The HAProxy config on the barebone server

haproxy.cfg

global
        log /dev/log    local0
        log /dev/log    local1 notice
        chroot /var/lib/haproxy
        stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
        stats timeout 30s
        user haproxy
        group haproxy
        daemon

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        timeout connect 10s
        timeout client  60s
        timeout server  60s
        errorfile 400 /etc/haproxy/errors/400.http
        errorfile 403 /etc/haproxy/errors/403.http
        errorfile 408 /etc/haproxy/errors/408.http
        errorfile 500 /etc/haproxy/errors/500.http
        errorfile 502 /etc/haproxy/errors/502.http
        errorfile 503 /etc/haproxy/errors/503.http
        errorfile 504 /etc/haproxy/errors/504.http

frontend http_bind
        bind *:80
        mode tcp
        option tcplog
        default_backend router_http


frontend https_bind
        bind *:443
        mode tcp
        option tcplog
        default_backend router_https

backend router_http
        mode tcp
        server router_server router:80

backend router_https
        mode tcp
        server router_server router:443