[receiver/k8sobjects] Allow regexp with excluding namespaces in watch

[mk-raven]

Component(s)

receiver/k8sobjects

Is your feature request related to a problem? Please describe.

In many cases we are not interested get events from some namespaces. Its could be great if we can use it and dont make overhead about amount of event data in our storage.

Describe the solution you'd like

For example allow namespaces = [opentelemetry*], excluded namespace = [*system]

Describe alternatives you've considered

No response

Additional context

No response

[github-actions]

Pinging code owners:

• receiver/k8sobjects: @dmitryax @hvaghani221 @TylerHelmuth

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[TylerHelmuth]

@mk-raven we have a namespaces configuration option that allows you to specify the namespaces from which to collect

[hvaghani221]

@mk-raven This should not be implemented at the receiver level since the kube-apiserver doesn't support the use of wildcards in the namespace.

I recommend getting events from all namespaces and using filterprocessor to include/exclude events from specified namespaces.

[TylerHelmuth]

Since we have existing solutions I am going to close this issue. @mk-raven please let me know if the proposed solutions dont work and I can reopen and we can keep discussing.