The need for a multi-homed machine is a weblogic clustering PROBLEM.
Apparently they want you to buy large numbers of small machines or
equip larger machines with dozens of NICs to make things scale. IMHO this
doesn't work very well...
Gemstone can do clustering on any machine you want, utilizing
large multi-cpu enterprise servers to their full capacity. Of
course clusters can use multiple of those beasts as well.
I'd rather buy one, two or perhaps three large enterprise servers and be
done with it then a whole farms of smaller machines just because one of my
software vendors has a strange idea about clustering...
Frank Sauer
The Technical Resource Connection
Tampa, FL
http://www.trcinc.com
> -----Original Message-----
> From: A mailing list for Enterprise JavaBeans development
> [mailto:[EMAIL PROTECTED]]On Behalf Of Cedric Beust
> Sent: Thursday, July 20, 2000 4:53 PM
> To: [EMAIL PROTECTED]
> Subject: Clustering and fail-over (was RE: EJB Inheritance,
> polymorphism
> and generic code)
>
>
> [changed the topic]
>
> > From: A mailing list for Enterprise JavaBeans development
>
> > Reading the messages on clustering and fail-over is very
> interesting. One
> > simple, or maybe not question, how do you test a clustered
> system to make
> > sure fail over really works?
>
> There are several techniques. From a developer's perspective, I have a
> multi-homed machine, allowing me to run several nodes in the
> cluster on a
> single machine. It makes it easier to debug (although you can also use
> separate machines and resort to VNC or VMWare, but that's
> more awkward).
>
> From an automated (testing and QA) point of view, you can
> fire the cluster,
> start the subsystems you want to test, kill some randomly
> chosen victims (VM
> exit) and make sure the operations were carried out correctly
> (or that they
> threw the right exceptions).
>
> --
> Cedric
>
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