On Tue, Dec 09, 2003 at 05:58:51PM +0100, Giacomo Mulas wrote: > On Tue, 9 Dec 2003, Walter Tautz wrote: > > > just wondering if this would be a good idea. We currently have > > >80 machines that do an update once a day on this host so > > I think it may be a good idea to mirror the archive locally, say > > once a day via rsync? > > I have a similar situation and I do mirror security. Of course, in > /etc/apt/sources.list I have both my mirror _and_ security.debian.org, so > that if an update already made it into the mirror all computers get it > from there, otherwise they _still_ get it from security. I also use a > proxy, so that anyway updates get downloaded once even if they come from > security and not from the local mirror. It requires a little bit of work > to properly set it up (not much), but then it works like a charm. On a cluster I run, and on my Debian machines at home, I have /var/cache/apt shared between the nodes with NFS. I haven't done anything about sharing package lists yet, so all the nodes have to apt-get update individually. I think this is non-optimal, because apt-get update writes /var/cache/apt/pkgcache.bin (and srcpkgcache.bin), so the contents of those files depends on which machine did the last apt-get update, and they don't all have the same things in their sources.list. (e.g. some have only sarge, some have stable+unstable, some don't have and deb-src lines.) Anyway, it seems to work, and packages only get downloaded once. I know that apt does enough locking that NFS sharing /var/cache/apt is safe. -- #define X(x,y) x##y Peter Cordes ; e-mail: X(peter@cor , des.ca) "The gods confound the man who first found out how to distinguish the hours! Confound him, too, who in this place set up a sundial, to cut and hack my day so wretchedly into small pieces!" -- Plautus, 200 BC
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