Hi,

In Wildfly 10, it is possible to make the whole JEE application HA singleton (active-passive cluster configuration).

In active-active cluster configuration, it is also possible to write a service implementing Singleton Service to manage individual singleton EJB annotated with @Singleton @Clustered so that each active cluster member will have one instance of the singleton EJB, but only one across the cluster will be active.

I am wondering if there is a way to configure a singleton EJB so that only one will be active across a cluster, instead of write a service to manage this function.

Thanks,

Wayne

Reference:

https://docs.jboss.org/author/display/WFLY10/Singleton+MSC+services