nginx与php-fpm服务器配置，实现高并发

说明：高性能服务器通过配置nginx和php-fpm，代替docker容器技术，实现请求服务高并发处理。

主要说明配置主要参数，以及想过解释。

nginx主要配置

通过nginx实现php-fpm服务器负载，用户访问服务时，将请求分配给不同的php-fpm服务器。

# nginx启动worker进程数
worker_processes auto;

#Changes the limit on the maximum number of open files (RLIMIT_NOFILE) for worker processes.定义进程可以打开的最大文件数，与linux内核相同即可
worker_rlimit_nofile 65535;
# 定义worker进程的优先级，数字越小优先级越高 [-20,19]
worker_priority -20;

events{
    # The maximum number of connections that each worker process can handle simultaneously.每个进程同时处理的连接数
    worker_connections 10240;
    # If multi_accept is disabled, a worker process will accept one new connection at a time. Otherwise, a worker process will accept all new connections at a time.
    multi_accept on;
}

http{
    access_log /var/log/nginx/access.log main buffer=32k;
    
    # Nginx将使用sendfile内核来调用处理文件传递。
    sendfile on;
    
    # 根据权重分配请求到不同服务器，以下配置，当有6个请求时，5个发送到9000端口服务器，1个发送到9001端口服务器
    upstream phpload{
        server 127.0.0.1:9000 weight=6;
        server 127.0.0.1:9001 weight=1;
    }
    
    server{
        listen 443;
        
        root /data/www/webserver;
        index index.php;
        
        location / {
            if (!-e $request_filename) {
                rewrite  ^(.*)$  /index.php?s=$1  last;
                break;
            }
        }
        
        location ~ .php($|/){
            set $script $uri;
            set $path_info "";

            if ($uri ~ "^(.+.php)(/.+)") {
                set $script $1;
                set $path_info $2;
            }

            fastcgi_param SCRIPT_FILENAME $document_root$script;
            fastcgi_param SCRIPT_NAME $script;
            fastcgi_param PATH_INFO $path_info;

            try_files $uri =404;
            
            # 使用负载，分发请求到上游php服务器
            fastcgi_pass  myfastcgi;
            fastcgi_index index.php;
            include       fastcgi_params;
        }
    }
}

php-fpm主要配置

• pm为dynamic配置时，php-fpm最大启动100子线程时，根据测试结果性能最好。
• max_requests 设置获取请求数量尽可能大

; php服务器监听端口号
listen = 127.0.0.1:9001

pm = dynamic
pm.max_children = 100
pm.start_servers = 2
pm.min_spare_servers = 2
pm.max_spare_servers = 40
; php-fpm工作进程处理完多少请求后自动重启
pm.max_requests = 10240

php-fpm实例启动

php-fpm启动实例，设置不同的配置文件，每个配置文件监听不同端口号

php-fpm -y /etc/php-fpm.d/9001.conf

php-fpm -h 查看帮助，获取更多命令使用方式

php-fpm操作命令

PID为php-fpm实例master进程号

重新加载实例配置

kill -USR2 [PID]

从容停止php-fpm

kill -QUIT [PID]

测试

配置：4核CPU8G内存20M带宽，开启3个php-fpm，每个php-fpm最大启动150子线程，nginx启动4个worker，php版本5.4

ab -c 200 -n 10000 https://tongkuaikeji.com/

结果

CPU使用率100%，内存使用率20%，带宽峰值11M，内存使用率和带宽峰值与后台服务运行数据和传输数据相关，仅供参考

This is ApacheBench, Version 2.3 <$Revision: 1430300 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking tongkuaikeji.com (be patient)

Completed 10000 requests
Finished 10000 requests


Server Software:        nginx/1.14.2
Server Hostname:        tongkuaikeji.com
Server Port:            443
SSL/TLS Protocol:       TLSv1.2,ECDHE-RSA-AES128-GCM-SHA256,2048,128

Document Path:          /
Document Length:        1662 bytes

Concurrency Level:      200
Time taken for tests:   56.434 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Total transferred:      20050000 bytes
HTML transferred:       16620000 bytes
Requests per second:    177.20 [#/sec] (mean)
Time per request:       1128.685 [ms] (mean)
Time per request:       5.643 [ms] (mean, across all concurrent requests)
Transfer rate:          346.95 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:       81  246 445.6    112    8881
Processing:   403  849 269.5    837    2120
Waiting:      403  848 269.0    835    2120
Total:        493 1095 452.8   1029    9311

Percentage of the requests served within a certain time (ms)
  50%   1029
  66%   1135
  75%   1214
  80%   1283
  90%   1551
  95%   1725
  98%   2127
  99%   2598
 100%   9311 (longest request)