[MOBY-l] Multiple Centrals on Same server

[Mark Wilkinson]

In addition to that comment - just last week Eddie and I discovered a bug  
in the code that was supposed to allow MOBY::Client::Central to refer to  
another *single* registry by another name.  That may have been the only  
bug, and it may work perfectly from now on, but... say a prayer before you  
try it :-)

M



On Sun, 11 Feb 2007 19:40:17 -0800, Mark Wilkinson <markw at illuminae.com>  
wrote:

> Hi Karthik!
>
> Actually, I didn't express myself clearly.  Running multiple MOBY  
> Centrals
> on the same machine is fine - I know from personal experience that I can
> run up to three instances on the same server.  It is the CLIENT libraries
> that I am not sure about.  I have never tried "in the real world" to use
> the Perl client libraries to talk to more than one instance of MOBY at  
> the
> same time.  I wrote them such that they SHOULD be able to do this, but I
> have never thoroughly tested this functionality, so I am not certain that
> it will work for you.
>
> I can assure you, however, that running multiple instances of teh  
> registry
> on the same machine in different instances of Apache works just fine :-)
>
> M
>
>
>
>
> On Sun, 11 Feb 2007 19:35:51 -0800, Rajasekar Karthik
> <karthik085 at gmail.com> wrote:
>
>> Mark,
>>
>> You are right. I will just setup multiple central on different machine.
>> After I am more comfortable with MOBY, I will try it.
>>
>> On 2/11/07, Mark Wilkinson <markw at illuminae.com> wrote:
>>>
>>> As far as I know, nobody has ever tried this, so you are breaking new
>>> ground (and as someone new to MOBY, that might not be the easiest thing
>>> to
>>> do :-) )
>>>
>>> But the answer to your question is that you can only run one instance  
>>> of
>>> MOBY Central per instance of the Apache server.  You can run multiple
>>> instances of Apache, each with their own config file, where each config
>>> file points to a different mobycentral.config file.  On the client side
>>> (in Perl, I don't know about Java) you can create an instance of
>>> MOBY::Client::Central that connects to two different MOBY Centrals by
>>> name
>>> (you create the name when you assign the URL during creation of the
>>> object), and you have to specify the name of the MOBY Central you are
>>> addressing when you make your MOBY Central call using the "Registry =>
>>> "somename"" parameter.
>>>
>>> Some MOBY::Client::Central calls don't allow you to address more than
>>> one
>>> registry.  In particular, ones that involve registration of new  
>>> objects,
>>> service types, or namespaces.  That's because the ontologies are  
>>> assumed
>>> to be canonical, and can only exist in one place -
>>> mobycentral.icapture.ubc.ca - if you create your own registry and chose
>>> to
>>> run your own ontologies there is NO guarantee that you will continue to
>>> be
>>> interoperable with any other services in the world.
>>>
>>> Having said that, for other calls (like findService and  
>>> registerService)
>>> you should be able to run as many registries as you wish.
>>>
>>> ... caveat emptor... I don't think anyone has EVER tried to do this, so
>>> the code might not work...
>>>
>>> M
>>>
>>>
>>>
>>>
>>>
>>> On Sun, 11 Feb 2007 19:20:56 -0800, Rajasekar Karthik
>>> <karthik085 at gmail.com> wrote:
>>>
>>> > Hi,
>>> >
>>> > Is it possible to setup multiple local centrals on a same server?  
>>> With
>>> > the
>>> > databases, there can be multiple ones created. All the executables
>>> like
>>> > MOBY-Central.PL, OntologyServer.cgi....can be moved into two
>>> directories
>>> > of
>>> > webserver cgi-bin folder. But, what about httpd.conf configuration
>>> file
>>> > in
>>> > apache? How do I modify that?
>>> >
>>>
>>>
>>>
>>> --
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>>>
>>
>>
>>
>
>
>



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