[Systems] [OLPC-AU] Australian mirror for XO builds

David Farning dfarning at gmail.com
Sun Feb 27 23:34:57 EST 2011

-----Original Message-----
From: Sridhar Dhanapalan [mailto:sridhar at laptop.org.au] 
Sent: Sunday, February 27, 2011 7:17 PM
To: David Farning
Cc: OLPC Australia list; systems
Subject: Re: [OLPC-AU] Australian mirror for XO builds

On 26 February 2011 09:31, David Farning <dfarning at activitycentral.com>
> On Wed, Sep 22, 2010 at 9:19 PM, Sridhar Dhanapalan 
> <sridhar at laptop.org.au> wrote:
>> AARNET have kindly agreed to provide Australian mirroring for the 
>> official XO builds:
>>  http://mirror.aarnet.edu.au/pub/olpc/
>> This mirror will be updated daily.
>> This should hopefully make the builds easier to download. If your ISP 
>> has a peering agreement with AARNET, you may also be able to download 
>> without depleting your download quota.
> Another thought might be to work with the sysadmins from Sugar Labs to 
> use the existing sugar labs download network.
> The Sugar Labs download network serves http://download.sugarlabs.org/ 
> and http://activities.sugarlabs.org//en-US/sugar/ a.sl.o is nearing 
> 5million activity downloads:)
> The Sugar Labs sysadmins can add aarnet.edu.au to the mirror 
> configurations so that all download requests from Australia are served 
> via the aarnet.edu.au mirror.
> From that point forward it will just be a matter of rsyncing au builds 
> to downloads.sugarlabs.org . mirrorbrain will handle the rest.

|What would it take to set up something like this? I can ask AARNET to
mirror the download.sugarlabs.org, if that's required.

+1. We ask AARNET to mirror download.sugarlabs.org via rsync. Then add
AARNET to the list of known mirror in mirrorbrain.

|Is the redirect automatic? That is, if someone in Australia tries to
download from sugarlabs.org, can they automatically served by AARNET?
|That would make our downloads much faster.

+1. The initial http request (very small) goes to the primary server hosted
in Boston by the Free Software Foundation. Using GEOIP to determine physical
locality and an Apache module named mod_asn to determine network locality
the download request is redirected to the best mirror. In the case of
Australia that would be AARNET.


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