td-agent.conf

<source>
  type forward
  port 24224
  bind 0.0.0.0
</source>

<match ping.**>
  type copy

  <store>
    type redeliver
    regexp ^ping\.(.*)$
    replace process.\1
  </store>

  <store>
    type redeliver
    regexp ^ping\.(.*)$
    replace checker.\1
  </store>

</match>

<match process.**>
  type forest
  subtype flowcounter
  remove_prefix process
  <template>
    count_keys *
    unit minute
    aggregate all
    tag zabbix.ping.__TAG__
  </template>
</match>

<match zabbix.ping.**>
  type forest
  subtype zabbix
  remove_prefix zabbix.ping
  <template>
    zabbix_server zabbix.server
    host __TAG__
    name_keys count
    add_key_prefix fluent_process
  </template>
</match>

<match checker.**>
  type forest
  subtype ping_message_checker
  remove_prefix checker
  <template>
    tag missing.ping.__TAG__
    check_interval 60
    notification_times 60
  </template>
</match>

<match missing.ping.**>
  type file
  path /var/log/td-agent/ping_error
</match>