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 tostart with and proceeds through each of them as it encounters a failure contacting the host.
‘priority’ starts from the first baseurl listed and reads throughthem 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.