td-agent.conf

<source>
  type forward
  port 24224
</source>

<source>
  type monitor_agent
  port 24220
</source>

<match foo>
  type copy
  <store>
    type flowcounter
    count_keys *
    unit second
    aggregate all
    tag fluentd.flowcounter.foo
    @label @dogstatsd
  </store>
  <store>
    @id forward1
    type forward
    <server>
      host xx.xx.xx.01
      port 24224
    </server>
  </store>
  <store>
    @id forward2
    type forward
    <server>
      host xx.xx.xx.02
      port 24224
    </server>
  </store>
  <store>
    @id forward3
    type forward
    <server>
      host xx.xx.xx.03
      port 24224
    </server>
  </store>
  <store>
    @id forward4
    type forward
    <server>
      host xx.xx.xx.04
      port 24224
    </server>
  </store>
</match>