一、限制單個 IP 的並發連接數

[[email protected] ~]# cat /usr/local/nginx/conf/nginx.conf
....
http {
    include       mime.types;
    default_type  application/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    limit_conn_zone $binary_remote_addr zone=addr:10m;    # 用於設置共享內存區域，addr 是共享內存區域的名稱，10m 表示共享內存區域的大小
 

    server {
        listen       80;
        server_name  www.abc.com;
        location / {
            root   html/www;
            index  index.html index.htm;
            limit_conn addr 1;     # 限制單個IP的並發連接數為1
        }
    }
}

二、限制虛擬主機總連接數

....
http {
    include       mime.types;
    default_type  application
 
/octet-stream;
    sendfile        on;
    keepalive_timeout  65;
    limit_conn_zone $server_name zone=perserver:10m;
    server {
        listen       80;
        server_name  www.abc.com;
        location / {
            root   html/www;
            index  index.html index.htm;
            limit_conn perserver 
 
2;        # 設置虛擬主機連接數為2
        }
    }
}

控制 Nginx 並發連接數