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Showing posts from January, 2014

su: cannot set user id: Resource temporarily unavailable - Linux

   Restricting direct root login and using Wheel user always make better security, but some cases we may face below error, "su: cannot set user id: Resource temporarily unavailable"   To overcome this issue, we need to add / increase the number of processes value in /etc/security/limits.conf. A quick check about the number of operating system processes. # ps -U wheel-user | wc -l To add / increase the below value in /etc/security/limits.conf # wheel-user soft nproc(maximum number of processes) value admin soft nproc 2048 If this won't work, vi /etc/security/limit.conf # add / change on these line: *          soft   nproc       2047 *         hard   nproc       16384 *         soft   nofile       2048 *         hard   nofile      65536 Now you can try to login once again.. it will works.