From 84b3234f3d85600bfe55c495ad68e7c5daad3e9e Mon Sep 17 00:00:00 2001
From: Aliaksandr Valialkin <valyala@victoriametrics.com>
Date: Mon, 21 Mar 2022 15:34:49 +0200
Subject: [PATCH] docs/CHANGELOG.md: document
 a1e17e91f867da133900859b14a924211d9dd223

---
 app/vmagent/main.go  | 1 +
 app/vmselect/main.go | 1 +
 docs/CHANGELOG.md    | 1 +
 3 files changed, 3 insertions(+)

diff --git a/app/vmagent/main.go b/app/vmagent/main.go
index 6190d9ed9b..384de4c116 100644
--- a/app/vmagent/main.go
+++ b/app/vmagent/main.go
@@ -154,6 +154,7 @@ func requestHandler(w http.ResponseWriter, r *http.Request) bool {
 		if r.Method != "GET" {
 			return false
 		}
+		w.Header().Add("Content-Type", "text/html; charset=utf-8")
 		fmt.Fprintf(w, "<h2>vmagent</h2>")
 		fmt.Fprintf(w, "See docs at <a href='https://docs.victoriametrics.com/vmagent.html'>https://docs.victoriametrics.com/vmagent.html</a></br>")
 		fmt.Fprintf(w, "Useful endpoints:</br>")
diff --git a/app/vmselect/main.go b/app/vmselect/main.go
index 79d86cc0b8..566fc9da41 100644
--- a/app/vmselect/main.go
+++ b/app/vmselect/main.go
@@ -243,6 +243,7 @@ func selectHandler(startTime time.Time, w http.ResponseWriter, r *http.Request,
 		if r.Method != "GET" {
 			return false
 		}
+		w.Header().Add("Content-Type", "text/html; charset=utf-8")
 		fmt.Fprintf(w, "<h2>VictoriaMetrics cluster - vmselect</h2></br>")
 		fmt.Fprintf(w, "See <a href='https://docs.victoriametrics.com/Cluster-VictoriaMetrics.html#url-format'>docs</a></br>")
 		fmt.Fprintf(w, "Useful endpoints:</br>")
diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 125c85613b..3499d2b3ec 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -14,6 +14,7 @@ The following tip changes can be tested by building VictoriaMetrics components f
 
 ## tip
 
+* BUGFIX: return `Content-Type: text/html` response header when requesting `/` HTTP path at VictoriaMetrics components. Previously `text/plain` response header was returned, which could lead to broken page formatting. See [this issue](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/2323).
 
 ## [v1.75.0](https://github.com/VictoriaMetrics/VictoriaMetrics/releases/tag/v1.75.0)