nginx根据cookie分流

众所周知，nginx可以根据url path进行分流，殊不知对于cookie分流也很强大，同时这也是我上篇提到的小流量实验的基础。

 

二话不说，先看需求，两台服务器分别定义为

apache001：192.168.1.1:8080

apache002：192.168.1.2:8080

 

默认服务器为：

default：192.168.1.0:8080

 

前端nginx服务器监听端口8080，需要根据cookie转发，查询的cookie的键（key）为abcdexpid，如果该cookie值（value）以1结尾则转发到apache001，以2结尾则转发到apache002。

 

方案1：

用map，nginx.conf配置如下：

 

map $COOKIE_abcdexpid $group {
~*1$	apache001;
~*2$	apache002;
default	root;
}
 
upstream apache001 {
server 192.168.1.1:8080 weight=1 max_fails=1 fail_timeout=30s;
}
 
upstream apache002 {
server 192.168.1.2:8080 weight=1 max_fails=1 fail_timeout=30s;
}
 
upstream root {
server 192.168.1.0:8080 weight=1 max_fails=1 fail_timeout=30s;
}
 
server {
listen       8080;
server_name  neoremind.net;
 
log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" "group=$group"'
'"$http_user_agent" $gzip_ratio $request_time "$http_x_forwarded_for"';
 
access_log  logs/access_log main;
error_log   logs/error_log;
 
location / {
proxy_pass http://$group; proxy_set_header X-Forwarded-For $remote_addr;
}
}

 

方案2：

利用set和if…else… ，nginx.conf配置如下：

 

 
upstream apache001 {
server 192.168.1.1:8080 weight=1 max_fails=1 fail_timeout=30s;
}
 
upstream apache002 {
server 192.168.1.2:8080 weight=1 max_fails=1 fail_timeout=30s;
}
 
upstream root {
server 192.168.1.0:8080 weight=1 max_fails=1 fail_timeout=30s;
}
 
server {
listen       8080;
server_name  beidoutest.baidu.com;
 
#match cookie
set $group "root";
if ($http_cookie ~* "abcdexpid=([^;]+)(1$)"){
set $group apache001;
}
if ($http_cookie ~* "abcdexpid=([^;]+)(2$)"){
set $group apache002;
}
 
log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" "group=$group"'
'"$http_user_agent" $gzip_ratio $request_time "$http_x_forwarded_for"';
 
access_log  logs/access_log main;
error_log   logs/error_log;
 
location / {
proxy_pass http://$group; proxy_set_header X-Forwarded-For $remote_addr;
}
 
}