haproxy.cfg

global
  ulimit-n 400011
  maxconn 99999
  maxpipes 99999
  tune.maxaccept 500
  log 127.0.0.1 local0
  log 127.0.0.1 local1 notice
  chroot /var/lib/haproxy
  user haproxy
  group haproxy

defaults
  log global
  mode http
  option dontlognull
  timeout connect 5000ms
  timeout client 50000ms
  timeout server 50000ms
  errorfile 400 /usr/local/etc/haproxy/errors/400.http
  errorfile 403 /usr/local/etc/haproxy/errors/403.http
  errorfile 408 /usr/local/etc/haproxy/errors/408.http
  errorfile 500 /usr/local/etc/haproxy/errors/500.http
  errorfile 502 /usr/local/etc/haproxy/errors/502.http
  errorfile 503 /usr/local/etc/haproxy/errors/503.http
  errorfile 504 /usr/local/etc/haproxy/errors/504.http

listen stats 
  bind *:80
  stats enable
  stats uri / # must be present to see the logs
  stats auth admin:admin

listen mqtt
  bind *:1883
  #bind *:8883 ssl crt /certs/emqtt.pem
  mode tcp
  # Use this to avoid the connection loss when client subscribed for a topic and its idle for sometime
  option clitcpka # For TCP keep-alive
  timeout client 3h # By default TCP keep-alive interval is 2hours in OS kernal, 'cat /proc/sys/net/ipv4/tcp_keepalive_time'
  timeout server 3h # By default TCP keep-alive interval is 2hours in OS kernal
  option tcplog
  balance source
  # docker hosts without swarm network
  #server node_master 192.168.1.7:1883 check
  #server node_node1 192.168.1.8:1883 check
  #server node_node2 192.168.1.9:1883 check
  # docker swarm network can use container names
  server node_master emqtt-master:1883 check
  server node_node1 emqtt-node1:1883 check
  server node_node2 emqtt-node2:1883 check

listen mqtt-dashboard
    bind *:18083
    mode http
    stats enable
    stats uri /haproxy?stats
    stats realm Strictly\ Private
    stats auth admin:admin
    balance roundrobin
    option httpclose
    option forwardfor
    server node_master emqtt-master:18083 check
    server node_node1 emqtt-node1:18083 check
    server node_node2 emqtt-node2:18083 check