On Wed, 2007-03-07 at 22:56 +0000, John Hodrien wrote:
> On Wed, 7 Mar 2007, Jeffrey Law wrote:
> 
> > Ah.   Does the headnode ever need to do anything to control the stateless
> > nodes without human intervention (ie, does the head node ever fire off
> > commands to the clients via SSH?)
> 
> Yes.
> 
> > As an admin, do you ever remotely log into the clients via SSH?  If so, then
> > you probably need a persistent SSH private key for the clients.
> 
> Due to the way it works there's not really any need to have different keys on
> the slaves, so in the past I've just used the same keys for all slaves
Ah, yes, that will work too -- you make the cluster-wide key part of the
system profile.  Totally forgot about this approach.

> 
> The only other bit I have at the moment is X related.  Due to hardware
> failures I've got two different types of motherboards which require different
> X configs.  Currently this is simply detected at runtime, which works out as a
> better solution than using something like puppet.
Yea.  Are you using the newer X auto-config stuff, or are you just
runtime selecting from a set of config files you've specified?

The X config stuff is a long standing wart -- while the autoconfig
stuff has improved greatly, I'm still seeing better results with
storing the good X configuration on the puppet master and downloading
it to the clients.  Of course, I'm reimaging clients more often than
most :-)

> But as I said, partly I wanted to see how far StatelessLinux had got since the
> last time I looked at it.  It's nice to know what it can do, so that when I
> find myself in a situation that suits it later down the line, I notice.
Understood.  The focus right now is more around making it work with
things like puppet and cobbler/koan.  That takes us another step forward
in terms of integrating into the overall systems management direction
within Red Hat.

Jeff


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