second backup server when first on fails

[Hauke Bruno Wollentin]

Hi together,

I have haproxy 1.4.22 running with 1 frontend and 1 backend. There are 2 
servers in that backend:

   server prim [...] check port 80
   server sec [...] check port 80 backup

First one is a bigger internet connection than the second, because of that I 
only want to forward the packets to 'sec' if 'prim' fails.

I am looking for some kind of configuration, that will deliver a local 
maintenance website if both 'prim' and 'sec' fails.

Any ideas?



Best regards,
Hauke