# install haproxy
yum install -y haproxy

# config haproxy for rabbitmq
cat > /etc/haproxy/haproxy.cfg << "EOF"
global
  log 127.0.0.1 local0 notice

  maxconn 10000
  user haproxy
  group haproxy

defaults
  timeout connect 5s
  timeout client 100s
  timeout server 100s

listen rabbitmq
  bind :5673
  mode tcp
  balance roundrobin
  server rabbitmq-01 <node1>:5672 check inter 5s rise 2 fall 3
  server rabbitmq-02 <node2>:5672 check inter 5s rise 2 fall 3

# optional, for proxying management site
frontend front_rabbitmq_management
  bind :15672
  default_backend back_rabbitmq_management

backend back_rabbitmq_management
  balance source
  server rabbitmq-mgmt-01 10.25.1.101:15673 check
  server rabbitmq-mgmt-02 10.25.1.102:15673 check

# optional, for monitoring
listen stats :9000
  mode http
  stats enable
  stats hide-version
  stats realm Haproxy\ Statistics
  stats uri /
  stats auth haproxy:haproxy
EOF

# restart haproxy
systemctl restart haproxy

# TODO haproxy logging