Getting haproxy to do what I want / 2017-12-28

In the new homeserver I want an haproxy running on the "router" so it can route http requests to the right backend. At the moment I am testing this and after the 'http' config I'm now testing the 'https' part. To keep things consistent things that come in via https also get requested via https from the backends.

For testing I have some ports on the main server forwarded to haproxy so I can test with all aspects of host-header based routing. After some searching I found out that when I visit http://developer.urlurl.org:8080/ the header is set to

Host: developer.urlurl.org:8080

And this wasn't routed to the 'development' server. The production server is the 'default' so I searched for the right incantation to test the domain name part and found:

acl devsite hdr_dom(host) -i developer.urlurl.org

And now it's a config that will test on developer.urlurl.org port 8080 and will run on port 80 too. I like configurations that I can test before bringing them into production.