Tracing support

[vaikas]

We should have a How-To guide for how to debug events flowing through the system and understand where things went wrong and how. Istio gives good tracing capabilities, but they can be a bit tricky to understand what they actually mean, a simple Readme would go a long way to prevent the user having to go digging through the logs, or at least point them to the actual logs that are necessary to look at to figure out what went wrong and why.

@Harwayne assigning to you given that you spent a good chunk of time working through what tracing capabilities are available out of Istio and how to decode them.

[matzew]

/milestone v0.4.0

[knative-prow-robot]

@matzew: You must be a member of the knative/knative-milestone-maintainers github team to set the milestone.

In response to this:

/milestone v0.4.0

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[matzew]

a bit late for v0.3.0 😄

[vaikas]

@Harwayne think you might be able to update this for Broker/Trigger model for the Tuesday release?
https://www.knative.dev/docs/eventing/debugging/

[grantr]

/milestone v0.5.1

[grantr]

/milestone v0.6.0

[akashrv]

/milestone v0.7.0

[Harwayne]

The components that are involved:

• Broker Ingress Broker Ingress Tracing #1290
• Broker Filter Broker Filter tracing #1295
• ClusterChannelProvisioners
  • in-memory Add tracing support to in-memory dispatcher. #1199
  • gcp-pubsub Add tracing to GCP-PubSub Channels, by watching the config-tracing ConfigMap. #1231
  • natss Add tracing to NATSS Channels, by watching the config-tracing ConfigMap. #1204
  • kafka Add tracing to Kafka Channels, by watching the config-tracing ConfigMap. #1203
• Importers
  • ApiServerSource Add static, 1% tracing to ApiServerSource and CronJobSource. #1358
  • CronJobSource Add static, 1% tracing to ApiServerSource and CronJobSource. #1358
• Documentation

[grantr]

Documentation is now tracked in knative/docs#1515. Closing this one.