# 负载均衡
upstream myserver {
 server 127.0.0.1:8080;
 server 127.0.0.1:8082;
}

server {
 listen  9000;
 server_name localhost;

 location / {
  root html;
  index index.html index.htm;
  # 对应上述upstream所配置的名称
  proxy_pass http://myserver;
  
  ### 下面都是次要关注项
  proxy_set_header Host $host;
  proxy_method POST;

   # 指定不转发的头部字段
  proxy_hide_header Cache-Control;

   # 指定转发的头部字段
  proxy_pass_header Server-IP;

   # 是否转发包体
  proxy_pass_request_body on | off;

   # 是否转发头部
  proxy_pass_request_headers on | off;

   # 显形/隐形 URI，上游发生重定向时，Nginx 是否同步更改 uri
  proxy_redirect on | off;
 }
}

# 负载均衡
upstream myserver {
 server 127.0.0.1:8080 weight=1;
 server 127.0.0.1:8082 weight=2;
}

# 负载均衡
upstream myserver {
  ip_hash;
 server 127.0.0.1:8080;
 server 127.0.0.1:8082;
}