负载均衡

http://nginx.org/en/docs/http/load_balancing.html

轮询 （不写 directive ）

    upstream myapp1 {
        server srv1.example.com;
        server srv2.example.com;
        server srv3.example.com;
    }

最小活跃连接数

    upstream myapp1 {
        least_conn;
        server srv1.example.com;
        server srv2.example.com;
        server srv3.example.com;
    }

哈希

upstream myapp1 {
    ip_hash;
    server srv1.example.com;
    server srv2.example.com;
    server srv3.example.com;
}

反向代理

http://nginx.org/en/docs/http/ngx_http_proxy_module.html#proxy_pass

单个

location /name/ {
    proxy_pass http://127.0.0.1/remote/;
}

群组

http {
    upstream myapp1 {
        server srv1.example.com;
        server srv2.example.com;
        server srv3.example.com;
    }

    server {
        listen 80;

        location / {
            proxy_pass http://myapp1;
        }
    }
}