Versions | v1.0 (td-agent3) | v0.12 (td-agent2)

Monitoring Fluentd (REST API)

This article describes how to get the internal Fluentd metrics via REST API.

Table of Contents

Monitoring Agent

Fluentd has a monitoring agent to retrieve internal metrics in JSON via HTTP. Please add the following lines to your configuration file.

<source>
  @type monitor_agent
  bind 0.0.0.0
  port 24220
</source>

Next, please restart the agent and get the metrics via HTTP.

$ curl http://host:24220/api/plugins.json
{
  "plugins":[
    {
      "plugin_id":"object:3fec669d6ac4",
      "type":"forward",
      "output_plugin":false,
      "config":{
        "type":"forward"
      }
    },
    {
      "plugin_id":"object:3fec669dfa48",
      "type":"monitor_agent",
      "output_plugin":false,
      "config":{
        "type":"monitor_agent",
        "port":"24220"
      }
    },
    {
      "plugin_id":"object:3fec66aead48",
      "type":"forward",
      "output_plugin":true,
      "buffer_queue_length":0,
      "buffer_total_queued_size":0,
      "retry_count":0,
      "config":{
        "type":"forward",
        "host":"192.168.0.11"
      }
    }
  ]
}

See in_monitor_agent article for more detail.

Monitoring the event flow

Use flowcounter or flowcounter_simple plugin.

Datadog (dd-agent) Integration

Datadog is a cloud monitoring service, and its monitoring agent dd-agent has native integration with Fluentd.

Please refer this documentation for more details.

Last updated: 2018-11-18 05:58:01 +0000

Versions | v1.0 (td-agent3) | v0.12 (td-agent2)

If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is a open source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.