I am attempting to set up a Postgres 8 DataSource in a cluster. I am running
jboss-4.0.3SP1 with EJB3.0. I have been following the wiki articles
ConfigJBossMQDB and JBossMQHAOverview in terms of setting up my PostgresDS and
removing the hypersonic one.
I am testing this with a simple MDB (deployed to two nodes) which just does a
println when it receives a message from a client. The nodes are running
identical jboss configurations. The DB configuration seems to work in that
messages are received by the beans on each node as expected and I can see
messages queued up and removed in the jms_messages table. Also, TRACE logging
for mq seems to show normal activity.
Although running this simple test seems to work, the problem occurs on start up
of the 2nd node. In other words, everything starts normally on the first node
(the one containing the postgres DB), but adding the additional node causes
startup errors to occur on those nodes such as:
--- MBeans waiting for other MBeans ---
ObjectName: jboss.ejb:service=EJBTimerService,persistencePolicy=database
State: CONFIGURED
I Depend On:
jboss.jca:service=DataSourceBinding,name=PostgresDS
ObjectName: jboss.mq.destination:service=Queue,name=tutorial
State: CONFIGURED
I Depend On:
jboss.mq:service=DestinationManager
--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: jboss.jca:service=DataSourceBinding,name=PostgresDS
State: NOTYETINSTALLED
Depends On Me:
jboss.ejb:service=EJBTimerService,persistencePolicy=database
ObjectName: jboss.mq:service=DestinationManager
State: NOTYETINSTALLED
Depends On Me:
jboss.mq.destination:service=Queue,name=tutorial
Even though I get these errors, the test mentioned above works. The issue
seems to be that the PostgresDS lives on the first node, but services on the
other node depends on it. I followed the steps to make the DS a singleton, but
there seems to be a problem with referencing it remotely since it only appears
in the local JNDI, ie java:/PostgresDS.
Is the PostgresDS supposed to be only available locally? If not, what do I
have to do to make it available in the global JNDI namespace? Or, should I
specify in the the specific node where the service is running?
Any help is appreciated. Thanks!
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