From 17dc6bc305ce658e634432c70b4932bbfef2f9e6 Mon Sep 17 00:00:00 2001
From: Polina Bungina <polina.bungina@zalando.de>
Date: Thu, 18 Sep 2025 16:05:48 +0200
Subject: [PATCH] Add selector to master service when switching to CM

---
 pkg/cluster/cluster.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/pkg/cluster/cluster.go b/pkg/cluster/cluster.go
index e9a691faa..f1d9ce164 100644
--- a/pkg/cluster/cluster.go
+++ b/pkg/cluster/cluster.go
@@ -841,6 +841,10 @@ func (c *Cluster) compareServices(old, new *v1.Service) (bool, string) {
 		return false, "new service's owner references do not match the current ones"
 	}
 
+	if !reflect.DeepEqual(old.Spec.Selector, new.Spec.Selector) {
+		return false, "new service's selector does not match the current one"
+	}
+
 	return true, ""
 }