global
  log stdout format raw local0
  maxconn 100000
  hard-stop-after 45s

defaults
  log global
  mode tcp
  option tcplog
  timeout connect 3s
  timeout client  2m
  timeout server  2m
  timeout tunnel  1h

frontend proxy_gateway
  bind :8080
  default_backend gateway_workers

backend gateway_workers
  balance leastconn
  option tcp-check
  default-server inter 2s fall 3 rise 2 slowstart 10s
  server gateway-a gateway-a:8080 check resolvers docker init-addr libc,none
  server gateway-b gateway-b:8080 check resolvers docker init-addr libc,none

resolvers docker
  nameserver dns 127.0.0.11:53
  resolve_retries 3
  timeout resolve 1s
  timeout retry 1s
  hold valid 10s

frontend stats
  mode http
  bind :8404
  http-request use-service prometheus-exporter if { path /metrics }
  http-request return status 200 content-type text/plain string ok if { path /healthz }
  stats enable
  stats uri /stats