No space left on device: AH00023: Couldn't create the proxy mutex

Apache tiba tiba down dan sering terjadi dengan menampilkan pesan :

[Sat Apr 29 14:48:25.334267 2017] [core:emerg] [pid 93298:tid 140132036216800] (28)No space left on device: AH00023: Couldn't create the proxy mutex
[Sat Apr 29 14:48:25.334281 2017] [proxy:crit] [pid 93298:tid 140132036216800] (28)No space left on device: AH02478: failed to create proxy mutex
AH00016: Configuration Failed


Cara mengatasi :

# ipcs -s

bila menampilkan semaphore artinya apache masih belum bersih dan dapat dibersihakan memberikan perintah berikut:

ipcs | grep nobody | awk '{print $2}' > sem.txt for i in `cat sem.txt`; do { ipcrm -s $i; }; done;
atau

# for i in `ipcs -s | awk '/httpd/ {print $2}'`; do (ipcrm -s $i); done

kemudian tambahkan baris perintah dibawah di /etc/sysctl.conf

kernel.msgmni = 1024 kernel.sem = 250 256000 32 1024

bila apache masih belum bisa aktip ganti dengan :

kernel.sem = 500 64000 64 1024

tarakhir aktipkan dengan perintah:

# sysctl -p



CARA LAIN:

bikin file misalnya ipcs_check

#!/bin/sh

# vi ipcs_check

# ln -s ipcs_check  /etc/cron.hourly/

EMAIL=info@plasahosting.com

MAX_SEMAPHORES=15

USER_APACHE=nobody

IPCS=/usr/bin/ipcs

IPCRM=/usr/bin/ipcrm

MAIL=/bin/mail

COUNT=`${IPCS} | grep $USER_APACHE | wc -l`

if [ "$COUNT" -le $MAX_SEMAPHORES ]; then

       #all is well, there are no semaphore build-ups.

       exit 0;

fi

#we have more than MAX_SEMAPHORES, so clear them out and restart Apache.

LIST=/root/sem.txt

${IPCS} | grep $USER_APACHE | awk '{print $2}' > ${LIST}

for i in `cat ${LIST}`; do

{

       ${IPCRM} -s $i;

};

done;

/etc/init.d/httpd restart

TXT="${COUNT} semaphores cleared for apache for `hostname`"

echo "${TXT}" | ${MAIL} -s "${TXT}" ${EMAIL}

exit 1;

berikan mode 755

chmod 755 ipcs_check

aktipkan ke cron hours

ln -s ipcs_check /etc/cron.hourly/