You can use zipkin to gather traces from fn.
Running a zipkin node is easy to get started, they have a docker container:
With zipkin running you can point functions to it using an env var:
ZIPKIN_URL=http://zipkin:9411/api/v1/spans
Open your browser to observe:
http://localhost:9411
We have support for Jaeger traces, as well.
It is easy to get an all-in-one container of jaeger running to test:
And then point fn to jaeger with the environment variable:
JAEGER_URL=http://localhost:14268/api/traces?format=jaeger.thrift
Open browser to observe:
http://localhost:16686
Fn offers a prometheus metrics endpoint at /metrics