Linux|lnmp运行时间久了504 bad gateway

lnmp环境,一键安装,上面只跑了一个wordpress,压力也不大,每天几百个pv,但是基本五六天就会504,重启后又正常.
忍不住了,看了一下日志

大量php-fpm segfault错误

 kernel: [4383249.904122] php-fpm[29952]: segfault at 0 ip 00000000008213e0 sp 00007ffe2821e098 error 6 in php-fpm[400000+7b9000]

网上查问题,说有可能是php-fpm的backlog设置-1的问题

[global]
pid = /usr/local/php/var/run/php-fpm.pid
error_log = /usr/local/php/var/log/php-fpm.log
log_level = notice

[www]
listen = /tmp/php-cgi.sock
listen.backlog = -1
listen.allowed_clients = 127.0.0.1
listen.owner = www-data
listen.group = www-data
listen.mode = 0666
user = www-data
group = www-data
pm = dynamic
pm.max_children = 10
pm.start_servers = 2
pm.min_spare_servers = 1
pm.max_spare_servers = 6
request_terminate_timeout = 100
request_slowlog_timeout = 0
slowlog = var/log/slow.log

看了一下自己的配置,果断改成1024

listen.backlog = 1024

其实还有个参数可以添加

pm.max_requests = 200

一个php进程响应多少个请求自动退出,用来防止内存泄露问题


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