nginx 负载均衡

负载的地址：

upstream test{
　　server 127.0.0.1:8081;
　　server 127.0.0.1:8082;
}

server {

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

负载均衡策略:

Nginx 提供轮询（round robin）、用户 IP 哈希（client IP）和指定权重 3 种方式。

upstream test{
    ip_hash;
    server backend1.example.com;
    server backend2.example.com;
    server.backend3.example.com;
} 

 upstream test{
    server blog.csdn.net/poechant down;
    server 145.223.156.89:8090;
    server unix:/tmp/backend3;
} 

upstream test {
    server backend1.example.com;
    server 123.321.123.321:456 weight=4;
}