Fluent Bit: Official Manual
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1.2
1.2
  • Introduction
  • About
    • Why ?
    • Fluentd & Fluent Bit
    • License
  • Installation
    • Supported Platforms
    • Requirements
    • Download Sources
    • Upgrade Notes
    • Build and Install
    • Build with Static Configuration
    • Docker Images
    • Kubernetes
    • 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
    • Exec
    • Forward
    • Head
    • Health
    • Kernel Log Buffer
    • Memory Usage
    • MQTT
    • Network Traffic
    • Process
    • Random
    • Serial Interface
    • Standard Input
    • Syslog
    • Systemd
    • Tail
    • TCP
    • 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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On this page
  • Configuration Parameters
  • Getting Started
  • Command Line
  • Configuration File
  • Testing

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  1. Input Plugins

Health

Health input plugin allows you to check how healthy a TCP server is. It does the check by issuing a TCP connection every a certain interval of time.

Configuration Parameters

The plugin supports the following configuration parameters:

Key

Description

Host

Name of the target host or IP address to check.

Port

TCP port where to perform the connection check.

Interval_Sec

Interval in seconds between the service checks. Default value is 1.

Internal_Nsec

Specify a nanoseconds interval for service checks, it works in conjuntion with the Interval_Sec configuration key. Default value is 0.

Alert

If enabled, it will only generate messages if the target TCP service is down. By default this option is disabled.

Add_Host

If enabled, hostname is appended to each records. Default value is false.

Add_Port

If enabled, port number is appended to each records. Default value is false.

Getting Started

In order to start performing the checks, 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 generate the checks with the following options:

$ fluent-bit -i health://127.0.0.1:80 -o stdout

Configuration File

In your main configuration file append the following Input & Output sections:

[INPUT]
    Name          health
    Host          127.0.0.1
    Port          80
    Interval_Sec  1
    Interval_NSec 0

[OUTPUT]
    Name   stdout
    Match  *

Testing

Once Fluent Bit is running, you will see some random values in the output interface similar to this:

$ fluent-bit -i health://127.0.0.1:80 -o stdout
Fluent-Bit v0.9.0
Copyright (C) Treasure Data

[2016/10/07 21:37:51] [ info] [engine] started
[0] health.0: [1475897871, {"alive"=>true}]
[1] health.0: [1475897872, {"alive"=>true}]
[2] health.0: [1475897873, {"alive"=>true}]
[3] health.0: [1475897874, {"alive"=>true}]

Last updated 5 years ago

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