diff --git a/classes/cluster/virtual-mcp-allinone/init.yml b/classes/cluster/virtual-mcp-allinone/init.yml
index 718b47b..4aaa814 100755
--- a/classes/cluster/virtual-mcp-allinone/init.yml
+++ b/classes/cluster/virtual-mcp-allinone/init.yml
@@ -21,6 +21,7 @@
   mysql:
     server:
       version: '5.6'
+      max_connections: 20000
 # override on this level
   nova:
     compute: