13198: Document metrics endpoints.

Arvados-DCO-1.1-Signed-off-by: Tom Clegg <tclegg@veritasgenetics.com>

diff --git a/services/keep-web/doc.go b/services/keep-web/doc.go
index 89cd26ac49a8b76fcf0053633ca26917477c9478..d65156f98781f99cd3fbc4a20b2f0ba144ea8f97 100644 (file)
--- a/services/keep-web/doc.go
+++ b/services/keep-web/doc.go
@@ -273,4 +273,10 @@
 // avoids redirecting requests to keep-web if they depend on
 // TrustAllContent being enabled.
 //
+// Metrics
+//
+// Keep-web exposes request metrics in Prometheus text-based format at
+// /metrics. The same information is also available as JSON at
+// /metrics.json.
+//
 package main