Hi, I'm using haproxy for few years on quite big environments so I'd like to say 'BIG THANKS' before asking a question :-)
simple scenario: backend www1 [ few hundreds of servers ] backend www2 [ few hundreds of servers ] backend www3 [ few hundreds of servers ] backend www4 [ few hundreds of servers ] frontend http bind :80 acl host-www1 hdr(host) -i www1 acl host-www2 hdr(host) -i www2 acl host-www3 hdr(host) -i www3 acl host-www4 hdr(host) -i www4 use_backend www1 if host-www1 use_backend www2 if host-www2 use_backend www3 if host-www3 use_backend www4 if host-www4 Is there any way to create _meta_ backend over www1+www2+www3+www4? I need to push traffic to all servers (from all backends) in case of one specific acl case. Is it necessary to create 'backend all' with list of all servers? What about amount of health checks if server is present in _many_ backends ? Cheers, Bartek