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maintaining many Xen VMs
I recently brought up 3 DomUs; the result, of course, is that I now have 3
more machines to administer. This is known as a bad tradeoff... I'm
curious, though, how other people are solving this.
My (NetBSD) DomUs are going to be mostly identical. I was thinking of
having a shared, read-only /usr and separate /var. I probably need
separate roots, if only to have separate /etc/rc.conf files. /usr will be
a real partition, probably shared with the Dom0. The Dom0 would also have
a separate partition that held the vnds for the DomUs.
The problem is updating pkgsrc -- compilations on the Dom0 (with the DomUs
shut down) would be slow, since I'm not allocating much phyiscal memory to
Dom0.
Anyway -- how are other people handling this? I thought about NFS, but I
suspect it's too slow.
--Steven M. Bellovin, http://www.cs.columbia.edu/~smb
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