-- William Gibson, All Tomorrow's Parties
After messing around with plain old Jumpstart for a day, I got sick of it and decided to try out Jumpstart Enterprise Toolkit after eryc mentioned it, a bunch of code living on stop of Jumpstart meant to make lives easier. It does. Getting things set up, adding hosts, etc, goes from being kind of tedious to trivial. The real killer for me was dealing with Solaris's DHCP manager. Man, what a weird, annoying thing.
So now I have Jumpstart set up in Parallels on my laptop (that's 30GB I won't be getting back anytime soon), which is a pretty useful thing to have. I suppose next I'll set an FAI VM for those Debian boxes I still haven't replaced...
Someone in #opensolaris yesterday mentioned they had a Debian Etch zone branded zone running. And it looks pretty trivial to do, too.
Derek Crudgington, of Joyent, has a post over on his blog about using DTrace to instrument MySQL (which does not have any DTrace probes). As long as you know the function names you're interested in, you can some really useful information out of it.
The fact that you can get that information, which would typically get you a major performance hit from MySQL itself, without MySQL having to be touched, restarted, or impaired, is just another example of how great DTrace is.