1. de:code 2019 DT81
Distributed Tracing in a Cloud Native Age
Yoichi Kawasaki @yokawasa
Azure TSP, GBB, Microsoft

2. @yokawasa
https://github.com/yokawasa
Azure Technology Solution Professional
J J s K B G
At 2 2 1 027C N e D A K k B o
n l b Ja G A K n pD
, Obc
About Speaker

3. CNCF - Cloud Native Definition v1.0
https://github.com/cncf/toc/blob/master/DEFINITION.md

6. “observability is a measure of how well internal states of
a system can be inferred from knowledge of its external outputs”
Wikipedia: https://en.wikipedia.org/wiki/Observability

7. https://docs.microsoft.com/en-us/azure/azure-monitor/app/distributed-tracing

8. – Span & Trace
Span:
Trace:
xxx1
bbb
aaa
xxx1
ccc
bbb
https://opentracing.io/specification/
Google Dapper

9. - Visualization

10. - Propagation
xxx1
bbb
aaa
xxx1
ccc
bbb
•x-request-id
•x-b3-traceid
•x-b3-spanid
•x-b3-parentspanid
•x-b3-sampled
•x-b3-flags
•x-ot-span-context
https://github.com/openzipkin/b3-propagation
extract Inject

11. - Backend
Trace data
Backend

12. Jaeger Agent & Backend in OpenTracing
https://www.jaegertracing.io/docs/1.8/architecture/

13. OpenTracing OpenCensus
• OpeTracing =
API , Framework/
• CNCF
• : Jaeger, Zipkin,
Elastic APM, Datadog, Apache
SkyWalking
https://opentracing.io https://opencensus.io/
• OpenCensus =
( )
• Google OSS
• (Exporter): Jaeger,
Zipkin, AWS X-Ray, Stackdriver Tracing,
Azure Monitor
OpenTracing OpenCensus
backend Import
Tracer Exporter
Metrics Stats

14. https://cloudblogs.microsoft.com/opensource/2018/06/13/microsoft-joins-the-opencensus-project/

15. OpenCensus OpenTracing
OpenTelemetry
https://twitter.com/dankohn1/status/1125422653060333568
OpenTeremetry Specification
https://github.com/open-telemetry/opentelemetry-specification

16. OpenTracing and Jaeger

17. Front-envoy
process
Front-envoy container
service_red
envoy process
Service Red Container
service_red
app process
service_blue
envoy process
Service Blue Container
service_blue
app process
service_green
envoy process
Service Green Container
service_green
app process
8080
8080
8080
Jaeger
process
Port9411
Port 9411
Port 9411
Trace Data
Port 8000
Port 80
Port 16686
Port
16686
Access to Jaeger UI
Port 80
Port 9000
Trace Data
TraceData
Port 80
Port 80
Port 9000
TraceDataPort9411
Demo1 Architecture
https://github.com/yokawasa/envoy-proxy-demos/tree/master/jaeger-tracing

18. OpenCensus and
Azure Monitor

19. Golang app
Port 8001
Port
50030
Trace Data
Trace Data
Demo2 Architecture
Python app
Port 8002
Port
8000
Local forwarder
Node app
Port 8003
Port
8008
Azure Monitor
Local Forward – Application Insights Local forwarder
https://github.com/microsoft/ApplicationInsights-LocalForwarder
Trace Data

21. A service mesh is a dedicated
infrastructure layer for handling service-to-
service communication. It’s responsible for
the reliable delivery of requests through the
complex topology of services that comprise a
modern, cloud native application. In practice,
the service mesh is typically implemented as
an array of lightweight network proxies that
are deployed alongside application code,
without the application needing to be aware.
Buoyant’s CEO William Morgan https://blog.buoyant.io/2017/04/25/whats-a-service-
mesh-and-why-do-i-need-one/

22. 30

23. PodPodPod
https://docs.microsoft.com/ja-jp/dotnet/standard/microservices-
architecture/implement-resilient-applications/implement-circuit-breaker-pattern
PodPodPod
PodPodPod

24. PodPodPod
PodPodPod
PodPodPod
Service Breaker Destination Rule (Istio)
https://istio.io/docs/tasks/traffic-management/circuit-breaking/

25. Discovery & Load Balancing
round robin, random, weighted least request
Traffic Splitting
A/B testing, canary rollouts, staged rollouts
Traffic Control
Handling Failures
circuit breakers, timeouts, and retries
Fault Injections
delays or abort
Rate Limiting
Distributed Tracing
Collecting Logs & Metrics
Service Graph
Authentication Policy
Mutual TLS Authentication
Istio RBAC
https://istio.io/docs/concepts/what-is-istio/

26. •
•
•
https://istio.io/docs/concepts/what-is-istio/

27. Service Mesh
Control Plane
Service B
Pod
Trace Data
Storage & UI
Trace
data
Trace
data
Trace
data
Service A
Pod
Service A
Pod

28. Distributed Tracing on Istio
using Jaeger

30. © 2018 Microsoft Corporation. All rights reserved.
© 2019 Microsoft Corporation. All rights reserved.
( ) de:code 2019 (2019 5 29~30 )