1.nginx监控模块
1)编译nginx,加上参数 --with-http_stub_status_module
#/usr/local/nginx/sbin/nginx -V
./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module
#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;
}
解释:
Active connections：对后端发起的活动连接数。
Server accepts handled requests：Nginx总共处理了655个连接，成功创建655次握手(证明中间没有失败的)，总共处理了1985个请求。
Reading：Nginx 读取到客户端的Header信息数。
Writing：Nginx 返回给客户端的Header信息数。
Waiting：开启keep-alive的情况下，这个值等于 active – (reading + writing)，意思就是Nginx已经处理完成，正在等候下一次请求指令的驻留连接。
/usr/local/nginx/sbin/nginx -t //测试配置是否正确
/usr/local/nginx/sbin/nginx -s reload
2.设置最大连接数（50000）/加快tcp连接数的回收/让空的tcp允许回收利用/关闭洪水攻击抵御
echo 50000 > /proc/sys/net/core/somaxconn
echo 1 > /proc/sys/net/ipv4/tcp_tw/recycle
echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse
echo 0 > /proc/sys/net/ipv4/tcp_syncookies
3.设置打开更多文件数
ulimit -n 50000
vim /etc/nginx/nginx.conf
worker_rlimit_nofile 10000; //nginx允许打开最大文件数10000-->写在全局 不是在events
events{
worker_connections 10240;
}
/usr/sbin/nginx -t
/usr/sbin/nginx -s reload
4.ab -c 5000 -n 100000 http://192.168.63.129/index.html //压力测试
测试结果:
Server Software: nginx/1.4.6
Server Hostname: 192.168.63.129
Server Port: 80
Document Path: /index.html
Document Length: 65 bytes
Concurrency Level: 5000
Time taken for tests: 46.416 seconds
Complete requests: 100000
Failed requests: 90202
(Connect: 0, Receive: 0, Length: 90202, Exceptions: 0)
Write errors: 0
Non-2xx responses: 90282
Total transferred: 36624606 bytes
HTML transferred: 18815922 bytes
Requests per second: 2154.42 [#/sec] (mean)
Time per request: 2320.813 [ms] (mean)
Time per request: 0.464 [ms] (mean, across all concurrent requests)
Transfer rate: 770.55 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 18 1251 2273.8 824 31950
Processing: 298 839 299.1 855 6307
Waiting: 1 648 298.8 651 6194
Total: 408 2090 2323.2 1697 36083
Percentage of the requests served within a certain time (ms)
50% 1697
66% 1758
75% 1802
80% 1843
90% 2583
95% 4601
98% 8399
99% 8807
100% 36083 (longest request)
5000并发100000连接数 失败请求90202 幸好这个是测试服务器
