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Allow selectively exporting all Go runtime metrics (#7990)

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Signed-off-by: Ryan Brewster <rpb@anthropic.com>
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rpb-ant
2026-04-08 14:38:19 -04:00
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parent a33c8058be
commit 010dc1e2b7
3 changed files with 37 additions and 2 deletions
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10
plugin/metrics/README.md
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@@ -55,7 +55,9 @@ This plugin can only be used once per Server Block.
## Syntax
~~~
prometheus [ADDRESS]
prometheus [ADDRESS] {
runtime_metrics
}
~~~
For each zone that you want to see metrics for.
@@ -63,6 +65,12 @@ For each zone that you want to see metrics for.
It optionally takes a bind address to which the metrics are exported; the default
listens on `localhost:9153`. The metrics path is fixed to `/metrics`.
* `runtime_metrics` exports the full Go [runtime/metrics](https://pkg.go.dev/runtime/metrics)
set — notably `go_cpu_classes_*` for CPU attribution (GC mark/assist/pause vs user code)
and `go_sched_latencies_seconds` for goroutine scheduling delay. Adds roughly 100 scalars
and 8 histograms. This is a process-wide latch: enabling it in any server block enables it
for all, and it stays enabled across reloads until restart.
## Examples
Use an alternative listening address: