Apache cannot be started:
[root@store conf]# service httpd start
Starting httpd : [Failed]
The following error can be found in the Apache error log file (
[Mon Oct 07 18:20:01 2013] [error] (28)No space left on device: Cannot create SSLMutex
Those errors means that there is a lack of inner-process communication resources in the system, such as semaphores or shared memory segments:
[root@store conf]# ipcs -us
------ Semaphore Status --------
used arrays = 126
allocated semaphores = 130
Increase the limits in "
kernel.msgmni = 1024
kernel.sem = 250 256000 32 1024
Load the new sysctl settings from "
[root@store conf]# sysctl -p