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= Fluentd
Fluentd is an event collector system. It is a generalized version of syslogd, which handles JSON objects for its log messages.
== Architecture
Fluentd collects events from various data sources and writes them to files, database or other types of storages:
Web apps ---+ +--> file
| |
+--> ---+
/var/log ------> Fluentd ------> mail
+--> ---+
| |
Apache ---- +--> Fluentd
Fluent also supports log transfer:
Web server
+---------+
| Fluentd -------
+---------+| |
+---------+ |
|
Proxy server | Log server, Amazon S3, HDFS, ...
+---------+ +--> +---------+
| Fluentd ----------> | Fluentd ||
+---------+| +--> +---------+|
+---------+ | +---------+
|
Database server |
+---------+ |
| Fluentd ---------> mail
+---------+|
+---------+
An event consists of *tag*, *time* and *record*. Tag is a string separated with '.' (e.g. myapp.access). It is used to categorize events. Time is a UNIX time recorded at occurrence of an event. Record is a JSON object.
== Quick Start
$ gem install fluentd
$ # install sample configuration file to the directory
$ fluentd -s conf
$ fluentd -c conf/fluent.conf &
$ echo '{"json":"message"}' | fluent-cat debug.test
== Meta
Web site:: http://fluentd.org/
Documents:: http://docs.fluentd.org/
Source repository:: http://github.com/fluent
Discussion:: http://groups.google.com/group/fluentd
Author:: Sadayuki Furuhashi
Copyright:: (c) 2011 FURUHASHI Sadayuki
License:: Apache License, Version 2.0
== Contributors:
Patches contributed by {those people}[https://github.com/fluent/fluentd/contributors].
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