diff --git a/kqueen/engines/openstack_kubespray.py b/kqueen/engines/openstack_kubespray.py
index b27c1bad..003c8dc8 100644
--- a/kqueen/engines/openstack_kubespray.py
+++ b/kqueen/engines/openstack_kubespray.py
@@ -610,7 +610,10 @@ def validate_ip(address):
             ipaddress.ip_address(address)
             return address
 
-        self.meta["master_count"] = self.cluster.metadata["master_count"]
+        mc = self.cluster.metadata["master_count"]
+        if mc % 2 == 0:
+            raise ValueError("Master node count must be an odd number at least 3 or greater")
+        self.meta["master_count"] = mc
         self.meta["slave_count"] = self.cluster.metadata["slave_count"]
 
         self.meta["dns"] = [validate_ip(ip) for ip in