Apache: [emerg] (28)No space left on device: Couldn’t create accept lock
[notice] suEXEC mechanism enabled (wrapper: /usr/local/apache/bin/suexec)
[crit] (28)No space left on device: mod_rewrite: Parent could not create RewriteLock file /usr/local/apache/logs/rewrite_lock
semget: [emerg] (28) No space left on device OR Apache: No space left on device: Couldn’t create accept lock
You might check if disk space is full and can easily confirm that is not the reason for this error.
The reason behind the error message is Semaphores. You will have to kill the hung/stuck semaphore processes in order
To list the PIDs of the active semaphore processes, execute:
—— Semaphore Arrays ——– key
semid owner perms nsems
0×00000000 366673220 apache 600 1
0×00000000 366706589 apache 600 1
0×00000000 366732358 apache 600 1
0×00000000 366734353 apache 600 1
To kill those process, use the command :
ipcrm -s PID
Once those stuck/hung processes are cleared, restart your apache service.