Can anyone help me? How to create an ACL to use the backup server if a server goes DOWN. So, if the two backend servers are UP, I use the registered servers. If one (only one) becomes unavailable, traffic is directed to the backup server.
Below my settings. frontend haproxy option forwardfor bind server.lab.local:9191 default_backend backend_servers backend backend_servers server server1 192.168.239.151:9090 check server server2 192.168.239.152:9090 check server serverBKP 192.168.17.2:9090 backup Thank you for your help --

