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Re: conserver extras

Andras.Horvath Andras.Horvath@cern.ch
Mon, 17 Nov 2008 14:40:18 GMT

On Mon, Nov 17, 2008 at 03:14:16PM +0100, Fabien Wernli wrote:

> How do you sync conserver.cf among conservers?

I don't. Each headnode only knows only its own clients. From the same
central database that is used to configure the headnodes, a DNS alias is
registered as "myclienthost.headnode.cern.ch" to point to the actual
headnode, and this is what end users use to actually connect to the
respective consoles.

I could, I suppose, generate one large conserver.cf everywhere, but that
would mean having to update ~200 headnodes whenever anything changes.

> > - run conserver as user 'uucp', not as root (modified RedHat init
> >   script -- we run Scientific Linux aka recompiled RHEL)
> er... why on earth uucp?

Because it's there and unused :), and because ttyS devices are
660 root:uucp by default in RHEL5. Why not?

> I have working wrapper scripts around IPMI, SUN ALOM, ILOM, and
> V[24]0z SP, IBM e32[56] and ls20 bladecenter. Some are already in
> conserver.com/contrib. Feel free to contact me if you're interested.

Gah, I haven't noticed that link :)

I had a look of what's up there, and I mostly don't need that (the most
common use case is standard serial or standard IPMI 2.0 SOL). The ILOM
one certainly looks interesting, but how do you pass
username/password/key to ssh?

BTW, my Quattor component generates proper exec lines directly into
conserver.conf for Xen VMs (no wrapper needed). The Xen dom0 is the
headnode for its domU virtual machines.