kaishirenshi

所谓四层就是基于IP+端口的负载均衡,通过虚拟IP+端口接收请求,然后再分配到真实的服务器;

[root@linux-node1 conf]# vim nginx.conf 
worker_processes
1; events { worker_connections 1024; } #类似于7层的http段 upstream ssh_proxy { hash $remote_addr consistent; server 192.168.56.2:22; server 192.168.56.3:22; }
server { listen
2222; proxy_connect_timeout 1s; proxy_timeout 3s; proxy_pass ssh_proxy; }
}

 

七层通过虚拟的URL或主机名接收请求,然后再分配到真实的服务器七层就是基于URL等应用层信息的负载均衡。

七层负载:

[root@www ~]# cat /etc/nginx/conf.d/test.conf
upstream phpserver {
       server192.168.2.3;
       server192.168.2.4;
        }
upstream htmlserver {
       server192.168.2.1;
       server192.168.2.2;
       }
[root@www
~]# vim /etc/nginx/nginx.conf location / { root /usr/share/nginx/html; index index.html index.htm; if ($request_uri ~*\.html$){ proxy_pass http://htmlserver; } if ($request_uri~* \.php$){ proxy_pass http://phpserver; } }

 



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