Featured PHP-FPM How to configure PHP-FPM Status Monitoring with Nixstats & Nginx Amplify

This guide explains how to configure and setup PHP-FPM status monitoring with Nixstats and Nginx Amplify monitoring service. Centmin Mod installed PHP-FPM server has support for PHP-FPM status monitoring via 127.0.0.1/phpstatus within SSH but you need to enable it first before following the respective setup and configuration guides by Nixstats and Nginx Amplify.

PHP-FPM Status Metrics Setup

• PHP-FPM status is disabled by default so you need to enable it as per official instructions here.
• Nginx Amplify official PHP-FPM status monitoring instructions are located here and on official Githut repo here.
• Nixstats official PHP-FPM status monitoring instructions are located here. Only difference is the port used 80 vs 8080 and the location path to where PHP-FPM status is in Centmin Mod vs Nixstats documentation is /phpstatus vs /status_phpfpm
  example config at /etc/nixstats.ini
  
  Code (Text):

  ;[phpfpm]
  ;enabled = yes
  ;status_page_url = http://127.0.0.1:8080/status_phpfpm?json
  

  
  change to
  
  Code (Text):

  [phpfpm]
  enabled = yes
  status_page_url = http://127.0.0.1:80/phpstatus?json
  

  
  run test command
  
  Code (Text):

  nixstatsagent --test phpfpm

  
  output
  
  Code (Text):

  nixstatsagent --test phpfpm
  phpfpm:
  {
      "accepted_conn": 476, 
      "accepted_conn_per_second": 0.0, 
      "active_processes": 1, 
      "idle_processes": 15, 
      "listen_queue": 0, 
      "listen_queue_len": 511, 
      "max_active_processes": 36, 
      "max_children_reached": 0, 
      "max_listen_queue": 0, 
      "pool": "www", 
      "process_manager": "static", 
      "slow_requests": 0, 
      "start_since": 286949, 
      "start_time": 1554703827, 
      "total_processes": 16
  }
  

  
  then restart service
  
  Code (Text):

  service nixstatsagent restart

  
  check direct /phpstatus is working
  i.e.
  Code (Text):

  wget -qO- http://127.0.0.1:80/phpstatus?json 
  {"pool":"www","process manager":"ondemand","start time":1518976087,"start since":38,"accepted conn":1,"listen queue":0,"max listen queue":0,"listen queue len":511,"idle processes":0,"active processes":1,"total processes":1,"max active processes":1,"max children reached":0,"slow requests":0}
  

Once PHP-FPM status is enabled on Centmin Mod server, you can query it in SSH session via curl, wget or lynx. Examples:

Code (Text):

curl -s http://127.0.0.1/phpstatus
pool:                 www
process manager:      ondemand
start time:           18/Feb/2018:17:48:07 +0000
start since:          14028
accepted conn:        5036156
listen queue:         0
max listen queue:     29
listen queue len:     511
idle processes:       0
active processes:     1
total processes:      1
max active processes: 17
max children reached: 1
slow requests:        0

Code (Text):

lynx --dump  http://127.0.0.1/phpstatus
pool:                 www
process manager:      ondemand
start time:           18/Feb/2018:17:48:07 +0000
start since:          14066
accepted conn:        5036160
listen queue:         0
max listen queue:     29
listen queue len:     511
idle processes:       0
active processes:     1
total processes:      1
max active processes: 17
max children reached: 1
slow requests:        0

Then follow either Nginx Amplify official PHP-FPM status monitoring or Nixstats official PHP-FPM status monitoring configuration instructions paying attention to your correct /phpstatus path and correct port = 80 set in Nixstats config file at /etc/nixstats.ini.

Checking Nixstats PHP-FPM Monitoring Status

Then to check if Nixstats PHP-FPM monitoring is working as per documentation run the test PHP-FPM command.

Code (Text):

nixstatsagent --test phpfpm
phpfpm:
{
    "accepted_conn": 3,
    "accepted_conn_per_second": 0.0,
    "active_processes": 1,
    "idle_processes": 0,
    "listen_queue": 0,
    "listen_queue_len": 511,
    "max_active_processes": 1,
    "max_children_reached": 0,
    "max_listen_queue": 0,
    "pool": "www",
    "process_manager": "ondemand",
    "slow_requests": 0,
    "start_since": 821,
    "start_time": 1518976087,
    "total_processes": 1
}

---

Then once confirmed working, you need create a new custom dashboard and then assign and setup custom plugin metrics graphs for your PHP-FPM status metrics to that newly created custom dashboard.

Checking Nginx Amplify PHP-FPM Monitoring Status

Then to check if Nginx Amplify PHP-FPM monitoring just log into your Amplify dashboard and check out the php-fpm dashboard tab. The default PHP-FPM dashboard doesn't show all PHP-FPM status metrics.

So you need to create your own custom dashboards and add your own graphs to them.



Custom Nginx Amplify dashboard focusing on Nginx, PHP-FPM and system stats

 

Nginx Amplify Metric Alerts

Nginx Amplify monitoring service also supports setting on individual metric alerts which you can setup to email and notify you once a threshold is reached. I usually setup an email contact and a pushover email for mobile device notifications.

For example get notified when PHP-FPM max children goes over 0 in past 10 minutes.