Monitoring nginx and app servers

Monitoring nginX

The server is already configured on localhost to send the nginx status at nginx_status URL

lynx http://localhost/nginx_status

on the server cli will show the status . Local checks (for example the check_mk nginx status module) should just report the details fine to remote monitoring servers.

Monit configuration for nginx Below example is for init .For systemd replace “/etc/init.d/nginx start/stop” with “/usr/bin/systemctl start/stop nginx.service”

check process nginx with pidfile /var/run/nginx.pid
start program = "/etc/init.d/nginx start"
stop program  = "/etc/init.d/nginx stop"

Monitoring php-fpm

php-fpm can be configured to provide detailed status info per pool. But since this has its own data confidentiality risks this is not enabled by default on the php-fpm pool config file. But all php-based templated include a location block to give a ping signal to php-fpm and the fpm pool is setup to respond with a pong

http://domain.com/pingphpfpm

will return with a pong output if php-fpm pool is working fine .

This can be easily configured for status checking

Monit configuration useful to restart php-fpm in case of issues Below example is for systemd .For init replace “/usr/bin/systemctl start/stop ndeploy_backends.service” with “/etc/init.d/ndeploy_backends start/stop”

check host mydomain.com with address mydomain.com
start program = "/usr/bin/systemctl start ndeploy_backends.service"
stop program = "/usr/bin/systemctl stop ndeploy_backends.service"
  if failed url https:/mydomain.com/pingphpfpm
      and content = "pong"
      with timeout 60 seconds
  then restart