Apache “semget: No space left on device” Semaphore Error Fix

Apache “semget: No space left on device”  Semaphore Error Fix:

Some times you may find Apache giving you ’semget’ errors in the error_log and failing to start/function. You can remedy this via the following script:

for i in `ipcs -s | grep nobody | awk '{print $2}'` ; do ipcrm -s $i ; done

That should clear out the semaphores and you should be able to restart Apache.

What is a semaphore?

http://en.wikipedia.org/wiki/Semaphore_(programming)

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