On Fri, 30 May 2008, Ceri Davies wrote:
Thats something that the admin should take care for.
How might they do that? Remember that any command that works only when
the jail IP is "unambiguous" will become effectively non-deterministic as
a result of un-garbage collected jails. So
Is it feasible to change the hostname of a dying jail? We could prefix it
with some string at some point of the shutdown...
We'd be better off just dropping all the connections at that point.
TCP TIME_WAIT exists for a reason that it is better not to disregard. This
question gets a bit more complicated in light of vimage, which is something
we'll need to discuss at the August developer summit.
Also, TIME_WAIT is just one example of a jail persisting due to continuing
references to a credential -- there are other legitimate, albeit less common,
reasons that it may occur, and those are also valid use cases.
Robert N M Watson
Computer Laboratory
University of Cambridge
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