Tutoriel N° 2e5
Alert by mail if your load server cpu high
This script need a web server with php
1/ Create the shell script to execute with cron
nano send_alert.sh
#!/bin/sh
load=$(cat /proc/loadavg | awk '{print $1}');
echo $load;
if [ "`echo "${load} > 2.0" | bc`" -eq 1 ]; then
echo "load > 2"
# use your php path (maybe /usr/bin/php7.2)
# use the command [whereis php] to find your php path
/usr/bin/phpX.Y -q mail.php;
else
echo "load < 2"
fi
load=$(cat /proc/loadavg | awk '{print $1}');
echo $load;
if [ "`echo "${load} > 2.0" | bc`" -eq 1 ]; then
echo "load > 2"
# use your php path (maybe /usr/bin/php7.2)
# use the command [whereis php] to find your php path
/usr/bin/phpX.Y -q mail.php;
else
echo "load < 2"
fi
2/ Add in Cron daemon your shell script to execute all the 10 minutes
crontab -e
*/10 * * * * /bin/bash /root/send_alert.sh
mail.php
<?php
#send you an email with $load[0] variable
#the php variable $load[0] contains the value of your cpu load
$load = sys_getloadavg();
echo $load[0];
?>
