步骤：

1 编译nginx,加上参数 --with-http_stub_status_module

以我自己的编译选项为例：

  #配置指令  ./configure --prefix=/usr/local    --user=nginx     --group=nginx    --with-http_ssl_module    --with-http_realip_module    --http-client-body-temp-path=/usr/local/var/tmp/nginx/client     --http-proxy-temp-path=/usr/local/var/tmp/nginx/proxy     --http-fastcgi-temp-path=/usr/local/var/tmp/nginx/fcgi     --http-scgi-temp-path=/usr/local/var/tmp/nginx/scgi     --http-uwsgi-temp-path=/usr/local/var/tmp/nginx/uwsgi     --with-http_geoip_module     --with-http_stub_status_module

2 修改nginx配置文件，添加监控状态配置

在nginx.conf的server块中添加如下代码

location /nginx_status {    # Turn on nginx stats    stub_status on;    # I do not need logs for stats    access_log   off;    # Security: Only allow access from 192.168.1.100 IP #    #allow 192.168.1.100;    # Send rest of the world to /dev/null #    #deny all;}

这段代码是加在默认的server里的，
假设默认server的配置为

listen       127.0.0.1:80;server_name  127.0.0.1;

那么访问nginx的状态，就可以通过 curl 127.0.0.1/nginx_status访问了

返回结果类似于：

Active connections: 1 server accepts handled requests 655 655 1985 Reading: 0 Writing: 1 Waiting: 0