[CentOS] Re: Automatic site selection for dowload

[Les Mikesell]

Johnny Hughes wrote:
> 
>> Is there a way to coax several hosts behind the same caching proxy to 
>> use the same URL as the 1st choice but still fail over and try others 
>> if there is a problem?  And preferably without having to manually edit 
>> files on each machine or coordinate choices.
> 
> Fatestmirror does not work with a proxy server ... however you can 
> adjust your yum.conf to use the priority failover method, from 'man 
> yumconf':
> 
> ===================================================================
> failovermethod
> 
>      Either ‘roundrobin’ or ‘priority’.
> 
>      ‘roundrobin’  randomly selects a URL out of the list of URLs to 
> start with and proceeds through each of them as it encounters a failure 
> contacting the host.
> 
>      ‘priority’ starts from the first baseurl listed and reads through 
> them sequentially.
> 
>      failovermethod defaults to ‘roundrobin’ if not specified.
> ===================================================================
> 
> You can use baseurl=<firstchoice> at the top, then other ones after 
> that.  They will be picked in order.

But this doesn't work if two different people in the same building do 
updates since they won't know the other's choice of order.  Plus it is 
painful to have to edit files on every machine to make something happen 
that should work by default.  I liked the Centos 3.x approach with rrdns 
much better since all requests had the same URL even when served by 
different sites.

-- 
    Les Mikesell
     lesmikesell at gmail.com