php-fpm如何配置max_children参数

前言

略

php-fpm 资源耗尽

php-fpm 的子进程耗尽的时：

1. 会导致 502 出现
2. nginx 出现错误日志

2024/07/18 20:19:10 [crit] 36390#0: *1402471 connect() to unix:/tmp/php-cgi-81.sock failed (2: No such file or directory) while connecting to upstream, client: 192.168.0.162, server: xxx, request: ＂POST /api.html HTTP/1.1＂, upstream: ＂fastcgi://unix:/tmp/php-cgi-81.sock:＂, host: ＂xxx＂, referrer: ＂https://xxx/＂

如何解决

合理配置max_children参数。

宝塔推荐值：

• 8G内存时，pm.max_children = 120
• 16G内存时，pm.max_children = 200
• 32G内存时，pm.max_children = 300

使用宝塔设置

参考

https://blog.csdn.net/solmyr_biti/article/details/53955141
https://www.jb51.net/article/157900.htm
https://blog.csdn.net/weixin_33701251/article/details/92332376