--- postfix_exporter.go.orig 2019-02-15 11:41:28 UTC +++ postfix_exporter.go @@ -31,6 +31,7 @@ import ( "github.com/hpcloud/tail" "github.com/prometheus/client_golang/prometheus" + "github.com/prometheus/client_golang/prometheus/promhttp" ) var ( @@ -691,7 +692,7 @@ func main() { } prometheus.MustRegister(exporter) - http.Handle(*metricsPath, prometheus.Handler()) + http.Handle(*metricsPath, promhttp.Handler()) http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) { _, err = w.Write([]byte(`