HAProxy reqrep remove URI on backend request
- by Jim
real quick question regarding HAProxy reqrep. I am trying to rewrite/replace the request that gets sent to the backend.
I have the following example domain and URIs
http://domain/web1
http://domain/web2
I want web1 to go to backend webfarm1, and web2 to go to webfarm2. Currently this does happen. However I want to strip off the web1 or web2 URI when the request is sent to the backend.
Here is my haproxy.cfg
frontend webVIP_80
mode http
bind :80
#acl routing to backend
acl web1_path path_beg /web1
acl web2_path path_beg /web2
#which backend
use_backend webfarm1 if web1_path
use_backend webfarm2 if web2_path
default_backend webfarm1
backend webfarm1
mode http
reqrep ^([^\ ]*)\ /web1/(.*) \1\ /\2
balance roundrobin
option httpchk HEAD /index HTTP/1.1\r\nHost:\ example.com
server webtest1 10.0.0.10:80 weight 5 check slowstart 5000ms
server webtest2 10.0.0.20:80 weight 5 check slowstart 5000ms
backend webfarm2
mode http
reqrep ^([^\ ]*)\ /web2/(.*) \1\ /\2
balance roundrobin
option httpchk HEAD /index HTTP/1.1\r\nHost:\ example.com
server webtest1-farm2 10.0.0.110:80 weight 5 check slowstart 5000ms
server webtest2-farm2 10.0.0.120:80 weight 5 check slowstart 5000ms
If I go to http://domain/web1 or http://domain/web2 I see it in the error logs that the request on a server in each backend that the requst is for the resource /web1 or /web2 respectively. Therefore I believe there to be something wrong with my regular expression, even though I copied and pasted it from the Documentation. http://code.google.com/p/haproxy-docs/wiki/reqrep
Summary:
I'm trying to route traffic based on URI, however I want to strip the URI on the backend side.
Go to http://domain/web1 -- backend request of / to webfarm1
Thank you!
-Jim
