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Bug#705126: kfreebsd-9: maxproc limit exceeded, caused by sshd



Steven Chamberlain wrote:
> kernel: maxproc limit exceeded by uid 0, please see tuning(7) and login.conf(5).

I only ever saw this happen on one server, which I no longer have,
and could never reproduce it anywhere else.

nagios3/icinga probes for a running SSH service could trigger it after
some time.  A public-facing SSH service could get into this state even
more quickly due to frequent connections by botnets.

Killing some random process on the system would sometimes recover it
from this state, until it happens again.

It never seemed that an excessive number of processes was actually
running, so I thought it could be a bug in the kernel's counting of
processes or threads, or maybe in glibc's reclaimation of resources
after threads exit.

Regards,
-- 
Steven Chamberlain
steven@pyro.eu.org

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