4 Replies Latest reply on Mar 13, 2010 3:33 AM by Tim Fox

Restart Sequence

Chiang Seng Chang Mar 8, 2010 11:36 AM

Hi,

I setup a Live/Backup Pair using Replication.

My question is what is the correct shutdown/restart sequence.

I would think it is:

1. Shutdown Live server (stop new messages publication/consumsion)

2. Shutdown Backup server

3. Start Backup server

4. Start Live server

However, I get the "data differs" error if I did the above.

Does it mean that the live data store has to be synced to the backup data store for each restart?

Thanks.

-cs

1. Re: HA Live/Backup Pair by Replication Shutdown/Restart Sequence

Clebert Suconic Mar 9, 2010 12:35 PM (in response to Chiang Seng Chang)

At the present you have always to sync the backup and live before startup.

That's something we are working on improving for 2.2.0
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2. Re: HA Live/Backup Pair by Replication Shutdown/Restart Sequence

Chiang Seng Chang Mar 10, 2010 2:17 PM (in response to Clebert Suconic)

Thanks for the answer.
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3. Re: HA Live/Backup Pair by Replication Shutdown/Restart Sequence

BJ Chippindale Mar 11, 2010 5:56 PM (in response to Clebert Suconic)

If the hornetq is embedded in JBoss 4.2.3 clusters, how do we sync this?

Do both JBoss instances have to be down?

Leads me off-topic with wondering how an active-active JBoss works with a hornetq live-backup HA arrangement built in... if this can even be done.

respectfully
BJ

I think I will ask this as a standalone question.

Message was edited by: BJ Chippindale
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4. Re: HA Live/Backup Pair by Replication Shutdown/Restart Sequence

Tim Fox Mar 13, 2010 3:33 AM (in response to BJ Chippindale)

The question on syncing is explained in the user manual, chapter on HA
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