From 188b46bf29b1fdcf7f625de78185fa5877912edf Mon Sep 17 00:00:00 2001
From: Dmitrii Golubtsov <evarome10@gmail.com>
Date: Fri, 25 Apr 2025 14:54:25 +0300
Subject: [PATCH] Add podAntiAffinity rule

---
 .../mysql-operator/templates/statefulset.yaml      | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/deploy/charts/mysql-operator/templates/statefulset.yaml b/deploy/charts/mysql-operator/templates/statefulset.yaml
index 2ff2e4c05..123c3d828 100644
--- a/deploy/charts/mysql-operator/templates/statefulset.yaml
+++ b/deploy/charts/mysql-operator/templates/statefulset.yaml
@@ -156,9 +156,19 @@ spec:
       nodeSelector:
         {{- toYaml . | nindent 8 }}
       {{- end }}
-      {{- with .Values.affinity }}
+      {{- if gt (int .Values.replicaCount) 1 }}
       affinity:
-        {{- toYaml . | nindent 8 }}
+        podAntiAffinity:
+          preferredDuringSchedulingIgnoredDuringExecution:
+            - weight: 1
+              podAffinityTerm:
+                labelSelector:
+                  matchLabels:
+                    {{ include "mysql-operator.selectorLabels" . | nindent 20 }}
+                topologyKey: kubernetes.io/hostname
+      {{- else if .Values.affinity }}
+      affinity:
+        {{- toYaml .Values.affinity | nindent 8 }}
       {{- end }}
       {{- with .Values.tolerations }}
       tolerations: