Distributed Tracing with OpenCensus

Presentation on Distributed Tracing using OpenCensus. A brief overview of distributed tracing concepts followed by a demo of an application using OpenCensus. This talk was presented at the Golang Vancouver meetup.

Transcript

1. D I S T R I B U T E D T R A C I N G W I T H O P E N C E N S U S W H AT, H O W, W H Y Y Y Y Y Y Y Y Y Y A L E X B O T E N @ C O D E B O T E N
2. W H AT
3. D I S T R I B U T E D T R A C I N G set of tools and practices to monitor the health and reliability of distributed applications - trace context w3c working draft
4. Credit: Yuri Shkuro
5. C O N C E P T S • Trace • Spans
6. C O N C E P T S • Context • Propagation
7. C O N C E P T S • Context • Propagation
8. S O M E O F T H E T O O L S
9. O P E N C E N S U S
10. O P E N C E N S U S A N D O P E N T R A C I N G +
11. H O W
12. O P E N C E N S U S • Register an exporter • Start a trace • Add spans • Propagate
13. W E AT H E R - A P I : 8 0 8 2 H O T E L S - A P I : 8 0 8 1 R E S E R VAT I O N - A P I : 8 0 8 0 tracing:6831 tracing:16686
14. W E AT H E R - A P I L O C A L H O S T: 8 0 8 2 H O T E L S - A P I L O C A L H O S T: 8 0 8 1 T R A C E - D E M O L O C A L H O S T: 8 0 8 0 W E AT H E R - A P I : 8 0 8 2 H O T E L S - A P I : 8 0 8 1 R E S E R VAT I O N - A P I : 8 0 8 0 tracing:6831 tracing:16686 curl localhost:8080/v1/reservation?city=Paris X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1
15. W E AT H E R - A P I L O C A L H O S T: 8 0 8 2 H O T E L S - A P I L O C A L H O S T: 8 0 8 1 T R A C E - D E M O L O C A L H O S T: 8 0 8 0 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: hotels-api … W E AT H E R - A P I : 8 0 8 2 H O T E L S - A P I : 8 0 8 1 R E S E R VAT I O N - A P I : 8 0 8 0 tracing:6831 tracing:16686 curl localhost:8080/v1/reservation?city=Paris X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1
16. W E AT H E R - A P I L O C A L H O S T: 8 0 8 2 H O T E L S - A P I L O C A L H O S T: 8 0 8 1 T R A C E - D E M O L O C A L H O S T: 8 0 8 0 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: hotels-api … X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: weather-api … W E AT H E R - A P I : 8 0 8 2 H O T E L S - A P I : 8 0 8 1 R E S E R VAT I O N - A P I : 8 0 8 0 tracing:6831 tracing:16686 curl localhost:8080/v1/reservation?city=Paris X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1
17. W E AT H E R - A P I L O C A L H O S T: 8 0 8 2 H O T E L S - A P I L O C A L H O S T: 8 0 8 1 T R A C E - D E M O L O C A L H O S T: 8 0 8 0 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: hotels-api … X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: weather-api … X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: reservation-api … W E AT H E R - A P I : 8 0 8 2 H O T E L S - A P I : 8 0 8 1 R E S E R VAT I O N - A P I : 8 0 8 0 tracing:6831 tracing:16686 curl localhost:8080/v1/reservation?city=Paris X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1
18. W E AT H E R - A P I L O C A L H O S T: 8 0 8 2 H O T E L S - A P I L O C A L H O S T: 8 0 8 1 T R A C E - D E M O L O C A L H O S T: 8 0 8 0 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: hotels-api … X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: weather-api … X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1 Service: reservation-api … W E AT H E R - A P I : 8 0 8 2 H O T E L S - A P I : 8 0 8 1 R E S E R VAT I O N - A P I : 8 0 8 0 tracing:6831 tracing:16686 curl localhost:8080/v1/reservation?city=Paris X-B3-TraceId: 1234… X-B3-ParentSpanId: 1234… X-B3-SpanId: 1234… X-B3-Sampled: 1
19. D E M O
20. W H Y Y Y Y Y Y Y Y Y Y Y Y
21. T E S T I N G
22. D E P L O Y I N G
23. T E S T I N P R O D U C T I O N ! ? • metrics • dashboards • event logging
24. D I S T R I B U T E D T R A C I N G • event correlation • see how the code behaves IRL
25. A S K Q U E S T I O N S • why is this function slower today than a week ago? • why do some of these request stand out from the others?
26. W H Y O P E N C E N S U S • great community • easy to get started • vendor agnostic
27. D E M O # 2
28. D E M O # 2
29. M O R E O N T H E W H AT • Dapper, a large scale distributed systems tracing infrastructure: https:// static.googleusercontent.com/media/research.google.com/en//archive/ papers/dapper-2010-1.pdf • https://opencensus.io & https://opentracing.io • Trace context - W3C working draft: https://www.w3.org/TR/trace-context/
30. Q U E S T I O N S ? A L E X B O T E N @ C O D E B O T E N G I T H U B . C O M / C O D E B O T E N