Monitor PHP-FPM and Nginx - Script for low memory environments / Alix

[freebee]

Hi.

In Alix 2d3, which some days on, the pfsense get "bad gateway" message in browser. In console i get "swap out, kill pid" message.
So, i suggest a script to solve this. Works for me.

Install Cron package from webgui pfsense.

• First line is the file and above the content.

/usr/local/etc/php-fpm-test.sh

#!/bin/sh
SERVICE=php-fpm
if P=$(pgrep $SERVICE)
then
    #echo "$SERVICE is running, PID is $P"
exit
else
    /etc/rc.php-fpm_restart 
fi

/usr/local/etc/nginx-test.sh

#!/bin/sh
SERVICE=nginx
if P=$(pgrep $SERVICE)
then
    #echo "$SERVICE is running, PID is $P"
exit
else
    /etc/rc.restart_webgui
fi

OBS: If you want see if process is ok, just remove the # from echo line.
commands:
chmod 655 /usr/local/etc/php-fpm-test.sh
chmod 655 /usr/local/etc/nginx-test.sh
chmod +x /usr/local/etc/php-fpm-test.sh
chmod +x /usr/local/etc/nginx-test.sh

In Webgui -> Services -> Cron, insert:

*/1    *      *      *      *      root  /usr/local/etc/php-fpm-test.sh
*/1    *      *      *      *      root  /usr/local/etc/nginx-test.sh

Each minute, the cron will execute the script.
You can verify killing the php-fpm, nginx or both.

Service_watch not display this services and in very low memory environments, create many child process, what is not very interested (usually idle is in 0% in busy environment) and depends on php (witch depends of more and more memory).