From 78e553e72643b358b33cd94fd42837ff64241b78 Mon Sep 17 00:00:00 2001
From: lance6716 <lance6716@gmail.com>
Date: Tue, 1 Sep 2020 11:20:34 +0800
Subject: [PATCH] master: fix panic when etcd member not started

---
 dm/master/server.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/dm/master/server.go b/dm/master/server.go
index 99ef3b1ad5..6a6cf8b7c7 100644
--- a/dm/master/server.go
+++ b/dm/master/server.go
@@ -1867,9 +1867,13 @@ func (s *Server) listMemberMaster(ctx context.Context, names []string) (*pb.Memb
 		}
 
 		alive := true
-		_, err := client.Get(etcdMember.ClientURLs[0] + "/health")
-		if err != nil {
+		if len(etcdMember.ClientURLs) == 0 {
 			alive = false
+		} else {
+			_, err := client.Get(etcdMember.ClientURLs[0] + "/health")
+			if err != nil {
+				alive = false
+			}
 		}
 
 		masters = append(masters, &pb.MasterInfo{