查看服务器日志

查看php-fpm.log  
查nginx日志

查看单个进程打开的最大连接数

ulimit -n
ulimit -a

查看当前tcp连接状况  

netstat -an|awk '/^tcp/{++S[$NF]}END{for (a in S)print a,S[a]}'

vim /etc/nginx/nginx.conf

#修改前 
worker_connections 1024;
#修改后
worker_connections 51200;

http { 下添加3行

http {
fastcgi_connect_timeout 300;
fastcgi_send_timeout 300;
fastcgi_read_timeout 300;

server { 添加

#添加这3行
fastcgi_buffer_size 64k;
fastcgi_buffers 32 32k;
fastcgi_busy_buffers_size 128k;
#添加这3行
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;

重启nginx

nginx -s reload

vim /etc/php-fpm.d/www.conf

服务器配置：2核8G

;修改前
pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 35
;request_terminate_timeout = 0
;修改后
pm = dynamic
pm.max_children = 50
pm.start_servers = 5
pm.min_spare_servers = 5
pm.max_spare_servers = 100
request_terminate_timeout = 1200

vim /etc/php.ini 

;修改前
max_execution_time = 5
;修改后
max_execution_time = 300

重启fpm

查出服务的进程id

ps aux |grep php-fpm
kill -9 进程id
systemctl start php-fpm