进程数不够，引发日志报警----PHP-FPM日志告警"seem busy"

PHP-FPM日志中出现“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 6 total children”

首先分析验证问题：

1.报警级别“WARNING”，也就是说业务受到的影响比较小，实际验证也是这样；

2.php-fpm的进程数比较少，建议增加 pm.start_servers, or pm.min/max_spare_servers

3.增加到多少呢？spawning 8，也就是说至少得8个进程；

解决问题：

1.执行ps -ef |grep php

可以得到当前的php-fpm进程数以及php-fpm.conf配置文件位置

2.修改php-fpm.conf文件

php-fpm/www.conf:

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pm = dynamic

pm.max_children = 32768

pm.start_servers = 10

pm.min_spare_servers = 10

pm.max_spare_servers = 10

pm.max_requests = 5000

保存退出后重启php-fpm

#/etc/init.d/php-fpm reload