Fluentd has nine (9) types of plugins:

• Input
• Parser
• Filter
• Output
• Formatter
• Storage
• Service Discovery
• Buffer
• Metrics

This article gives an overview of the Service Discovery Plugin.

Some plugins support <service_discovery> (e.g. out_forward). Sometimes, the service discovery for an output plugin does not meet one's needs. Fluentd has a pluggable system called Service Discovery that lets the user extend and reuse custom output service discovery.

Here is a simple example to update target by reading file (/etc/fluentd/sd.yaml) with out_forward and service_discovery:

<source>
  @type forward

  <service_discovery>
    @type file
    path "/etc/fluentd/sd.yaml"
  </service_discovery>
</source>

• static
• file
• srv

• out_forward

If this article is incorrect or outdated, or omits critical information, please let us know.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