As we start to go toward cloud-native infrastructure and build our applications out of microservices, we must fully face the drawbacks and challenges to doing so. Some of these challenges include how to consistently monitor and collect statistics, tracing, and another telemetry, how to add resiliency in the face of unexpected failure, how to do powerful feature routing (ie feature graduation, tap compare ) and much more like securing your services correctly. Service mesh, in general, helps developers solve this in a non-invasive way. In this session, we'll show how you can take advantage of these capabilities and show you some patterns that you can implement easily with a service mesh to make your delivery to production smoothly and without surprises. We expect most developers haven't adequately solved for these issues, so we'll take it step by step and build up a strong understanding of Istio and its patterns, harness its power in your production services architecture.

1. @alexsotob
SERVICE MESH PATTERNS
Alex Soto
@alexsotob
http://www.lordofthejars.com

2. @alexsotob2
Alex Soto
Red Hat Engineer
www.lordofthejars.com
@alexsotob
Who Am I?

3. @alexsotob
Raffle Rules (applicable in the real)
3
1. Follow: @alexsotob
2. With picture of the session
3. Mention @alexsotob
4. With hashtag #DevoxxUK
40% discount: ctwdevoxxuk19

4. @alexsotob4
Questions

5. @alexsotob5

6. @alexsotob6
MyApp
Monolith

7. @alexsotob7
Modules

8. @alexsotob8
Components

9. @alexsotob9
Microservices

10. @alexsotob10
Microservices

11. @alexsotob11
Microservices

12. @alexsotob12
Network of Services

13. @alexsotob13
Microservices Own Their Data

14. @alexsotob14
Multiple Points of Entry

15. @alexsotob15
Microservices == Distributed Computing
OS
JVM
Service A
OS
JVM
Service B
OS
JVM
Service C

16. @alexsotob16
It means no worries
(…)
It's our problem-free
philosophy
Hakuna Matata.
— Simba
“

17. @alexsotob17
▪ The network is reliable
▪ Latency is zero
▪ Bandwidth is infinite
▪ The network is secure
https://en.wikipedia.org/wiki/Fallacies_of_distributed_computing
▪ Topology does not change
▪ There is one administrator
▪ Transport cost is zero
▪ The network is homogeneous
Fallacies of Distributed Computing

18. @alexsotob18
Failure of a Service

19. @alexsotob19
Cascading Failure

20. @alexsotob20
Done properly
(Networking)
is a heroic art.
Done properly !
— Edna
“

21. @alexsotob21
Microservices’ilities
MyService
Monitoring
Tracing
API
Discovery
Invocation
Resilience
Pipeline
Authentication
Logging Elasticity

22. @alexsotob22
Hmmm. Really?
I’d say (water)
is half full.
— Dory
“

23. @alexsotob23

24. @alexsotob24
Microservices’ilities + OpenShift
MyService
Monitoring
Tracing
API
Discovery
Invocation
Resilience
Pipeline
Authentication
Logging Elasticity

25. @alexsotob25
Istio — ‘Sail’
(Kubernetes — the ‘Helmsman’)

26. @alexsotob26
But wow!
Am I so ready
for this change.
— Anna
“

27. @alexsotob27
Microservices’ilities + OpenShift + Istio
MyService
Monitoring
Tracing
API
Discovery
Invocation
Resilience
Pipeline
Authentication
Logging Elasticity

28. @alexsotob28
Container
JVM
Service B
Discovery
Load-balancer
Resiliency
Metrics
Tracing
Container
JVM
Service A
Discovery
Load-balancer
Resiliency
Metrics
Tracing
Container
JVM
Service C
Discovery
Load-balancer
Resiliency
Metrics
Tracing
Before Istio
Microservices Embedding Capabilities

29. @alexsotob29
Fairy tales can come true.
You gotta make them happen,
it all depends on you
— Tiana
“

30. @alexsotob30
Pod
Container
JVM
Service A
Sidecar Container
Pod
Container
JVM
Service C
Sidecar Container
After Istio
Pod
Container
JVM
Service B
Sidecar Container
Microservices Externalizing Capabilities
The sidecar intercepts all network traffic

31. @alexsotob31

32. @alexsotob32

33. @alexsotob33

34. @alexsotob34

35. @alexsotob35
This is the circle of sadness.
Your job is to make sure
that all sadness stays
inside of it.
— Joy
“

36. @alexsotob36

37. @alexsotob37

38. @alexsotob38

39. @alexsotob39
If I go there is just no telling
how far I’ll go.
— Moana
“

40. @alexsotob40
It's time to see
what I can do
To test the limits
and break through.
— Elsa
“

41. @alexsotob41
Put on your Sunday clothes
there's lots of world
out there.
— Wall-E
“
[http://bit.ly/istio-tutorial]
[http://bit.ly/istio-cheat-sheet]
[https://developers.redhat.com]

42. @alexsotob42
To infinity
and beyond!
— Buzz
“

43. @alexsotob43
Feature Graduation

44. @alexsotob44

45. @alexsotob45
Service A
Feature Graduation
Service B v1
Service B v2
user-preference:”123*”
Service B v3
user-preference:”12*”
experimental
beta
production

46. @alexsotob46
Service A
Feature Graduation
Service B v2
Service B v3
user-preference:”12*”
beta
production
Both experimental and beta levels

47. @alexsotob47
Secure Your Steps

48. @alexsotob48
Virtualizing test-cluster’s database in mirroring
Service A
Service B v1
Service B v2
Host:”serviceb-shadow”
Prod DB
Virtual DB
read
Throwaway
write

49. @alexsotob49
Regression-free versions (tap compare)

50. @alexsotob50
Diferencia

51. @alexsotob51
Simple Comparison

52. @alexsotob52

53. @alexsotob53

54. @alexsotob54
Kiali.io
New
Service
Graph

55. @alexsotob55
If you focus on
what you left behind
you will never be
able to see what lies ahead.
— Chef Auguste Gusteau
“

56. @alexsotob56
To live will be
an awfully
big adventure.
— Peter Pan
“

57. @alexsotob57
until serverless

58. @alexsotob58
Hay un amigo en mí,
cuando salgan a volar,
hay un amigo en mí
— Toy Story
“
@alexsotob
asotobue@redhat.com
http://www.lordofthejars.com/
lordofthejars

59. @alexsotob59
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