[MOBY-dev] BioMoby central dead...

[Paul Gordon]

It brings a tear (of joy) to my eye that Moby Central is becoming so 
essential, we need a backup. :-)

I think a European mirror is a great idea, because just having two 
servers here in Calgary would not have prevented the down-time 
experienced yesterday.  We'd need to change the dynamic Central lookup 
policy (which goes through biomoby.org) to change from returning one 
server to returning a list of servers.  Pretty simple, but still has a 
single point of failure, now at biomoby.org.  Dynamic Central lookup is 
disabled by default unless a connection to Central fails, so maybe it's 
not such a big deal (unless moby.ucalgary.ca AND biomoby.org in Boston 
(or wherever) fail at the same time).

The other (robust) option is to have an LSID that points to a document 
listing the servers.  The resolution protocol allows for redundant data 
serving in theory, but we'd need to set up moby as a "proper" authority 
that goes in the lsid.org DNSPTR records.

-Paul

Heiko Schoof wrote:
> Hi,
> we have implemented synchronization of moby centrals. But it needs 
> some testing under production conditions. Read-only should work fine. 
> So if anyone is willing and able to host an alternative 
> moby-central... we are in the process of setting one up, and could 
> possibly act as European mirror. But I need to discuss this with 
> Andreas first, and see in what time scale this is feasible.
> Has anyone else been experimenting with the synchronization code from 
> Andreas?
>
> What would then be missing is the implementation for a fall-back in 
> the client libraries, I think. In effect, the ability to give a second 
> moby-central, which is used if connections to the primary fail.
>
> Best, Heiko
>
> On 12.06.2008, at 09:41, sneumann wrote:
>
>> On Mi, 2008-06-11 at 19:10 +0200, Andreas Groscurth wrote:
>>> someone killed it again ;-(
>>
>> Hi,
>>
>> wouldn't that be the time to call for redundancy for moby-central ?
>> Either some read-only secondary server which keeps
>> at least the services running if the primary is unreachable,
>>
>> or even a full-blown anycast a la Root-DNS servers
>> with synchronized backend-something for the registry database ?
>>
>> Or has that already been discussed and dismissed ?
>>
>> Yours,
>> Steffen
>>
>> -- 
>> IPB Halle                    AG Massenspektrometrie & Bioinformatik
>> Dr. Steffen Neumann          http://www.IPB-Halle.DE
>> Weinberg 3                   http://msbi.bic-gh.de
>> 06120 Halle                  Tel. +49 (0) 345 5582 - 1470
>>                                   +49 (0) 345 5582 - 0
>> sneumann(at)IPB-Halle.DE     Fax. +49 (0) 345 5582 - 1409
>>
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