Fluentd has nine (9) types of plugins:
This article gives an overview of Metrics Plugin.
Sometimes, the input/filter/output plugin needs to save its internal metrics in memory, influxdb or prometheus format ready in instances. Fluentd has a pluggable system called Metrics that lets a plugin store and reuse its internal state as metrics instances.
On Fluentd core, metrics plugin will handled on
<system>to set up easily.
Here is an example with
localtype plugin should provide equivalent behavior before Fluentd v1.13. This metrics type should provide single numeric value storing functionality.
localtype plugin should be used by default.
Fluent::Plugin::Inputfor Input plugin base class
Fluent::Plugin::Outputfor most of output plugin base class
Fluent::Plugin::Filterfor Filter plugin base class
Fluent::Plugin::BareOutputfor fluent-plugin-forest output plugin base class
NOTE: This 3rd party metrics plugin list does not fully covers all of them.