HAProxy redirect requests from one port to another

Question

I'm using HAProxy version 1.6.

How would I modify the config to redirect requests from: localhost:8081/myapp

to: localhost:8111/myapp

Thanks!

Answer 1

frontend weblb
bind *:8081
acl if is_seller url_beg /myapp  
use_backend sellerserver if is_seller

backend sellerserver
balance source
server web1 127.0.0.1:8111 maxconn 1024 weight 3 check inter 2000 rise 2 fall 3

Answer 2

You could try using replace-value on the Host header:

http-request replace-value Host localhost:8081 localhost:8111

Which is nice because it also supports regexes:

http-request replace-value Host (.*):8081 \1:8111