Load balancing using HAProxy for MQTT broker ref: http://qiita.com/giwa/items/5da37c3aca0aee75a628

file0.txt

apt-get install haproxy

file1.txt

# Listen to all MQTT requests (port 1883)
listen mqtt
  # MQTT binding to port 1883
  bind *:1883
  # communication mode (MQTT works on top of TCP)
  mode tcp
  option tcplog
  # balance mode (to choose which MQTT server to use)
  balance leastconn
  # MQTT broker 1
  server broker_1 10.255.4.101:1883 check
  # MQTT broker 2
  server broker_2 10.255.4.102:1883 check

file2.txt

haproxy -f /etc/haproxy/haproxy.cfg -p /var/run/haproxy.pid -sf $(cat /var/run/haproxy.pid)

file3.txt

listen stats :1936
    mode http
    stats enable
    stats hide-version
    stats realm Haproxy\ Statistics
    stats uri /

file4.txt

    stats realm Strictly\ Private
    stats auth A_Username:YourPassword
    stats auth Another_User:passwd