Fluentd
0.12
0.12
  • Introduction
  • Overview
    • Getting Started
    • Installation
    • Life of a Fluentd event
    • Support
    • FAQ
  • Use Cases
    • Centralized App Logging
    • Monitoring Service Logs
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  • Configuration
    • Config File Syntax
    • Routing Examples
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  • Buffer Plugins
    • memory
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  • Filter Plugins
    • record_transformer
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    • regexp
    • apache2
    • apache_error
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    • ltsv
    • csv
    • tsv
    • json
    • multiline
    • none
  • Formatter Plugins
    • out_file
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  • Developer
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  • Articles
    • Store Apache Logs into MongoDB
    • Apache To Riak
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    • Before Install
    • Cep Norikra
    • Collect Glusterfs Logs
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    • Docker Logging Efk Compose
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    • Filter Modify Apache
    • Forwarding Over Ssl
    • Free Alternative To Splunk By Fluentd
    • Data Collection to Hadoop (HDFS)
    • Data Analytics with Treasure Data
    • Install By Chef
    • Install By Deb
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    • Recipe Apache Logs To Elasticsearch
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    • Recipe Cloudstack To Mongodb
    • Recipe Csv To Elasticsearch
    • Recipe Csv To Mongo
    • Recipe Csv To S3
    • Recipe Csv To Treasure Data
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    • Recipe Http Rest Api To Mongo
    • Recipe Http Rest Api To S3
    • Recipe Http Rest Api To Treasure Data
    • Recipe Json To Elasticsearch
    • Recipe Json To Mongo
    • Recipe Json To S3
    • Recipe Json To Treasure Data
    • Recipe Nginx To Elasticsearch
    • Recipe Nginx To Mongo
    • Recipe Nginx To S3
    • Recipe Nginx To Treasure Data
    • Recipe Syslog To Elasticsearch
    • Recipe Syslog To Mongo
    • Recipe Syslog To S3
    • Recipe Syslog To Treasure Data
    • Recipe Tsv To Elasticsearch
    • Recipe Tsv To Mongo
    • Recipe Tsv To S3
    • Recipe Tsv To Treasure Data
    • Ruby
    • Scala
    • Splunk Like Grep And Alert Email
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On this page
  • Step0: Before Installation
  • Step1: Install Ruby interpreter
  • Step2: Install Fluentd gem
  • Step3: Run
  • Next Steps

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  1. Articles

Install By Gem

PreviousInstall By DmgNextInstall By Rpm

Last updated 5 years ago

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This article explains how to install Fluentd using Ruby gem.

Step0: Before Installation

Please follow the to configure your OS properly. This will prevent many unnecessary problems.

Step1: Install Ruby interpreter

Please install Ruby >= 1.9.3 on your local environment. In addition, install ruby-dev package via package manager to build native extension gems.

Step2: Install Fluentd gem

Fetch and install the fluentd Ruby gem using the gem command. The official ruby gem page is .

$ gem install fluentd -v "~> 0.12.0" --no-ri --no-rdoc

-v "~> 0.12.0" is needed for v0.12 installation. Without it, you install v0.14 series.

Step3: Run

Run the following commands to confirm that Fluentd was installed successfully:

$ fluentd --setup ./fluent
$ fluentd -c ./fluent/fluent.conf -vv & # -vv enables trace level logs. You can omit -vv option.
$ echo '{"json":"message"}' | fluent-cat debug.test

The last command sends Fluentd a message '{"json":"message"}' with a "debug.test" tag. If the installation was successful, Fluentd will output the following message:

2011-07-10 16:49:50 +0900 debug.test: {"json":"message"}

It's HIGHLY recommended that you set up ntpd on the node to prevent invalid timestamps in your logs.

Next Steps

You're now ready to collect your real logs using Fluentd. Please see the following tutorials to learn how to collect your data from various data sources.

  • Basic Configuration

  • Application Logs

  • Examples

For large deployments, you must use to avoid memory fragmentation. This is already included in the and packages.

The Fluentd gem doesn't come with /etc/init.d/ scripts. You should use process management tools such as , , , or .

, , , ,

, ,

If this article is incorrect or outdated, or omits critical information, please . is a open source project under . All components are available under the Apache 2 License.

Preinstallation Guide
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