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Diffstat (limited to 'modules/caddyhttp/metrics.go')
-rw-r--r--modules/caddyhttp/metrics.go5
1 files changed, 3 insertions, 2 deletions
diff --git a/modules/caddyhttp/metrics.go b/modules/caddyhttp/metrics.go
index 947721429..9bb97e0b4 100644
--- a/modules/caddyhttp/metrics.go
+++ b/modules/caddyhttp/metrics.go
@@ -4,6 +4,7 @@ import (
"context"
"errors"
"net/http"
+ "strings"
"sync"
"time"
@@ -133,8 +134,8 @@ func (h *metricsInstrumentedHandler) ServeHTTP(w http.ResponseWriter, r *http.Re
statusLabels := prometheus.Labels{"server": server, "handler": h.handler, "method": method, "code": ""}
if h.metrics.PerHost {
- labels["host"] = r.Host
- statusLabels["host"] = r.Host
+ labels["host"] = strings.ToLower(r.Host)
+ statusLabels["host"] = strings.ToLower(r.Host)
}
inFlight := h.metrics.httpMetrics.requestInFlight.With(labels)