Hi,
Le 03/01/2013 23:16, Zachary Stern a écrit :
So, very odd issue.
I have my HAproxy configured as follows (URLs and IPs have been obfuscated):
https://gist.github.com/4447840
The URL that it is set to check for to make sure the backend nodes are
up doesn't exist yet.
And yet, when I got to haproxyip/haproxy?stats, it shows both servers as up!
What am I missing here?
The issue is in your "option httpchk" syntax.
The parameter is not declared as expected :
option httpchk http://someurl.stag.somecompany.com/foo.jpg
Several issues here :
1. the HTTP request will provide a "OPTION" method, which, I guess,
replies with a "200 OK".
2. When specifying the parameters, you must think HTTP : the hostname
should be provided in a "Host" header
Here is what haproxy sends with your configuration.
OPTIONS http://someurl.stag.somecompany.com/foo.jpg HTTP/1.0
Please try with something like :
option httpchk GET /foo.jpg HTTP/1.1\r\nHost:\
someurl.stag.somecompany.com
Which will send this request :
GET /foo.jpg HTTP/1.1
Host: someurl.stag.somecompany.com
It's tricky but it is how haproxy accepts to provide headers in the
check request ;-)
You can have a look to the example provided in the documentation for
more details :
http://cbonte.github.com/haproxy-dconv/configuration-1.4.html#option%20httpchk
Thanks in advance.
-Zachary
--
Cyril Bonté
