diff --git a/slapos/recipe/erp5/template/my.cnf.in b/slapos/recipe/erp5/template/my.cnf.in
index d77c44d4a21a9a0db51f0f60919494df31344d33..cad03e092479d2560371c52af3f0d1864cc90e01 100644
--- a/slapos/recipe/erp5/template/my.cnf.in
+++ b/slapos/recipe/erp5/template/my.cnf.in
@@ -22,6 +22,10 @@ query_cache_size = 32M
 
 plugin-load = ha_innodb_plugin.so
 
+# By default only 100 connections are allowed, when using zeo
+# we may have much more connections
+# max_connections = 1000
+
 # The following are important to configure and depend a lot on to the size of
 # your database and the available resources.
 #innodb_buffer_pool_size = 4G