Problem running ApiServerSource

[matzew]

Describe the bug

Running the API Server Source gives me:

{"level":"error","ts":"2019-09-16T14:19:08.507Z","logger":"apiserversource","caller":"tracing/opencensus.go:146","msg":"error building zipkin endpoint","error":"lookup apiserversource on 10.96.0.10:53: no such host","stacktrace":"knative.dev/eventing/vendor/knative.dev/pkg/tracing.WithExporter.func1\n\t/home/prow/go/src/knative.dev/eventing/vendor/knative.dev/pkg/tracing/opencensus.go:146\nknative.dev/eventing/vendor/knative.dev/pkg/tracing.(*OpenCensusTracer).ApplyConfig\n\t/home/prow/go/src/knative.dev/eventing/vendor/knative.dev/pkg/tracing/opencensus.go:58\nknative.dev/eventing/pkg/tracing.SetupStaticPublishing\n\t/home/prow/go/src/knative.dev/eventing/pkg/tracing/setup.go:62\nmain.main\n\t/home/prow/go/src/knative.dev/eventing/cmd/apiserver_receive_adapter/main.go:135\nruntime.main\n\t/usr/local/go/src/runtime/proc.go:200"}
{"level":"error","ts":"2019-09-16T14:19:08.508Z","logger":"apiserversource","caller":"apiserver_receive_adapter/main.go:138","msg":"Error setting up trace publishing","error":"unable to set OpenCensusTracing config: lookup apiserversource on 10.96.0.10:53: no such host","stacktrace":"main.main\n\t/home/prow/go/src/knative.dev/eventing/cmd/apiserver_receive_adapter/main.go:138\nruntime.main\n\t/usr/local/go/src/runtime/proc.go:200"}

Expected behavior

messages are published to the (default) broker.

Knative release version

no release: I run with nightly build ...

[akashrv]

/assign @Harwayne

[chizhg]

There is an e2e test guarding ApiServerSource - https://github.com/knative/eventing/blob/master/test/e2e/source_api_server_test.go.
It seems your setup is different from the e2e setup?

[lionelvillard]

@matzew Could be an istio problem :-)

[matzew]

love it!!

On Wed 2. Oct 2019 at 15:14, Lionel Villard ***@***.***> wrote: @matzew <https://github.com/matzew> Could be an istio problem :-) — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1889?email_source=notifications&email_token=AABGPTXTVRH4F5FQ64MVF7DQMSMHPA5CNFSM4IXDABPKYY3PNVWWK3TUL52HS4DFVREXG43VMVBW63LNMVXHJKTDN5WW2ZLOORPWSZGOEAEVRYA#issuecomment-537483488>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AABGPTQDJNHH2UKSHJOUWKLQMSMHPANCNFSM4IXDABPA> .

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[Harwayne]

The log from the original is a problem, but it should be limited to only tracing, not actually problematic sending events.

eventing/cmd/apiserver_receive_adapter/main.go

Line 152 in 9638441

logger.Error("Error setting up trace publishing", zap.Error(err))

#1990 fixes the error message from the initial issue. I agree with @lionelvillard that the actual problem of not sending/receiving events is likely caused by Istio. As I tested both with and without #1990 and saw events sent correctly in both cases.

[matzew]

/close

[knative-prow-robot]

@matzew: Closing this issue.

Details

In response to this:

/close

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[Shashankft9]

I have been getting the same issue in the v0.19.0 APIServerSource, I changed my config-tracing cm to work with jaeger as:

  enable: "true"
  backend: "zipkin"
  sample-rate: "1"
  zipkin-endpoint: http://istio-jaeger-collector.istio-system.svc.cluster.local:9411/api/v2/spans

one ques: is enable key really required here? I saw that its mentioned in the docs but not really in the _example of the configmap itself?
the logs that I get:

{"level":"error","ts":"2021-01-04T13:48:45.638Z","caller":"tracing/opencensus.go:158","msg":"error building zipkin endpoint","commit":"0f9a8c5","error":"lookup apiserversource on 169.254.25.10:53: no such host","stacktrace":"knative.dev/pkg/tracing.WithExporterFull.func1\n\tknative.dev/pkg@v0.0.0-20201103163404-5514ab0c1fdf/tracing/opencensus.go:158\nknative.dev/pkg/tracing.(*OpenCensusTracer).ApplyConfig\n\tknative.dev/pkg@v0.0.0-20201103163404-5514ab0c1fdf/tracing/opencensus.go:58\nknative.dev/pkg/tracing.SetupStaticPublishing\n\tknative.dev/pkg@v0.0.0-20201103163404-5514ab0c1fdf/tracing/setup.go:34\nknative.dev/eventing/pkg/adapter/v2.(*EnvConfig).SetupTracing\n\tknative.dev/eventing/pkg/adapter/v2/config.go:187\nknative.dev/eventing/pkg/adapter/v2.MainWithInformers\n\tknative.dev/eventing/pkg/adapter/v2/main.go:156\nknative.dev/eventing/pkg/adapter/v2.MainWithEnv\n\tknative.dev/eventing/pkg/adapter/v2/main.go:105\nknative.dev/eventing/pkg/adapter/v2.MainWithContext\n\tknative.dev/eventing/pkg/adapter/v2/main.go:80\nmain.main\n\tknative.dev/eventing/cmd/apiserver_receive_adapter/main.go:33\nruntime.main\n\truntime/proc.go:203"}
{"level":"error","ts":"2021-01-04T13:48:45.638Z","caller":"v2/main.go:159","msg":"Error setting up trace publishing{error 26 0  unable to set OpenCensusTracing config: lookup apiserversource on 169.254.25.10:53: no such host}","commit":"0f9a8c5","stacktrace":"knative.dev/eventing/pkg/adapter/v2.MainWithInformers\n\tknative.dev/eventing/pkg/adapter/v2/main.go:159\nknative.dev/eventing/pkg/adapter/v2.MainWithEnv\n\tknative.dev/eventing/pkg/adapter/v2/main.go:105\nknative.dev/eventing/pkg/adapter/v2.MainWithContext\n\tknative.dev/eventing/pkg/adapter/v2/main.go:80\nmain.main\n\tknative.dev/eventing/cmd/apiserver_receive_adapter/main.go:33\nruntime.main\n\truntime/proc.go:203"}
{"level":"warn","ts":"2021-01-04T13:48:45.638Z","caller":"v2/config.go:178","msg":"Sink timeout configuration is invalid, default to -1 (no timeout)","commit":"0f9a8c5"}

additional ref: https://knative.slack.com/archives/C9JP909F0/p1609755646382100

[Shashankft9]

I tried solving the error same way @Harwayne did earlier, in here: https://github.com/knative/eventing/blob/master/pkg/adapter/v2/config.go#L187 I changed e.Component to "" and it started working.
I can create a PR for this if this is indeed the solution.

Further, why the old fix isnt working here is probably because earlier the configuration of tracing used to happen in cmd/apiserver_receiver_adapter/main.go (where the fix was done) but now that code resides in pkg/adapter/v2/config.go.