Check shared memory and semaphores. Its probable that some other application is swallowing the resource sudo needs. This is a common method of DOS attacks and 'bot nets.
--Bruce On Mon, 2014-03-10 at 10:05 -0400, Brian Chabot wrote: > I'm trying to su to a user on a CentOS 6.4 x86_64 box and get the > error in the subject: > > [user1@cent6.4box ~]$ sudo su - user2 > su: cannot set user id: Resource temporarily unavailable > [user1@cent6.4box ~]$ > > The limits.conf file has the following entries: > * soft nofile 100000 > * hard nofile 100000 > * soft nproc 8192 > * hard nproc 32767 > > The current usage for pengine is: > [user1@cent6.4box ~]$ ps -eLF | grep user2 | wc -l > 1108 > [user1@cent6.4box ~]$ lsof | grep user2 | wc -l > 1558 > [user1@cent6.4box ~]$ > > While these are the majority of the processes and files in use on the > system, they are nowhere near the limits. > > I even increased the limits 10-fold and that has not worked. > > I'm kind of lost here. Usually the error indicates files or processes > over the limit but here... not so much. > > Any ideas? > > > > Brian Chabot > _______________________________________________ > gnhlug-discuss mailing list > gnhlug-discuss@mail.gnhlug.org > http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/ _______________________________________________ gnhlug-discuss mailing list gnhlug-discuss@mail.gnhlug.org http://mail.gnhlug.org/mailman/listinfo/gnhlug-discuss/
