Disabling go metric collection

[martinvelez]

Is there a way to not collect certain metrics, like go metrics?

# HELP go_gc_duration_seconds A summary of the GC invocation durations.
# TYPE go_gc_duration_seconds summary
go_gc_duration_seconds{quantile="0"} 0
go_gc_duration_seconds{quantile="0.25"} 0
go_gc_duration_seconds{quantile="0.5"} 0
go_gc_duration_seconds{quantile="0.75"} 0
go_gc_duration_seconds{quantile="1"} 0
...

I think this is possible in Node Exporter (see prometheus/node_exporter#1148).

[pdf]

The Go metrics are included by default on all exporters by the upstream promhttp package, which is why you'll see these metrics on nearly all the third-party collectors. That node_exporter PR is a significant refactor, so I'll need to dig into promhttp to work out how to avoid exposing them.

This does not seem like a high priority change, so it may take me a little time before I can address it, happy to review a PR though.

[pdf]

I've reported this upstream, since it seems to me that incorporating this behaviour there would be a win for all exporters, we'll see what the concensus is:

prometheus/exporter-toolkit#119