Can JBoss support active/passive

[wangdongfox]

I know JBoss Cluster support failover and load balance,but now I only need failover, can JBoss support active/passive?

[brian.stansberry]

For web requests, mod_jk can support that (in your mod_jk conf, comfigure disabled=true for a worker to passivate it).

For EJB requests you'd need to implement some kind of custom LoadBalancePolicy; there's no out of the box support for it.

[wangdongfox]

Thank for your response, but I only need one instance worked in a cluster environment, another instance must be standby.Our architecture is that a MDB cluster in environment,but only one MDB instance can service, the other must be standby.

[grdzeli_kaci]

hi all,
i have the same question,

Does JBoss Application Server support Active - StandBy Cluster Configuration ????
Is There any doc about Active - StandBy configuration for clustering ???
i have no problem about Active - Active cluster configuration.

This is necessary request from my company ( i am a developer for this company) , we are trying to bye JBoss Application Support, but we are trying to define all capabilities of JBoss Application Server (JBoss Cluster is one of them).


Regards,
Paata.

[brian.stansberry]

wangdongfox, for the use case you describe you could deploy the MDB in the deploy-hasingleton directory. That's not a true active/passive because the bean is not deployed and passively waiting to receive messages. Instead it will be deployed and begin receiving messages if the master node fails or is shutdown. I would expect that for most MDB use cases that would be sufficient, since a messaging based app by definition doesn't assume the message receiver is always available.