Forward

Forward is the protocol used by Fluent Bit and Fluentd to route messages between peers. This plugin implements the input service to listen for Forward messages.
Configuration Parameters
The plugin supports the following configuration parameters:
Key
Description
Default
Listen
Listener network interface.
0.0.0.0
Port
TCP port to listen for incoming connections.
24224
Buffer_Max_Size
Specify the maximum buffer memory size used to receive a Forward message. The value must be according to the Unit Size specification.
Buffer_Chunk_Size
Buffer_Chunk_Size
By default the buffer to store the incoming Forward messages, do not allocate the maximum memory allowed, instead it allocate memory when is required. The rounds of allocations are set by Buffer_Chunk_Size. The value must be according to the Unit Size specification.
32KB
Getting Started
In order to receive Forward messages, you can run the plugin from the command line or through the configuration file:
Command Line
From the command line you can let Fluent Bit listen for Forward messages with the following options:
$ fluent-bit -i forward -o stdout
By default the service will listen an all interfaces (0.0.0.0) through TCP port 24224, optionally you can change this directly, e.g:
$ fluent-bit -i forward://192.168.3.2:9090 -o stdout
In the example the Forward messages will only arrive through network interface under 192.168.3.2 address and TCP Port 9090.
Configuration File
In your main configuration file append the following Input & Output sections:
[INPUT]
    Name              forward
    Listen            0.0.0.0
    Port              24224
    Buffer_Chunk_Size 32KB
    Buffer_Max_Size   64KB
​
[OUTPUT]
    Name   stdout
    Match  *
Testing
Once Fluent Bit is running, you can send some messages using the fluent-cat tool (this tool is provided by Fluentd:
$ echo '{"key 1": 123456789, "key 2": "abcdefg"}' | fluent-cat my_tag
In Fluent Bit we should see the following output:
$ bin/fluent-bit -i forward -o stdout
Fluent-Bit v0.9.0
Copyright (C) Treasure Data
​
[2016/10/07 21:49:40] [ info] [engine] started
[2016/10/07 21:49:40] [ info] [in_fw] binding 0.0.0.0:24224
[0] my_tag: [1475898594, {"key 1"=>123456789, "key 2"=>"abcdefg"}]

Exec

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Last modified 3yr ago

Key	Description	Default
Listen	Listener network interface.	0.0.0.0
Port	TCP port to listen for incoming connections.	24224
Buffer_Max_Size	Specify the maximum buffer memory size used to receive a Forward message. The value must be according to the Unit Size specification.	Buffer_Chunk_Size
Buffer_Chunk_Size	By default the buffer to store the incoming Forward messages, do not allocate the maximum memory allowed, instead it allocate memory when is required. The rounds of allocations are set by Buffer_Chunk_Size. The value must be according to the Unit Size specification.	32KB