Date: Sun, 8 Apr 2007 20:46:16 +0100 From: Ceri Davies <ceri@submonkey.net> To: Robert Watson <rwatson@FreeBSD.org> Cc: Dag-Erling Sm?rgrav <des@des.no>, Andrew Pantyukhin <infofarmer@FreeBSD.org>, Pawel Jakub Dawidek <pjd@FreeBSD.org>, freebsd-arch@freebsd.org Subject: Re: Host ID. Message-ID: <20070408194616.GN90410@submonkey.net> In-Reply-To: <20070408105140.L77212@fledge.watson.org> References: <20070407120656.GD63916@garage.freebsd.pl> <cb5206420704070607j7afe5349r180151dac1ec3e92@mail.gmail.com> <20070407145154.GG63916@garage.freebsd.pl> <86d52fut50.fsf@dwp.des.no> <20070408105140.L77212@fledge.watson.org>
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[-- Attachment #1 --] On Sun, Apr 08, 2007 at 10:54:34AM +0100, Robert Watson wrote: > > On Sun, 8 Apr 2007, Dag-Erling Sm?rgrav wrote: > > >Pawel Jakub Dawidek <pjd@FreeBSD.org> writes: > >>If we move disks with root file system, it's this more or less the same > >>host, isn't it? > > > >No. I recently installed three servers by replicating the disk from a > >fourth and changing the host name and IP address in rc.conf. > > Yes, one of the nice properties of FreeBSD -- as opposed to, say, Windows, > is that it's trivial to install a hundred boxes by dropping the same image > onto all of them and configuring host-specific parameters using DHCP. But > there is a tricky tension here: the notion of a persisting host ID is very > useful, in the a similar way to the way in which a persisting SSH host key > is useful. If we're going to adopt a host ID model, we may want to make > generation and configuration of the host ID conditional on an explicit > variable in rc.conf (i.e., hostid_enable="YES" which causes it to be > generated the first time and loaded future times, similar to SSH keys), and > make it very easy to force a regen. That way, you can image the boxes with > the rc.conf setting set, but they don't generate host IDs until they boot > the first time. Or perhaps we need an equivalent to sys-unconfig[1] ? [1] http://docs.sun.com/app/docs/doc/816-5166/6mbb1kqj3?q=sysconfig&a=view Ceri -- That must be wonderful! I don't understand it at all. -- Moliere [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFGGUaIocfcwTS3JF8RAny1AKDDzkILwo2az4CaZOV576aoojUmyACgnQ/E 2M3m12lEpwKCKhPXKURpJg0= =gBkf -----END PGP SIGNATURE-----
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