sudo install haproxy keepalived -y

...
frontend stats
    mode http
    bind *:8404
    stats enable
    stats uri /stats
    stats refresh 2s
    stats admin if LOCALHOST
 
frontend localnodes
        bind *:80
        mode tcp
        default_backend nodes
 
backend nodes
        mode tcp
        balance leastconn
        server web01 192.168.25.188:80 check inter 2s
        server web02 192.168.25.189:80 check inter 2s