[Yum] mirrorlist server selection
Seth Vidal
skvidal at fedoraproject.org
Wed Mar 17 20:16:59 UTC 2010
On Wed, 17 Mar 2010, Les Mikesell wrote:
> On 3/17/2010 1:46 PM, James Antill wrote:
>>
>>> For RPM Fusion's mirrorlist I am also running Matt Domsch's
>>> MirrorManager and we have two servers serving the mirrorlist. It is one
>>> DNS name which resolves to two IPs. Yum automatically uses the correct
>>> mirrorlist server if one of the servers is down (or if nothing answers
>>> on port 80).
>>
>> As far as I can see there is no code to do this anywhere, for either
>> mirrorlist or metalink yum just has a single URL and requests that
>> from urlgrabber (and AFAIK there's nothing in urlgrabber to try all
>> IPs for a given host, but maybe there is).
>
> I don't know about urlgrabber specifically, but most browser-type things
> these days will try all IPs from the list DNS returns until one succeeds. It
> makes life easier - and it is much nicer when working through caching proxies
> if all of the targets have the same name instead of having every host being
> updated pick a randomly different mirror name and download new copies of
> everything.
It's not how ping, for example works, or telnet, or anything - I can think
of.
-sv
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