Nginx 又一个牛X的功能，流量拷贝( 二 ) _Nginx

官网给出的示例倒是很简单，如下：
location / {    mirror /mirror;    proxy_pass http://backend;}location = /mirror {    internal;    proxy_pass http://test_backend$request_uri;}如果请求体被镜像，那么在创建子请求之前会先读取请求体
location / {    mirror /mirror;    mirror_request_body off;    proxy_pass http://backend;}location = /mirror {    internal;    proxy_pass http://log_backend;    proxy_pass_request_body off;    proxy_set_header Content-Length "";    proxy_set_header X-Original-URI $request_uri;} 前面我们安装了Nginx ，但是里面没有包含我们所需的ngx_http_mirror_module模块，因此，真正要使用的时候最好还是采用自定义安装，即从源码构建
首先，下载源码 http://nginx.org/en/download.html
接下来，编译安装，例如：
./configure    --sbin-path=/usr/local/nginx/nginx    --conf-path=/usr/local/nginx/nginx.conf    --pid-path=/usr/local/nginx/nginx.pid    --with-http_ssl_module    --without-http_limit_req_module    --without-http_mirror_module    --with-pcre=../pcre-8.43    --with-zlib=../zlib-1.2.11    --add-module=/path/to/ngx_devel_kit    --add-module=/path/to/lua-nginx-modulemake & make install 配置
upstream api.abc.com {    server 127.0.0.1:8080;}upstream tapi.abc.com {    server 127.0.0.1:8081;}server {    listen 80; # 源站点    location /api {        proxy_pass http://api.cjs.com;        proxy_set_header Host $host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;        # 流量复制    mirror /newapi;     mirror /mirror2;    mirror /mirror3;    # 复制请求体    mirror_request_body on;     }    # 镜像站点    location /tapi {        proxy_pass http://tapi.cjs.com$request_uri;        proxy_pass_request_body on;        proxy_set_header Host $host;        proxy_set_header X-Real-IP $remote_addr;        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;    }}4. 文档Nginx文档

http://nginx.org/en/docs/
http://nginx.org/en/docs/http/ngx_http_mirror_module.html
http://nginx.org/en/docs/beginners_guide.html
http://nginx.org/en/docs/http/ngx_http_core_module.html#location
http://nginx.org/en/docs/configure.html

第三方模板

http://luajit.org/https://www.nginx.com/resources/wiki/
https://www.nginx.com/resources/wiki/modules/lua/
https://www.nginx.com/resources/wiki/modules/index.html
https://github.com/openresty/lua-nginx-module

补充

# 查看进程运行时间ps -eo pid,user,lstart,etime,cmd | grep nginx# 查看已经建立连接的数量netstat -an | grep ESTABLISHED | wc -l# 查看80端口的连接数netstat -an | grep ":80" | wc -l