用代码0退出的nginx php-fpm子程序

Question

有谁在php 7与11.0版本p8有类似的问题，或者知道如何调试它？

情况在几分钟后开始，只向客户显示半页。任何页面都会显示出大约62 up的以��������� 4.结尾的内容

的日志文件：

[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80582 exited with code 0 after 0.005648 seconds from start
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80584 started
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80583 exited with code 0 after 0.005877 seconds from start
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80585 started
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80581 exited with code 0 after 0.007763 seconds from start
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80586 started
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80585 exited with code 0 after 0.005653 seconds from start
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80587 started
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80586 exited with code 0 after 0.005820 seconds from start
[18-Mar-2017 15:41:49] NOTICE: [pool www] child 80588 started

PHP配置：

$php -v
PHP 7.0.17 (cli) (built: Mar 17 2017 02:07:44) ( NTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2017 Zend Technologies
    with Zend OPcache v7.0.17, Copyright (c) 1999-2017, by Zend Technologies

PHP-FPM.conf

pm = dynamic
pm.max_children = 25
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 3
pm.max_requests = 0 ;changing to 500

Answer 1

当在代码中使用exec函数时，它是php错误。好的做法是阻止他们，这样他们就不会产生这样的问题。

https://bugs.php.net/bug.php?id=73342

臭虫已经开放了4年了。

Answer 2

首先，这是预期的行为。这些消息被标记为“通知”，这是php-fpm.conf中的默认值：

; Log level
; Possible Values: alert, error, warning, notice, debug
; Default Value: notice
;log_level = notice

当您的php配置文件中定义了pm.max_requests选项时，进程就会退出和恢复。

例如：

; The number of requests each child process should execute before respawning.
; This can be useful to work around memory leaks in 3rd party libraries. For
; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
; Default Value: 0
pm.max_requests = 500

如果在本例中将其定义为500，则php在处理完500个请求后回收该流程。实际上，您可以忽略这些消息，因为它们是无害的，只是信息性的。

如果不希望记录这些消息，只需将日志级别更改为高于notice的级别，如warning。