Dynamic configuration management

Hi all,

I'm curious to hear to what level both commercial and open-source
systems known to the members of this list support dynamic configuration
management. That is, what's the state of the art in allowing one to
tweak the operational parameters, retrieve + inspect current state, etc,
in an on-line fashion, and to what degree can this be automated across
larger installations.

For what it's worth, I'd define "on-line" as anything better than
stopping the system, tweaking the config files, and restarting.

Marketing blurbs are welcome too, though you might prefer to send me
these off-line. Thanks.

Cheers,
Christian.
-- 
________________________________________________________________________
                                          http://www.cl.cam.ac.uk/~cpk25
                                                    http://www.whoop.org



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