[CentOS] Re: yum vs up2date

[Scott Silva]

Les Mikesell spake the following on 9/7/2006 10:47 AM:
> On Thu, 2006-09-07 at 18:08 +0100, Lance Davis wrote:
> 
>> CentOS 3 wont have the same issue because all updates are referenced via a 
>> round robin set of mirror.centos.org, which will always be seen as the 
>> same url by the proxy.
> 
> What's the problem with that scheme?  It's hundreds of times faster
> on my second and subsequent machines - and would be for anyone else
> going through a proxy configured to cache large objects.
> 
>>> Maybe those claimed 1.5 million users are really a few users or
>>> locations
>>> with a lot of machines...  Letting proxies work as designed would
>>> make sense to me.
>> Well the issue is that you want a proxy to always hit the same mirror - 
>> (which you can configure) whereas we want to spread the load between the 
>> mirrors ...
> 
> What I want is for the default install to work using standard
> cache techniques.   The 'you can configure' concept only works if
> you know everyone else sharing the same proxy and can pre-arrange
> every file download with all of them which is pretty unlikely in
> any organization large enough to even have a proxy.  A scheme that
> uses the same URL for the same file will always work automatically.
> If you do this, spreading the load won't be an issue since there
> will actually only be one download.  If you can't use the same
> set of mirrors as centos3, there has to be some way to make this
> happen based on some computation that would be repeatable - perhaps
> a server-side check that can see the requester's public source
> address and give back the best mirror URL or a sorted list that
> would always be the same for that source IP.
> 
If you are hoping for updates to hit a single cache, why not rsync over to a
server and then yum-update from there. Better than a cache because you can
control when the packages are there. Don't want to update today? Don't rsync
over. Then you can have your other servers and workstations running yum in
cron, and don't have to manually run yum-update on them. You will only have
updates when you decide to mirror over from an official mirror.

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