Nginx、haproxy反向代理设置

Nginx反向代理配置：

#user  nobody;
worker_processes  ;

events {
    worker_connections  ;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;

upstream lingyu.com {
      server  192.168.1.102;
      server  192.168.1.104;
      #ip_hash;
}
    server {
        listen       ;
        server_name  localhost;

        location / {
             proxy_pass http://lingyu.com;
             proxy_set_header   Host             $host;
             proxy_set_header   X-Real-IP        $remote_addr;
             proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
             proxy_set_header   Cookie $http_cookie;
        }
    }
}

haproxy反向代理设置：

global
     daemon
     maxconn
 defaults
     mode http
     timeout connect 5000ms
     timeout client 50000ms
     timeout server 50000ms
 frontend http-in
     bind *:
     default_backend servers
 backend servers
     balance     roundrobin #负载均衡模式轮询
     server server1 192.168.1.102: cookie A check
     server server2 192.168.1.104: cookie B check

写入Cookies时带上Domain就可以互相识别。

补充：

由于服务器资源缺乏，案例如下：

2套系统和若干个服务，要做负载均衡，只能将2套系统在2个服务器上都部署一份，一个用80端口，一个用81端口，不对外开放

第三个服务器做分流，同时再承担一些其他的外网服务角色。

设计如：

网站，用80端口，baidu.com

后台用81端口，home.baidu.com

将上述2个域名同时指到第三个公开的服务器，用nginx根据端口分流。

配置如：

worker_processes  1;
events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;

upstream baidu.com {
      server  192.168.1.150;
      server  192.168.1.151;
      #ip_hash;
} 

upstream home.baidu.com {
      server  192.168.1.150:81;
      server  192.168.1.151:81;
      #ip_hash;
} 

    server {
        listen       80;
        server_name  baidu.com;
          location / {
			 proxy_pass http://baidu.com;
             proxy_set_header   Host             $host;
             proxy_set_header   X-Real-IP        $remote_addr;
             proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
			 proxy_set_header   Cookie $http_cookie;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

	server {
        listen       80;
        server_name  home.baidu.com;
        location / {
			 proxy_pass http://home.baidu.com;
             proxy_set_header   Host             $host;
             proxy_set_header    X-Real-IP        $remote_addr;
             proxy_set_header   X-Forwarded-For  $proxy_add_x_forwarded_for;
			 proxy_set_header   Cookie $http_cookie;
        }
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }
}