From 8b8c79ea7262d25e669db926d25aefe6a6f4238b Mon Sep 17 00:00:00 2001
From: Jared Kirschner <jkirschner@hashicorp.com>
Date: Mon, 13 Dec 2021 08:29:54 -0800
Subject: [PATCH] http: improve UI not enabled response message

Response now clearly indicates:
- the UI is disabled
- how to enable the UI
---
 .changelog/11820.txt | 3 +++
 agent/http.go        | 2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)
 create mode 100644 .changelog/11820.txt

diff --git a/.changelog/11820.txt b/.changelog/11820.txt
new file mode 100644
index 000000000..3a19f0a40
--- /dev/null
+++ b/.changelog/11820.txt
@@ -0,0 +1,3 @@
+```release-note:improvement
+http: when a user attempts to access the UI but can't because it's disabled, explain this and how to fix it
+```
\ No newline at end of file
diff --git a/agent/http.go b/agent/http.go
index a1d8461d0..f1604a9cc 100644
--- a/agent/http.go
+++ b/agent/http.go
@@ -593,7 +593,7 @@ func (s *HTTPHandlers) Index(resp http.ResponseWriter, req *http.Request) {
 	// Give them something helpful if there's no UI so they at least know
 	// what this server is.
 	if !s.IsUIEnabled() {
-		fmt.Fprint(resp, "Consul Agent")
+		fmt.Fprint(resp, "Consul Agent: UI disabled. To enable, set ui_config.enabled=true in the agent configuration and restart.")
 		return
 	}