaller batch sizes • Reduces risk • Fully auditable trail
28. Objection! • I need to press a button ◦ Illusion of confidence in manual step ◦ Lack of trust in automated testing • I need to review changes • Governance ◦ Pipeline automatically provides audit trail ◦ Can automate governance checks as part of the pipeline • Security ◦ Add to pipeline
29. PaaS That developers can personally push to
30. The Symptoms • Deployment Process ◦ High LT ◦ High PT ◦ Poor C&A • Unplanned Work ◦ That happens at 3am ◦ Easily recoverable errors ◦ Scaling • Large % of time & effort operating platform/infrastructure, (i.e. non-value adding work)
33. Don’t forget! Use a pipeline to deliver this
34. Where’s the value?
35. Practitioner • No need to learn about servers • My code, my responsibility • Prototyping is easy • I no longer need to think about: ◦ Reliability ◦ Scaling ◦ Monitoring
36. Manager • Focus on business value delivery • Abstracts complexity • Standardise across organisation • Software delivery practices for platforms • Turns platform team into a product team • Speed • Less things for people to worry about
37. Objection! • I need to know everything that is going on! • I need to control the whole stack • We are very special unique snowflake
38. Request Tracing OpenTracing (Jaeger)
39. The Symptoms • Development processes ◦ High variance ◦ Poor C&A • Common Adjectives ◦ “Confusing” ◦ “Complicated” • Unplanned work ◦ Misunderstanding system ◦ Wrong prioritization
43. The nitty gritty Set some additional headers, with HTTP: • X-B3-TraceId • X-B3-ParentSpanId • X-B3-SpanId • X-B3-Sampled or X-B3-Flags (Or a bunch of other alternatives) Optionally an API call to the OpenTracing service.
44. Where’s the value?
45. Practitioner • What calls what is no longer a mystery • Makes me think about users • O(n) calls become really obvious • I can prove it!
46. Manager • Observability • Evidence of areas needing improvement • Enables association of user activity to system activity
47. Objection! • Not heard any arguments against this
48. Conclusion
49. Conclusion You can do it
50. Conclusion Evidence can drive change
51. Links • https://cloudnative.ly/running-a-value-st ream-mapping-session-5e1d43fba0 • https://www.lucidchart.com/pages/valu e-stream-mapping • https://concourse-ci.org/ • https://www.cloudfoundry.org/ • https://www.jaegertracing.io/docs/gettin g-started/
52. Any Questions? Billie Thompson @PurpleBooth Zenon Hannick @ZenonHannick