Warren Togami wrote:
On Wed, 23 Jan 2008 21:28:01 -0600, Les Mikesell <lesmikesell@xxxxxxxxx>
wrote:
Warren Togami wrote:
Yum and Proxy Caches: Current Dangers
=====================================
Users may be using proxy servers in 3 (or more) ways:
Is there a reasonable way to make yum automatically use files cached in
these local proxies when run by multiple users that share the proxy but
don't know about each other? Picking some random mirror for each will
defeat the caching since they will have different URLs to get the same
file.
http://fedoraproject.org/wiki/Infrastructure/Mirroring/SiteLocalMirrors
This page needs updating, but it sort of describes what you need to do.
Use your Fedora account to login to MirrorManager and add a private mirror
for yourself along with a site-local netblock in CIDR notation so the
mirror master knows to serve to you when yum clients come from your
network. After a few hours, mirror lists will serve your mirror first,
then random other mirrors in your country/region.
Interesting, but it still requires custom setup for any distro/version
that the proxy admin would want to support. What I'd really like to
happen is for yum to just always prefer the same URL when working
through the same proxy so caching would work by default without needing
to be aware of the cache content. This would work automatically if the
target was a single site, RRDNS, or geo-ip managed DNS, but you probably
can't arrange that for all the repo mirrors. There has to be some clever
way to get the same effect even when using a mirrorlist - like making
sure the mirrorlist itself is cached and always picking the same entry
so any client will use the same URL that the mirrormanger gave to the
first one that made a request. Of course you'd need a reasonable retry
mechanism to pick something else if this choice fails but I'd guess it
would be a big win in bandwidth use and load on the mirrors if it worked
most of the time to take advantage of existing local caches with no
modifications.
--
Les Mikesell
lesmikesell@xxxxxxxxx
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