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Re: [Linux-cluster] How to run same service in parallel in RedHat Cluster 5.0



On 09/27/2011 05:04 PM, Ruben Sajnovetzky wrote:
> 
> Good example, thanks.
> Not sure if is doable because we could have 10 servers and the idea to have
> 10 service instances could be tricky to admin :(

Oh? How so? The file would be a bit long, but even with ten definitions
it should still be manageable. Particularly so if you use a tool like luci.

> What about the other q, related with the usage of same name of devices and
> mounting points?

I didn't follow that question. Rather, that sounds like a much bigger
question...

If '/opt/app' is local to each node, containing separate installs of the
application, it should be fine. However, I expect this is not the case,
of you'd not be asking.

If, on the other hand, '/opt/app' is a shared storage (ie: an NFS mount,
GFS2 partition, etc) then it should still be fine. Look again at that
link and search for '/xen_shared'. That is a common chunk of space
(using clvmd and gfs2) which is un/mounted by the cluster and it is
mounted in the same place on all nodes (and uses the same LV device name).

If I am not answering your question, please ask again. :)

-- 
Digimer
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