[ovirt-users] How to notify cluster nodes after "engine-config --set IPTablesConfigSiteCustom..." ?

Hello oVirt guru`s ! oVirt Engine Version: 4.0.5.5-1.el7.centos I updated the configuration of the firewall on the Engine server with "engine-config --set IPTablesConfigSiteCustom...". How to notify cluster nodes (all virtualization hosts) about the changes without reboot?