From c13f8086194f55b1204c3165836a809f2c9aaabe Mon Sep 17 00:00:00 2001
From: LamGC <lam827@lamgc.net>
Date: Thu, 9 Mar 2023 00:15:39 +0800
Subject: [PATCH] Allow root path as metrics path. (#2590)

Signed-off-by: LamGC <lam827@lamgc.net>
---
 node_exporter.go | 32 +++++++++++++++++---------------
 1 file changed, 17 insertions(+), 15 deletions(-)

diff --git a/node_exporter.go b/node_exporter.go
index a68af050..709810a4 100644
--- a/node_exporter.go
+++ b/node_exporter.go
@@ -186,23 +186,25 @@ func main() {
 	level.Debug(logger).Log("msg", "Go MAXPROCS", "procs", runtime.GOMAXPROCS(0))
 
 	http.Handle(*metricsPath, newHandler(!*disableExporterMetrics, *maxRequests, logger))
-	landingConfig := web.LandingConfig{
-		Name:        "Node Exporter",
-		Description: "Prometheus Node Exporter",
-		Version:     version.Info(),
-		Links: []web.LandingLinks{
-			{
-				Address: *metricsPath,
-				Text:    "Metrics",
+	if *metricsPath != "/" {
+		landingConfig := web.LandingConfig{
+			Name:        "Node Exporter",
+			Description: "Prometheus Node Exporter",
+			Version:     version.Info(),
+			Links: []web.LandingLinks{
+				{
+					Address: *metricsPath,
+					Text:    "Metrics",
+				},
 			},
-		},
+		}
+		landingPage, err := web.NewLandingPage(landingConfig)
+		if err != nil {
+			level.Error(logger).Log("err", err)
+			os.Exit(1)
+		}
+		http.Handle("/", landingPage)
 	}
-	landingPage, err := web.NewLandingPage(landingConfig)
-	if err != nil {
-		level.Error(logger).Log("err", err)
-		os.Exit(1)
-	}
-	http.Handle("/", landingPage)
 
 	server := &http.Server{}
 	if err := web.ListenAndServe(server, toolkitFlags, logger); err != nil {