nginx限制ip连接数和带宽

今天有个人问我，nginx怎么限制ip连接数，突然想不起来了，年龄大了，脑子不怎么好使了。还要看一下配置才想起了。那个人又问我，你测试过的吗？一下子把我问蒙了，我真没测试过了，也不知道启作用了没有。下面我做了一下测试。以前用apache的时候到是做过测试，apache怎么限制ip数，请参考：利用apache限制IP并发数和下载流量控制

1,配置nginx.conf

http{
.............
limit_zone   one  $binary_remote_addr  10m;  //我记得默认配置就有，只不过是注释掉了，如果没有加一下
..............
 server{
 .................
 location {
 .........
 limit_conn one 20;          //连接数限制
 limit_rate 500k;            //带宽限制
 ........
 }
 .................
 }
.............
}

[root@localhost nginx]# /etc/init.d/nginx reload //重新加载

2，测试限制ip连接数

[root@localhost nginx]#  webbench -c 100 -t 2 http://127.0.0.1/index.php
Webbench - Simple Web Benchmark 1.5
Copyright (c) Radim Kolar 1997-2004, GPL Open Source Software.

Benchmarking: GET http://127.0.0.1/index.php
100 clients, running 2 sec.

Speed=429959 pages/min, 2758544 bytes/sec.
Requests: 14332 susceed, 0 failed.

[root@localhost nginx]# cat /var/log/nginx/access.log|grep 503 |more   //这样的数据有很多，最好加个more或者less
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
127.0.0.1 - - [25/Apr/2012:17:52:21 +0800] "GET /index.php HTTP/1.0" 503 213 "-" "WebBench 1.5" -
..............................................................................................

通过以上测试，可以得出限制ip连接数是没有问题的，但是限制带宽看不出来，说实话这个不好测试，所以就没测试了。