nginx + php-fpm high concurrency configuration (also includes part of apache/httpd)

The php.ini used by fpm (/etc/php5/fpm/php.ini) is very important. If it is not changed, there will be security holes.

cgi.fix_pathinfo=0

Remove anti-syn flood attack (under high concurrency, apache requests will be actively blocked, resulting in apr_socket_recv: Connection reset by peer (104) under ab test)

Reference: http://xmarker.blog.163.com/blog/static/226484057201462263815783/

##vi /etc/sysctl.conf

net.ipv4.tcp_syncookies=0

Look at the ulimit number

ulimit -Sn

Add ulimit to 30000

How to modify Baidu, different Linux distributions seem to be different

nginx Modifying the sock mode of

worker_processes 12;
worker_rlimit_nofile 100000;
events { 
  use epoll; 
  worker_connections 65535; 
}

php-fpm under .conf is unreliable and will crash when the concurrency is high.

php-fpm.conf (or www.conf)

Change to listen = 127.0.0.1:9000, do not use listen = /var/run/php5-fpm.sock

process.max = 65536 (This seems useless)

PM the next 4, change it to a larger size, and calculate it according to a process occupying 30M memory.

pm.max_requests = 50000 (This seems to be useless)

Select under nginx web server configuration

fastcgi_pass 127.0.0.1:9000;