Storage Plugins

Fluentd has nine (9) types of plugins:
​Input​
​Parser​
​Filter​
​Output​
​Formatter​
​Storage​
​Service Discovery​
​Buffer​
​Metrics​
This article gives an overview of Storage Plugin.
Overview
Sometimes, the input/filter/output plugin needs to save its internal state in memory, storage, or key-value store. Fluentd has a pluggable system called Storage that lets a plugin store and reuse its internal state as key-value pairs.
How To Use
For an input, an output, and filter plugin that supports Storage, the <storage> directive can be used to store key-value pair into a key-value store such as a JSON file, MongoDB, Redis, etc.
Here is an example with in_sample:
<source>
  @type sample
  tag docs.fluentd.storage
  <storage awesome_path>
    @type my_custom_storage
  </storage>
</source>
List of Built-in Storage
​local​
List of Core Plugins with Storage support
​in_sample​
List of 3rd party storage plugins
NOTE: This 3rd party storage plugin list does not fully covers all of them.
​fluent-plugin-storage-leveldb​
​fluent-plugin-storage-memcached​
​fluent-plugin-storage-mongo​
​fluent-plugin-storage-redis​
List of 3rd party Plugins with Storage support
NOTE: This 3rd party plugin list does not fully covers all of them.
​fluent-plugin-systemd​
​fluent-plugin-windows-eventlog​
If this article is incorrect or outdated, or omits critical information, please let us know.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.

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Last modified 1yr ago