[AG-DEV] Bridge Registry information via a text file

[Christoph Willing]

The CVS code has just been updated to enable file urls to be used  
(again?) so this functionality will be available in the 3.1 release  
(or CVS snapshots).

Now, if you had a file at /etc/AccessGrid3/Config/peers.txt  
containing the line (for instance) "hall.vislab.uq.edu.au:8030", you  
could then add the line "file:///etc/AccessGrid3/Config/peers.txt"  
into the Bridge Registries panel (in Tools->Preferences->Bridging)  
and expect it to work the same way as an http:// entry.


chris


On 30/10/2007, at 4:52 PM, Andrew Sharpe wrote:

> Hi Jason,
>
> I believe this capability already exists.  I've successfully used a  
> local bridge registry file using a file:// url because I was behind  
> an authenticated proxy and the python version I was using didn't  
> support authenticated proxies.
>
> HTH, Andrew
>
> Jason Bell wrote:
>> G'day Ben
>>
>> Thanks for your email....  My comment wasn't about forcing users  
>> to use
>> one bridge....  It was more the comment that if, for whatever  
>> reason, a
>> user cannot access the URL directly to get to the "bridge registry",
>> then no bridges are listed.
>>
>> The use of vv3.mcs.anl.gov:8030 is just an example.
>> What would be nice is if you can associate "vv3.mcs.anl.gov:8030" or
>> "sam.ag.manchester.ac.uk:8030" directly without having to access a
>> remote webpage to obtain this information.
>>
>> The reason why this is important and is some locations pass port 80
>> (http) through a proxy, whereas they can directly access port 8030.
>>
>> It has come to my attention that you could probably use something  
>> like
>> file:///C:/mydir/peers.txt with those addresses and it should work,
>> though I need to try it.  Unfortunately this isn't obvious.
>>
>> Anyway, instead of pointing to a external web URL, it would be  
>> nice to
>> be able to directly point to a local file.
>>
>> I hope this clarifies my request.
>>
>> Cheers,
>> Jason.
>>
>> -----Original Message-----
>> From: Ben Green [mailto:Ben.Green at manchester.ac.uk] Sent: Monday,  
>> 29 October 2007 8:50 PM
>> To: Jason Bell; ag-dev at mcs.anl.gov
>> Subject: RE: [AG-DEV] Bridge Registry information via a text file
>>
>> Hi Jason,
>>
>> The reason we get UK users to point their clients at our own registry
>> peers file is so that they connect to our bridge registry first.
>>
>> It reads as follows:
>>
>> sam.ag.manchester.ac.uk:8030
>> fraser.ag.manchester.ac.uk:8030
>> vv3.mcs.anl.gov:8030
>>
>> So our peers.txt file is *not* the same as the default registry  
>> address.
>> The whole point is that it guarantees users will always have a  
>> working
>> bridge registry in the unlikely event of the ANL bridge registry  
>> going
>> down.
>>
>> The other reason we do this is that the current client can only  
>> display
>> about 10 bridges and because the default ANL registry lists more than
>> this, the client would sometimes omit the AGSC bridges. Our bridge
>> registry only contains a small number of bridges, so they will  
>> always be
>> displayed.
>>
>> But I think client v3.1 overcomes these issues....
>>
>> Cheers, Ben.
>> |=============================|
>> | Ben Green                   |
>> | Access Grid Support Centre  |      | Room G49-H                  |
>> | Research Computing Services |
>> | Kilburn Building            |
>> | University of Manchester    |
>> | Oxford Road                 |
>> | Manchester                  |
>> | M13 9PL                     |
>> |-----------------------------|
>> | Tel. 0161 306 6621          |
>> | Fax. 0161 275 0637          |
>> | ben.green at manchester.ac.uk  |
>> | http://www.agsc.ja.net      |
>> |=============================| -----Original Message-----
>> From: owner-ag-dev at mcs.anl.gov [mailto:owner-ag-dev at mcs.anl.gov] On
>> Behalf Of Jason Bell
>> Sent: 29 October 2007 06:42
>> To: ag-dev at mcs.anl.gov
>> Subject: [AG-DEV] Bridge Registry information via a text file
>>
>> G'day all
>>
>> I'm not sure if I should submit this as a feature request or  
>> not... (Let
>> me know and I will submit it to bugzilla)
>>
>> There are some AG's around the place that have problems connecting to
>> Bridge Registries, thereby not getting a list of unicast bridges.
>>
>> As a workaround, they run their own webserver that contains a  
>> peers.txt
>> file that points to the same information as the default registry  
>> address
>> (Example vv3.mcs.anl.gov:8030).   Would it be possible to include  
>> adding
>> a bridge registry using a text file, rather than a URL only???
>>
>> As I know this "work around" overcomes some of the proxy issues.
>>
>> I'm hoping someone could implement this.
>>
>> Cheers,
>> Jason.
>>
>> --------------------------------------------
>> Jason Bell, B.I.T.
>>
>> B. Info. Tech. (Honours) Student
>>
>> High Performance Computing Support Officer,
>> Network Engineer
>> Information Technology Division
>> Central Queensland University
>>
>> E-mail : j.bell at cqu.edu.au
>> Phone : 07 4930 9229
>> --------------------------------------------
>> Patience is a virtue.
>>
>> But if I wanted Patience,
>> I would have become a Doctor.
>> --------------------------------------------
>>
>>
>>
>

Christoph Willing                        +617 3365 3850
QCIF Access Grid Manager
University of Queensland