Lumberjack output plugin

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  • Plugin version: v3.1.9
  • Released on: 2021-08-30
  • Changelog

For other versions, see the Versioned plugin docs.

Getting Help

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For questions about the plugin, open a topic in the Discuss forums. For bugs or feature requests, open an issue in Github. For the list of Elastic supported plugins, please consult the Elastic Support Matrix.

Description

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This output sends events using the lumberjack protocol.

Lumberjack Output Configuration Options

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This plugin supports the following configuration options plus the Common Options described later.

Setting Input type Required

flush_size

number

No

hosts

array

Yes

idle_flush_time

number

No

port

number

Yes

ssl_certificate

a valid filesystem path

Yes

Also see Common Options for a list of options supported by all output plugins.

 

flush_size

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  • Value type is number
  • Default value is 1024

To make efficient calls to the lumberjack output we are buffering events locally. if the number of events exceed the number the declared flush_size we will send them to the logstash server.

hosts

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  • This is a required setting.
  • Value type is array
  • There is no default value for this setting.

List of addresses lumberjack can send to. When the plugin needs to connect to the remote peer, it randomly selects one of the hosts.

When the plugin is registered, it opens a connection to one of the hosts. If the plugin detects a connection error, it selects a different host from the list and opens a new connection.

idle_flush_time

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  • Value type is number
  • Default value is 1

The amount of time since last flush before a flush is forced.

This setting helps ensure slow event rates don’t get stuck in Logstash. For example, if your flush_size is 100, and you have received 10 events, and it has been more than idle_flush_time seconds since the last flush, Logstash will flush those 10 events automatically.

This helps keep both fast and slow log streams moving along in near-real-time.

port

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  • This is a required setting.
  • Value type is number
  • There is no default value for this setting.

the port to connect to

ssl_certificate

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  • This is a required setting.
  • Value type is path
  • There is no default value for this setting.

ssl certificate to use

Common Options

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The following configuration options are supported by all output plugins:

Setting Input type Required

codec

codec

No

enable_metric

boolean

No

id

string

No

codec

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  • Value type is codec
  • Default value is "plain"

The codec used for output data. Output codecs are a convenient method for encoding your data before it leaves the output without needing a separate filter in your Logstash pipeline.

enable_metric

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  • Value type is boolean
  • Default value is true

Disable or enable metric logging for this specific plugin instance. By default we record all the metrics we can, but you can disable metrics collection for a specific plugin.

  • Value type is string
  • There is no default value for this setting.

Add a unique ID to the plugin configuration. If no ID is specified, Logstash will generate one. It is strongly recommended to set this ID in your configuration. This is particularly useful when you have two or more plugins of the same type. For example, if you have 2 lumberjack outputs. Adding a named ID in this case will help in monitoring Logstash when using the monitoring APIs.

output {
  lumberjack {
    id => "my_plugin_id"
  }
}

Variable substitution in the id field only supports environment variables and does not support the use of values from the secret store.