Fluent Bit: Official Manual
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1.3
1.3
  • Introduction
  • About
    • Why ?
    • Fluentd & Fluent Bit
    • License
  • Installation
    • Supported Platforms
    • Requirements
    • Download Sources
    • Upgrade Notes
    • Build and Install
    • Build with Static Configuration
    • Docker Images
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    • TD Agent Bit
    • Debian Packages
    • Ubuntu Packages
    • CentOS Packages
    • Raspberry Pi
    • Yocto Project
    • Windows
  • Getting Started
    • Service
    • Input
    • Parser
    • Filter
    • Buffer
    • Routing
    • Output
  • Configuration
    • Configuration Schema
    • Configuration File
    • Configuration Variables
    • Configuration Commands
    • Buffering / Storage
    • Monitoring
    • Unit Sizes
    • TLS / SSL
    • Backpressure
    • Memory Usage
    • Upstream Servers
    • Scheduler
    • Stream Processor
  • Service
  • Input Plugins
    • Collectd
    • CPU Usage
    • Disk Usage
    • Dummy
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    • Forward
    • Head
    • Health
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    • MQTT
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    • Syslog
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    • Tail
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    • Thermal
    • Windows Event Log
  • Parsers
    • JSON Parser
    • Regular Expression Parser
    • LTSV Parser
    • Logfmt Parser
    • Decoders
  • Filter Plugins
    • Grep
    • Kubernetes
    • Lua
    • Parser
    • Record Modifier
    • Standard Output
    • Throttle
    • Nest
    • Modify
  • Output Plugins
    • Azure
    • BigQuery
    • Counter
    • Datadog
    • Elasticsearch
    • File
    • FlowCounter
    • Forward
    • GELF
    • HTTP
    • InfluxDB
    • Kafka
    • Kafka REST Proxy
    • NATS
    • Null
    • Stackdriver
    • Standard Output
    • Splunk
    • TCP & TLS
    • Treasure Data
  • Fluent Bit for Developers
    • Library API
    • Ingest Records Manually
    • Fluent Bit and Golang Plugins
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  • Configuration Parameters
  • Command Line

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  1. Output Plugins

Standard Output

Last updated 5 years ago

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The stdout output plugin allows to print to the standard output the data received through the input plugin. Their usage is very simple as follows:

Configuration Parameters

Key

Description

default

Format

Specify the data format to be printed. Supported formats are msgpack json, json_lines and json_stream.

msgpack

json_date_key

Specify the name of the date field in output

date

json_date_format

Specify the format of the date. Supported formats are double, iso8601 (eg: 2018-05-30T09:39:52.000681Z) and epoch.

double

Command Line

$ bin/fluent-bit -i cpu -o stdout -v

We have specified to gather usage metrics and print them out to the standard output in a human readable way:

$ bin/fluent-bit -i cpu -o stdout -p format=msgpack -v
Fluent-Bit v1.2.x
Copyright (C) Treasure Data

[2016/10/07 21:52:01] [ info] [engine] started
[0] cpu.0: [1475898721, {"cpu_p"=>0.500000, "user_p"=>0.250000, "system_p"=>0.250000, "cpu0.p_cpu"=>0.000000, "cpu0.p_user"=>0.000000, "cpu0.p_system"=>0.000000, "cpu1.p_cpu"=>0.000000, "cpu1.p_user"=>0.000000, "cpu1.p_system"=>0.000000, "cpu2.p_cpu"=>0.000000, "cpu2.p_user"=>0.000000, "cpu2.p_system"=>0.000000, "cpu3.p_cpu"=>1.000000, "cpu3.p_user"=>0.000000, "cpu3.p_system"=>1.000000}]
[1] cpu.0: [1475898722, {"cpu_p"=>0.250000, "user_p"=>0.250000, "system_p"=>0.000000, "cpu0.p_cpu"=>0.000000, "cpu0.p_user"=>0.000000, "cpu0.p_system"=>0.000000, "cpu1.p_cpu"=>1.000000, "cpu1.p_user"=>1.000000, "cpu1.p_system"=>0.000000, "cpu2.p_cpu"=>0.000000, "cpu2.p_user"=>0.000000, "cpu2.p_system"=>0.000000, "cpu3.p_cpu"=>0.000000, "cpu3.p_user"=>0.000000, "cpu3.p_system"=>0.000000}]
[2] cpu.0: [1475898723, {"cpu_p"=>0.750000, "user_p"=>0.250000, "system_p"=>0.500000, "cpu0.p_cpu"=>2.000000, "cpu0.p_user"=>1.000000, "cpu0.p_system"=>1.000000, "cpu1.p_cpu"=>0.000000, "cpu1.p_user"=>0.000000, "cpu1.p_system"=>0.000000, "cpu2.p_cpu"=>1.000000, "cpu2.p_user"=>0.000000, "cpu2.p_system"=>1.000000, "cpu3.p_cpu"=>0.000000, "cpu3.p_user"=>0.000000, "cpu3.p_system"=>0.000000}]
[3] cpu.0: [1475898724, {"cpu_p"=>1.000000, "user_p"=>0.750000, "system_p"=>0.250000, "cpu0.p_cpu"=>1.000000, "cpu0.p_user"=>1.000000, "cpu0.p_system"=>0.000000, "cpu1.p_cpu"=>2.000000, "cpu1.p_user"=>1.000000, "cpu1.p_system"=>1.000000, "cpu2.p_cpu"=>1.000000, "cpu2.p_user"=>1.000000, "cpu2.p_system"=>0.000000, "cpu3.p_cpu"=>1.000000, "cpu3.p_user"=>1.000000, "cpu3.p_system"=>0.000000}]

No more, no less, it just works.

CPU