Active / Passive MQ cluster without HA

[iankil]

Hi, we have a requirement to create an active / passive MQ cluster across two sites. Unfortunetly we currently do not have the network infrastructure in place to support an HA cluster.

I have been informed, by one of my webshpere colleagues, that MQ can support this configuration without involving HA, but I can't find any documentation to support this.

I thought I would therefore ask the experts. The Architects plans are to have a p570 at each site running AIX v 5.3 and Websphere MQ v 6 running in a MQ cluster. The requirement is to have this cluster in place such that we have the ability to bring down either site A or site B without affecting the availability of the qmanagers.

As I say, I can'y see how this will be possible without involving HA, but you guys might be able to put me right.

Thanks in advance

Ian

 

[trifo]

iankil: MQ itself offers a cluster functionality, but this is only about sharing MQ namespace. There is a MQ supportpac to make MQ smart enough to run under HACMP.
These things will not satisfy your needs.

Even though, if you have a shared filesystem (like GPFS), you can share the MQ related filesystems between sites, and thus on failure you can shut down MQ on one site and start it up on another. If there was no logical failure in the filesystem, MQ should start up seamlessly, even without losing permanent messages.

But it will be your fun to write scripts for ip/service migration, heratbeat, etc.

--Trifo