Remove eventrouter special treatment

[james-callahan]

eventrouter (https://github.com/heptiolabs/eventrouter) currently has special treatment in the promtail config (

kustomize-loki/promtail/files/promtail.yaml

Lines 73 to 84 in 1509183

	- match:
	selector: '{app="eventrouter",stream="stdout"}'
	stages:
	- json:
	expressions:
	namespace: event.metadata.namespace
	ts: event.lastTimestamp
	- labels:
	namespace: ""
	- timestamp:
	format: RFC3339
	source: ts

)

Is there a way we can remove that?

e.g. have eventrouter (or something similar) log directly to promtail itself.

[james-callahan]

The new grafana-agent release might be suitable: https://github.com/grafana/agent/releases/tag/v0.23.0

The new eventhandler integration allows users to watch for changes to Event objects in a Kubernetes cluster and ship them as log entries.

docs: https://grafana.com/docs/agent/latest/configuration/integrations/integrations-next/eventhandler-config/

However note for now:

Pipelines and relabel configuration are not yet supported, but these features will be added soon. You should use the job=eventhandler cluster=... labels to query your events (you can then use LogQL on top of the result set).