diff --git a/common/pxc-db/Chart.yaml b/common/pxc-db/Chart.yaml
index 1f891091b1..86cd68fc1c 100644
--- a/common/pxc-db/Chart.yaml
+++ b/common/pxc-db/Chart.yaml
@@ -16,7 +16,7 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 0.1.20
+version: 0.1.21
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
diff --git a/common/pxc-db/templates/cluster.yaml b/common/pxc-db/templates/cluster.yaml
index 5f2a8b7814..8836457f8d 100644
--- a/common/pxc-db/templates/cluster.yaml
+++ b/common/pxc-db/templates/cluster.yaml
@@ -60,6 +60,9 @@ spec:
     apply: disabled
   {{- $pxc := .Values.pxc }}
   pxc:
+    {{- if gt (int $pxc.size) 7 }}
+    {{- fail "The Galera cluster must not be bigger than 7 nodes" }}
+    {{- end }}
     size: {{ $pxc.size }}
     {{- if $pxc.image.override }}
     image: {{ $pxc.image.override }}