[root@server]# cat /usr/local/nginx/conf/upstream.conf

upstream vserver_01 {

   server 172.21.198.136:8001 weight=1 max_fails=1 fail_timeout=30;

}

upstream vserver_02 {

   server 172.21.198.136:8002 weight=1 max_fails=1 fail_timeout=30;

}

#基于cookie

#map $http_cookie $vserver {

#    ~*VT2$ vserver_02;

#    ~*VT1$ vserver_01;

#    default vserver_01;

#}

 

#基于header

map $http_x_custom_header $vserver {

    ~*VT2$ vserver_02;

    ~*VT1$ vserver_01;

    default vserver_01;

}

测试：

curl --header  'X-Custom-Header: VT1' -v  http:///test.html

curl --header  'X-Custom-Header: VT2' -v  http:///test.html