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  • php-fpm: 某项目网站频繁出现503问题解决( WARNING: [pool www] server reached pm.max_children setting (50), consider raising it)

    服务是nginx+php-fpm配置,

    在运行过一段时间后,会经常出现:

    WARNING: [pool www] server reached pm.max_children setting (50), consider raising it
    子进程达到最大数量,需要提供子进程数
    

      

    503/502一般是因为服务器维护或者过载,近期服务器并未进行维护,查询监控记录发现负载也不是很高,猜测是不是服务器对项目的某些配置产生了限制,查看nginx,php日志发现:

    找到php-fpm.conf 文件 ,查找php日志错误

    [15-Nov-2017 15:23:51] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
    [15-Nov-2017 17:10:53] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
    [15-Nov-2017 17:12:56] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
    [15-Nov-2017 18:29:28] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
    [16-Nov-2017 10:25:17] WARNING: [pool www] server reached pm.max_children setting (5), consider raising it
    

      


    该警告频繁出现,子进程达到最大数量,查询php-fpm配置文件www.conf,发现pm.max_children采用的是默认配置,显然是因为设定值过小导致

    问题解决:

    修改

    pm.start_servers = 10   //php-fpm启动起始进程数
    pm.min_spare_servers = 10   //php-fpm的最小空闲进程数
    pm.max_spare_servers = 24   //php-fpm的最大空闲进程数
    pm.max_requests = 500   //所有子进程重启时间
    

      

    参考:https://lirongyao.com/server-reached-pm-max_children-setting.html

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  • 原文地址:https://www.cnblogs.com/achengmu/p/9054911.html
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