PHP-FPM をもっと理解しよう

PHPアプリケーションが動いているサーバーがメモリ不足でアラートがあがる。どうやらphp-fpmがメモリを消費しているようだ。その時は付け焼き刃でphp-fpmの設定値を調整して対応したが、改めてちゃんと理解したいと思った。 そんな私とあなたに向けた内容（注：知識を整理したい方向けの予定です）

Transcript

1. PHP-FPM 
   2018 12 15 @PHP Conference 2018  Zaim naoki85
2. naoki85 •  Zaim: 2017 10 • 
    naoki85_201612 PHP Ruby 
3. 800    
     
4. 
   Zaim     https://blog.zaim.co.jp
5. 
   
6. Zaim 
   Zabbix  Slack    Slack   
7. 
   …  
   
8. 
     PHP-FPM     FPM
   
9.  &"! $#'
      PHP 7  $#    %
10.    
      … 
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11. PHP   
    WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 42 total children 
    
12.  
    PHP-FPM    
13. 
     http://php.net/manual/ja/install.fpm.php
14.  % https://qiita.com/kotarella1110/items/634f6fafeb33ae0f51dc
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15. CGI _Common Gateway Interface` "#)&/(*-%,+IW03
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17. Web%%2Apache
    Nginx3 ❖Apache ❖Nginx l !"%#+  PHP,1 - */  l Web%%)& $ PHP' 2CGI ,1(.3 l CGI  PHP $0' 
18. ࣮ࡍʹࢼͤͳ͍ͩΖ͏͔ɻɻ!
19. ϩʔΧϧͰ/HJOY
    
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    Ͱ؂ࢹ͢Δαϯϓϧ https://github.com/naoki85/monitor_php_with_zabbix
20. • docker • Zabbix Alpine Linux 
      • Nginx • PHP-FPM ϩʔΧϧͰ/HJOY
    
    1)1'1.
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    Ͱ؂ࢹ͢Δαϯϓϧ
21. 
    
22. ςετʹ͸ "QBDIF
    #FODI
    Λ࢖༻ https://httpd.apache.org/docs/2.4/programs/ab.html ex) ab -n 1000 -c 10 http://127.0.0.1/
23. ϩάͳͲͷઃఆ
24. FPM
     status_path pm.status_path = /fpm-status ex) http://localhost/fpm-status
25. 
     ex) access.log = /var/log/php7/$pool.access.log   ex) php_admin_value[error_log] = /var/log/php7/$pool.error.log php_admin_flag[log_errors] = on   ex) slowlog = /var/log/php7/$pool.slow.log request_slowlog_timeout = 10s php_admin_value[error_l
26. 
     ❖static ❖dynamic ❖ondemand
27. static ❖  ❖pm.max_children 
     max_children 5 
28. static active process idle process 5 1 4 0
29. static ❖Active process  Idle process  max_children  
     
30. dynamic ❖
      ❖pm.max_children:  ❖pm.start_servers:   ❖pm.min_spare_servers:   ❖pm.max_spare_servers:  
31. dynamic  
    ❖pm.max_children: 5 ❖pm.start_servers: 2 ❖pm.min_spare_servers: 1 ❖pm.max_spare_servers: 3
32. dynamic active process idle process 5 1 2 0
33. dynamic total process Available Memory 5 2
34. dynamic ❖   max_children  ❖Active process 
      Idle process 
35. ondemand ❖$'% " ❖pm.max_children: & ❖pm.process_idle_timeout: !( )%+ ❖ pm.start_servers #  *
    
36. ondemand active process idle process 5 1
37. ondemand ❖ 
    " !  ❖#
    ❖%  $&
38. dynamic  
    
39. dynamic WARNING: [pool www] server reached pm.max_children setting (5), consider raising it max_children   
    max_children 100 
    
40. dynamic WARNING: [pool www] seems busy (you may need to increase pm.start_servers, or pm.min/max_spare_servers), spawning 8 children, there are 0 idle, and 5 total children ❖ 8
    ❖ 
    0 ❖ active 
    5
41. dynamic ALERT: [pool www] pm.start_servers(10) must not be less than pm.min_spare_servers(1) and not greater than pm.max_spare_servers(3) ❖start_servers min_spare_servers  ❖start_servers max_spare_servers  min_spare_servers  max_spare_servers    
    
42. dynamic ❖start_servers: 10 ❖min_spare_servers: 10 ❖max_spare_servers: 50 warning 
     total process
43. dynamic accepted connection idle process
44. dynamic ❖  
    => spare_servers   ❖    
    Available memory
45. 
     <p>The current time is <?= date('H:i:s', time()); ?>.</p>  Chrome  Page Load Time  
46.   ❖  
      ➢0.86 s ❖    ➢1.18 s
47.   ❖ $ (  $+& 
    ➢$ ➢"%$ ➢$%$ ❖ %% !# * ,'
    ➢static ➢dynamic ➢ondemand ❖ )- 
    
48. Ruby / PHP