local

The local metrics plugin stores the values on memory.

Parameters

default_labels

Specifies the default labels for the metrics. (default: {agent: "Fluentd", hostname: "#{Socket.gethostname}"})

labels

Specifies other custom labels for the metrics. (default: {})

Example

With this configuration:

<system>
  <metrics>
    @type local
  </metrics>
</system>

The above configuration will save the internal metrics for plugins on memory. As a result, you can retrieve metrics from memory and also you can replace with your custom metrics plugin.

Actually, @type local metrics plugin has equivalent functionality for previous single value based Ruby instance variables. This behavior will be changed by other 3rd party plugins.

If this article is incorrect or outdated, or omits critical information, please let us know.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.