Nginx反向代理与负载均衡

两者只需要修改nginx/conf/nginx.conf即可

server {
        listen       81;
        server_name  localhost;

        location / {
	    proxy_pass https://www.csdn.net;
            #root   html;
            #index  index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

默认使用轮询策略

   upstream servers {
        server  192.168.93.101:80;
        server  192.168.93.102:80;
        server  192.168.93.103:80;
    }
    server {
        listen       83;
        server_name  localhost;

        location / {
            proxy_pass http://servers;
            #root   html;
            #index  index.html index.htm;
        }

        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
    }

添加权重：只需要在后面添加weight=n即可，数字越大权重越大

   upstream servers {
        server  192.168.93.101:80 weight=8;
        server  192.168.93.102:80 weight=4;
        server  192.168.93.103:80 weight=1;
    }

另外：down代表这个机器不能用了；backup代表这是个备用机，除非别的机器不能用，否则不会使用此机器

    upstream servers {
        server  192.168.93.101:80 down;
        server  192.168.93.102:80;
        server  192.168.93.103:80 backup;
    }

其他的负载均衡策略