[AG-DEV] ANL Bridge registry turned off ?

Lloyd Pearson lloyd.pearson at otago.ac.nz
Wed Jun 6 19:20:35 CDT 2012


Thanks Chris,

Currently using only http://www.ap-accessgrid.org/registry/peers.txt I get only the APAG bridge.

Deleting that http://www.ap-accessgrid.org/registry/peers.txt and using only http://www.accessgrid.org/registry/peers.txt I get 7 bridges but not APAG.

UQ-RCC
ARCS-Melbourne
Westgrid
LSU
UPSAG
And 2 x NDHU bridges which are disabled.

Using both entries I get APAG as well to give a total of 8 bridges.

(Graeme Glen looks after the Auckland bridge, so I'm sure he'll see this discussion and hopefully restart. - There are a few uni's in NZ that are running unicast so they'll probably raise a question soon.)

Regards,
Lloyd Pearson
AVC Operator
University of Otago
Ph +64 3 479 8997
lloyd.pearson at otago.ac.nz


-----Original Message-----
From: Christoph Willing [mailto:c.willing at uq.edu.au] 
Sent: Thursday, 7 June 2012 11:18 a.m.
To: Lloyd Pearson
Cc: ag-dev
Subject: Re: [AG-DEV] ANL Bridge registry turned off ?


On 07/06/2012, at 8:02 AM, Lloyd Pearson wrote:

> Hello team,
>
> Currently I get 7 bridges after a purge with only 
> http://www.accessgrid.org/registry/peers.txt
>  as a bridge registry.
> APAG
> UQ-RCC
> ARCS-Melbourne
> Westgrid
> LSU
> And 2 x NDHU bridges which are disabled.
>
> Using only http://www.ap-accessgrid.org/registry/peers.txt the result 
> is the same.

Lloyd,

I think there's some sort of timeout or ageing mechanism such that if you did a purge before removing www.accessgrid.org/... and then another purge, the list of bridges will remain the same as before. I think if you were to wait 5 (or 10, or 15, whatever ....), another purge would produce fewer bridges. Also, I think you'll need to Save after deletions to the peers.txt entries.

>
> Another PC which has not been purged for several weeks currently lists 
> about 26 bridges.

Yes we've found that too. As soon as you do a purge on that machine, it will look through the bridge registries for bridges to test and add to the list of bridges - also removing bridges not registered with whatever registries you have enabled (bearing in mind the ageing mechanism for remembering them).


> The Auckland bridge doesn't show on the recently purged PC, even 
> though it appears on the unpurged PC and it does appear to be useable 
> when selected. (That PC normally runs multicast.)

Most of the previous bridges are still running and will work if their existence is still recognised e.g. by unpurged VenueCLients. I think they probably need to be restarted so that they're registered with the new registry. Do you know who runs that bridge to ask them to restart it?


chris


> -----Original Message-----
> From: ag-dev-bounces at lists.mcs.anl.gov 
> [mailto:ag-dev-bounces at lists.mcs.anl.gov
> ] On Behalf Of Christoph Willing
> Sent: Thursday, 7 June 2012 9:25 a.m.
> To: Todd Zimmerman
> Cc: ag-dev
> Subject: Re: [AG-DEV] ANL Bridge registry turned off ?
>
>
> On 07/06/2012, at 12:33 AM, Todd Zimmerman wrote:
>
>> On 06/06/2012 03:52 AM, Christoph Willing wrote:
>>>
>>> Until the DNS is transferred and we can create an entry for 
>>> vv3.accessgrid.org, I wonder if a plain IP address would work there 
>>> instead? Todd, could we try this by you changing the peers.txt file 
>>> to be:
>>> 130.102.78.188:8030
>>> please?
>>
>> Done
>
> Thanks. It seems to have worked; I see a lot more bridges now - 
> although not yet as many as in the old days ...
>
>
> chris
>
>
> Christoph Willing              +61 7 3365 8316
> Research Computing Centre
> University of Queensland
>
>
>

Christoph Willing              +61 7 3365 8316
Research Computing Centre
University of Queensland





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