Keepalived LoadBalacing

## Pool ID
virtual_server <WAN "frontend" IP> 80 {
        delay_loop 6
        lb_algo sh     # source hash
        lb_kind NAT
        protocol TCP

        real_server <LAN "backend" IP Server 1> 80 {
                weight 1
                TCP_CHECK {
                        connect_timeout 3
                }
        }
        real_server <LAN "backend" IP Server 2> 80 {
                weight 1
                TCP_CHECK {
                        connect_timeout 3
                }
        }
}

virtual_server <WAN "frontend" IP> 443 {
        delay_loop 6
        lb_algo sh     # source hash
        lb_kind NAT
        protocol TCP

        real_server <LAN "backend" IP Server 1> 443 {
                weight 1
                TCP_CHECK {
                        connect_timeout 3
                }
        }
        real_server <LAN "backend" IP Server 2> 443 {
                weight 1
                TCP_CHECK {
                        connect_timeout 3
                }
        }
}