Sometimes, php-fpm service is error, how to monitor for php-fpm service ?
Step 1: create a file like check.php with a simple content like
<?php echo "1";
and upoad this file to document root (like: /home/vpssim.demo/public_html), you will have the link: http://localhost/check.php
Step 2: add a cron job:
* * * * * /usr/bin/curl --head -sf http://localhost/check.php -o /dev/null || /usr/sbin/service php-fpm restart
You can use the command line
crontab -e
Then type: i
Then type:
* * * * * /usr/bin/curl --head -sf http://localhost/check.php -o /dev/null || /usr/sbin/service php-fpm restart
Escape
Then type: :w
Then type: :q
Done! now when php-fpm is error, this service will be restarted
To see list of cron jobs, you can use command
crontab -l
Method 2: (better than the first) you can use this command line:
[root@tutorialspots ~]# /usr/bin/wget --timeout 4 --tries 1 http://localhost/cron.php -O /dev/null || (/usr/sbin/service php-fpm stop && /usr/sbin/service php-fpm start)
Result:
[root@tutorialspots ~]# /usr/bin/wget --timeout 4 --tries 1 http://localhost/cron.php -O /dev/nu ll || (/usr/sbin/service php-fpm stop && /usr/sbin/service php-fpm start) --2018-01-30 10:48:42-- http://localhost/cron.php Resolving localhost (localhost)... ::1, 127.0.0.1 Connecting to localhost (localhost)|::1|:80... failed: Connection refused. Connecting to localhost (localhost)|127.0.0.1|:80... connected. HTTP request sent, awaiting response... Read error (Connection timed out) in hea ders. Giving up. Redirecting to /bin/systemctl stop php-fpm.service Redirecting to /bin/systemctl start php-fpm.service
