Whenever you start Apache, it keeps crashing with error “semget: No space left on device”.

Apacha error_log shows:

# tail /etc/httpd/logs/error_log
semget: No space left on device
semget: No space left on device
[Wed Sep 12 10:54:27 2007] [warn] pid file /usr/local/apache/logs/httpd.pid overwritten
-- Unclean shutdown of previous Apache run? semget: No space left on device
[Wed Sep 12 10:56:27 2007] [warn] pid file /usr/local/apache/logs/httpd.pid overwritten
-- Unclean shutdown of previous Apache run? semget: No space left on device
[Wed Sep 12 10:58:27 2007] [warn] pid file /usr/local/apache/logs/httpd.pid overwritten
-- Unclean shutdown of previous Apache run? semget: No space left on device
[Wed Sep 12 11:00:27 2007] [warn] pid file /usr/local/apache/logs/httpd.pid overwritten
-- Unclean shutdown of previous Apache run? semget: No space left on device

If you have similar problem as mine above [b]+[/b] if your disk space is nowhere near/above 100% [b]+[/b] /var/messages and /usr/local/apache/logs/error_log shows no clue about this problem [b]+[/b] any files in /etc/httpd/logs/ and /etc/httpd/domlogs nowhere near/above 2GB in size, its most probably semaphore problem. Use the following script to cure your Apache.

#!/bin/bash

/scripts/restartsrv httpd

Script how to:
– SSH as root to your CPanel server
– Go to root dir
# cd /root
– Create a httpdsemclean.sh blank file
# pico httpdsemclean.sh
– Write above script
– Save
Ctrl + O
– Exit pico
Ctrl + X
– Chmod httpdsemclean.sh to 777
# chmod 777 httpdsemclean.sh
– Execute the script
./httpdsemclean.sh

If all goes fine, you’ll see something like this:
...
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
resource(s) deleted
Waiting for httpd to restart..............finished.

httpd started ok

PS: Do this at your own risk, we do not guarantee this will work on all CPanel servers!