nginx负载均衡配置

一：简介

Tomcat在高并发环境下处理动态请求时性能很低，而在处理静态页面更加脆弱。虽然Tomcat的最新版本支持epoll，但是通过Nginx来处理静态页面要比通过Tomcat处理在性能方面好很多。

二：下载安装(以windows环境为例)

1、下载地址
下载地址：点击这里

2、目录结构

<code>  Nginx-
           |_  conf   配置目录
           |_  contrib
           |_  docs 文档目录
           |_  logs  日志目录
           |_  temp 临时文件目录
           |_  html 静态页面目录
           |_  nginx.exe 主程序
</code>

三：启动和停止nginx服务

cmd进入nginx解压缩目录

执行start nginx，就可以启动服务(或者nginx或者nginx.exe)
建议使用第一种，
其他二种会使你的cmd窗口一直处于执行中，不能进行其他命令操作

执行nginx -s stop可以停止nginx服务

执行nginx -t 可以检查nginx配置文件是否正确。

四：nginx主配置文件nginx.conf

所有配置文件下载，请点击这里

<code><span>#Nginx所用用户和组</span><span>#user  niumd niumd;</span><span>#工作的子进程数量（通常等于CPU数量或者2倍于CPU）</span>
worker_processes  <span>2</span>;

<span>#错误日志存放路径</span><span>#error_log  logs/error.log;</span><span>#error_log  logs/error.log  notice;</span>
error_log  logs/error.log  info;

<span>#指定pid存放文件</span>
pid        logs/nginx.pid;

events {
        <span>#使用网络IO模型linux建议epoll，FreeBSD建议采用kqueue</span><span>#use epoll;</span><span>#允许最大连接数</span>
    worker_connections  <span>2048</span>;
}

http {
    <span>include</span>       mime.types;
    default_type  application/octet-stream;

        <span>#定义日志格式</span><span>#log_format  main  '$remote_addr - $remote_user [$time_local] $request '</span><span>#                  '"$status" $body_bytes_sent "$http_referer" '</span><span>#                  '"$http_user_agent" "$http_x_forwarded_for"';</span><span>#access_log  off;</span>
    access_log  logs/access.log;

    client_header_timeout  <span>3</span>m;
    client_body_timeout    <span>3</span>m;
    send_timeout           <span>3</span>m;

    client_header_buffer_size    <span>1</span>k;
    large_client_header_buffers  <span>4</span><span>4</span>k;

    sendfile        <span>on</span>;
    tcp_nopush      <span>on</span>;
    tcp_nodelay     <span>on</span>;

    <span>#keepalive_timeout  75 20;</span><span>include</span>    gzip.conf;
    upstream localhost {

      server localhost:<span>8080</span> weight=<span>5</span>;
      server localhost:<span>9091</span> weight=<span>1</span>;
     }

    server {
            listen       <span>80</span>;
            server_name  localhost;   

            location / {
                    proxy_connect_timeout   <span>3</span>;
                    proxy_send_timeout      <span>30</span>;
                    proxy_read_timeout      <span>30</span>;
                proxy_pass http://localhost;
            }

   }
}

</code>

五： 负载均衡权重配置

<code>    upstream localhost {
      <span>server</span> localhost:<span>8080</span> weight=<span>5</span>;
      <span>server</span> localhost:<span>9091</span> weight=<span>1</span>;
     }</code>

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以上就介绍了nginx负载均衡配置，包括了方面的内容，希望对PHP教程有兴趣的朋友有所帮助。