Hi,
On 29/07/2015 13:07, mlist wrote:
We have 3 backend servers balanced with haproxy with "cookie insert" option and
ssl redirection.
For our help desk, we need operators can access a specific backend server to
check specific server when we have problems on this backend server.
We try to do that with the following section, so no hosts file nor DNS mapping
and special binding on backend servers are needed to access specific backend
server, maintaining the right cookie after use_server.
We have 3 backend servers: web1, web4 and web10. We want to go on:
web1 if in the URL haproxy find " aps_ass_UNIQUE_web1_" -> ex:
http://<mydomain>/app1/aps_ass_UNIQUE_web1_
web4 if in the URL haproxy find " aps_ass_UNIQUE_web4_" -> ex:
http://<mydomain>/app1/aps_ass_UNIQUE_web4_
web4 if in the URL haproxy find " aps_ass_UNIQUE_web10_" -> ex:
http://<mydomain>/app1/aps_ass_UNIQUE_web10_
Following configuration does not work, can you help to identify a solution ?
acl aps_ass_web1 path_reg (.*)\/aps_ass_UNIQUE_web1_(.*)
acl aps_ass_web4 path_reg (.*)\/aps_ass_UNIQUE_web4_(.*)
acl aps_ass_web10 path_reg (.*)\/aps_ass_UNIQUE_web10_(.*)
reqirep (.*)\/aps_ass_UNIQUE_web[0-9]*_(.*) \1\2
use-server web1 if aps_ass_web1
use-server web4 if aps_ass_web4
use-server web10 if aps_ass_web10
I see several issues here.
1. One you haven't met yet : your "reqirep" pattern will delete the "/"
at the beginning, which may produce some "400 Bad Request" on the backend.
Example :
GET /aps_ass_UNIQUE_web1_index.html HTTP/1.1
will be replaced by
GET index.html HTTP/1.1
2. reqirep is executed *BEFORE* the evaluation of user-server. So the
routing information has already disappeared when it is time to choose a
server with "use-server".
3. Without any other details (please provide a more complete
configuration next time), I assume that you'll meet another issue due to
cookie persistence. You'll probably want to have a look to "force-persist".
Why not choosing a combination of cookie persistence and force-persist
instead of doing some magic with the urls ?
--
Cyril Bonté
