1、php-fpm 配置文件里 rlimit_files的值 要與系統的打開連接數一致

1）查看系統文件打開連接數

[root@iZ94eveq0q4Z ~]# ulimit -n
65535

2）查看一下php-fpm 配置文件里 rlimit_files的值

; Set open file descriptor rlimit#rlimit設置打開的文件描述符
; Default Value: system defined value
rlimit_files = 65535
如果兩個值不一樣，則要設置為一樣

方法如下：

3）設置系統打開文件連接數

[root@hotdata ~]# ulimit -HSn 65535
[root@hotdata ~]# ulimit -n
65535
[root@hotdata ~]#

設置好后重啟php-fpm服務

2、 request_terminate_timeout = 0 設置為0

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the ‘max_execution_time' ini option
; does not stop script execution for some reason. A value of '0′ means ‘off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
request_terminate_timeout = 0

因為這個參數會直接殺掉php進程，然后重啟php進程，這樣前端nginx就會返回104: Connection reset by peer。這個過程是很慢，總體感覺就是網站很卡

nginx可能出現502
recv() failed (104: Connection reset by peer) while reading response header from upstream

3、request_slowlog_timeout這個配置不要開啟

之前服務器上開始了這個參數，并且設置如下：

request_slowlog_timeout = 10導致圖片處理每次都失敗，每次都是502錯誤。

錯誤信息如下：

Nginx的錯誤信息：
2015/12/28 16:20:23 [error] 649#0: *9862 recv() failed (104: Connection reset by peer) while reading response header from upstream, client: 163.177.69.13,

php-fpm的錯誤信息為：

[28-Dec-2015 17:04:01] WARNING: [pool www] child 10520, script '/hotdata/kehu/foshang_niufeecms/index.php' (request: "GET /index.php") execution timed out (10.451550 sec), terminating
[28-Dec-2015 17:04:01] WARNING: [pool www] child 10512, script '/hotdata/kehu/foshang_niufeecms/index.php' (request: "GET /index.php") execution timed out (12.396650 sec), terminating
[28-Dec-2015 17:04:01] WARNING: [pool www] child 10520 exited on signal 15 (SIGTERM) after 73.413706 seconds from start
[28-Dec-2015 17:04:01] NOTICE: [pool www] child 10909 started
[28-Dec-2015 17:04:01] WARNING: [pool www] child 10512 exited on signal 15 (SIGTERM) after 73.421170 seconds from start
[28-Dec-2015 17:04:01] NOTICE: [pool www] child 10910 started/var/log/php-fpm/www-slow.log記錄如下

[28-Dec-2015 16:23:17]  [pool www] pid 2427
script_filename = /hotdata/kehu/foshang_niufeecms/index.php
[0x00007f94070ff668] file_get_contents() /hotdata/kehu/foshang_niufeecms/index/Lib/Action/MemberAction.class.php:516
[0x00007f94070ff140] makecar() /hotdata/kehu/foshang_niufeecms/index/Lib/Action/MemberAction.class.php:623
[0x00007fff6b5bd870] ajaxMakeCart() unknown:0
[0x00007f94070fde48] invoke() /hotdata/kehu/foshang_niufeecms/core/Lib/Core/App.class.php:171
[0x00007f94070fdc70] exec() /hotdata/kehu/foshang_niufeecms/core/Lib/Core/App.class.php:207
[0x00007f94070fda98] run() /hotdata/kehu/foshang_niufeecms/core/Lib/Core/Think.class.php:39
[0x00007f94070fc610] start() /hotdata/kehu/foshang_niufeecms/core/Common/runtime.php:242
[0x00007f94070fbef8] +++ dump failed

所以最好是要這個設置給屏蔽掉。
;request_slowlog_timeout = 10

以上這篇/etc/php-fpm.d/www.conf 配置注意事項就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持VeVb武林網。