Re: mirrorlist server selection

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