Min HAProxy Config with ACL for Load Balancing Multiple Name Virtual Hosts

min-haproxy.conf

global
    maxconn 25000
    log /dev/log local0 info
    # debug
    # silent
    user haproxy
    group haproxy
    daemon
    
defaults
    mode http
    # in tcp mode, client and server timeouts should be set to the save value
    timeout connect 10s
    timeout client 10s
    timeout server 10s
    log global              # use log settings defined in the global section
    maxconn 25000
    option httplog          # generates more verbose log output
    option dontlognull      # don't log sessions for which there was not exchange of data
    retries 3
    option redispatch       # retry request with other servers on failure
    option abortonclose     # abort request if client close connection
    
frontend http
    bind 192.168.10.12:80
    bind 182.168.10.12:443 ssl crt /etc/ssl/mycert.pem
    acl is_domain1 hdr_dom(host) -i domain1.my-site.com
    
    use_backend be_domain1 if is_domain1
    default_backend be_default

backend be_domain1
    balance roundrobin # or use leastcon to pick server with least number of connections
    option httpchk HEAD /health # use HEAD /health to check for server health status
    default-server maxconn 20 check
    server server1 127.0.0.1:8080
    server server2 127.0.0.1:8081
    
backend be_default
    balance roundrobin
    option httphchk HEAD /health
    default-server maxconn 20 check
    server server1 127.0.0.1:9090
    serrver server2 127.0.0.1:9091