nginx基本配置

worker_processes  2;
events {
    worker_connections  1024;
}
http {
    include       mime.types;
    default_type  application/octet-stream;
    #upstream配置被代理的服务器，localServer为自定义的服务器别名
    upstream localServer{
        server 127.0.0.1:9002;
    }
    server {
        listen       80;
        server_name  localhost;
        <!-- 以/api/开头的url都被此location拦截-->
        location ^~ /api/ {
            proxy_set_header Host $http_host;
            proxy_set_header X-Real-Ip $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forworded-For $http_x_forwarded_for;
            proxy_pass  http://localServer;
            #root   html;
            #index  index.html index.htm;
        }
        <!-- 默认访问到html目录下的静态资源-->
        location / {
            root   html;
            index  index.html index.htm;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}

如果不采用默认的轮询机制，nginx还提供了ip_hash策略和权重策略，配置风格如：

ip_hash负载均衡策略配置：
upstream lagouServer{
   ip_hash;
   server 127.0.0.1:8080;
   server 127.0.0.1:8082;
}
权重策略配置：
upstream lagouServer{
   server 127.0.0.1:8080 weight=1;
   server 127.0.0.1:8082 weight=2;
}