HAProxy Multiple Domains

Question

We currently have a HAProxy set up that splits the load over two backend servers and it reads/sets a cookie accordingly so you stay on the same server throughout the process.

However, we now have a problem.. we have added more domains to the server and as the cookie is set per domain all of the other domains are ignoring it and are picking a random server on each request.

We have tried doing

cookie        PROXYSERVERID insert indirect nocache domain .domain1.com domain .domain2.com 

But this just causes it to set the cookie on the second domain and ignores the first.

Regards.

Dave.

Answer 1

Can you use the ACL to set cookies based on the Host header? For example, setup a backend per domain, and pass in the correct cookie in each backend.

http://www.techrawr.com/2009/09/18/using-the-acl-in-haproxy-for-load-balancing-named-virtual-hosts/