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
    • Data Analytics
    • Connecting to Data Storages
    • Stream Processing
    • Windows Event Collection
    • IoT Data Logger
  • Configuration
    • Config File Syntax
    • Routing Examples
    • Recipes
  • Deployment
    • Logging
    • Monitoring
    • Signals
    • RPC
    • High Availability Config
    • Failure Scenarios
    • Performance Tuning
    • Plugin Management
    • Trouble Shooting
    • Secure Forwarding
    • Fluentd UI
    • Command Line Option
  • Container Deployment
    • Docker Image
    • Docker Logging Driver
    • Docker Compose
    • Kubernetes
  • Input Plugins
    • tail
    • forward
    • secure_forward
    • udp
    • tcp
    • http
    • unix
    • syslog
    • exec
    • scribe
    • multiprocess
    • dummy
    • Others
  • Output Plugins
    • file
    • s3
    • kafka
    • forward
    • secure_forward
    • exec
    • exec_filter
    • copy
    • geoip
    • roundrobin
    • stdout
    • null
    • webhdfs
    • splunk
    • mongo
    • mongo_replset
    • relabel
    • rewrite_tag_filter
    • Others
  • Buffer Plugins
    • memory
    • file
  • Filter Plugins
    • record_transformer
    • grep
    • parser
    • stdout
  • Parser Plugins
    • regexp
    • apache2
    • apache_error
    • nginx
    • syslog
    • ltsv
    • csv
    • tsv
    • json
    • multiline
    • none
  • Formatter Plugins
    • out_file
    • json
    • ltsv
    • csv
    • msgpack
    • hash
    • single_value
  • Developer
    • Plugin Development
    • Community
    • Mailing List
    • Source Code
    • Bug Tracking
    • ChangeLog
    • Logo
  • Articles
    • Store Apache Logs into MongoDB
    • Apache To Riak
    • Store Apache Logs into Amazon S3
    • Before Install
    • Cep Norikra
    • Collect Glusterfs Logs
    • Common Log Formats
    • Docker Logging Efk Compose
    • Docker Logging
    • 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
    • Install By Dmg
    • Install By Gem
    • Install By Rpm
    • Install From Source
    • Install On Beanstalk
    • Install On Heroku
    • Java
    • Kinesis Stream
    • Kubernetes Fluentd
    • Monitoring by Prometheus
    • Monitoring by Rest Api
    • Nodejs
    • Performance Tuning Multi Process
    • Performance Tuning Single Process
    • Perl
    • Php
    • Python
    • Quickstart
    • Raspberrypi Cloud Data Logger
    • Recipe Apache Logs To Elasticsearch
    • Recipe Apache Logs To Mongo
    • Recipe Apache Logs To S3
    • Recipe Apache Logs To Treasure Data
    • Recipe Cloudstack To Mongodb
    • Recipe Csv To Elasticsearch
    • Recipe Csv To Mongo
    • Recipe Csv To S3
    • Recipe Csv To Treasure Data
    • Recipe Http Rest Api To Elasticsearch
    • 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
  • fluentd
  • Important options
  • Set via configuration file
  • fluent-cat
  • example

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  1. Deployment

Command Line Option

This article describes built-in commands and its options

fluentd

Invoke fluentd. Here is supported options:

Usage: fluentd [options]
    -s, --setup [DIR=/etc/fluent]    install sample configuration file to the directory`
    -c, --config PATH                config file path (default: /etc/fluent/fluent.conf)
        --dry-run                    Check fluentd setup is correct or not
    -p, --plugin DIR                 add plugin directory
    -I PATH                          add library path
    -r NAME                          load library
    -d, --daemon PIDFILE             daemonize fluent process
        --no-supervisor              run without fluent supervisor
        --user USER                  change user
        --group GROUP                change group
    -o, --log PATH                   log file path
    -i CONFIG_STRING,                inline config which is appended to the config file on-fly
        --inline-config
        --emit-error-log-interval SECONDS
                                     suppress interval seconds of emit error logs
        --suppress-repeated-stacktrace [VALUE]
                                     suppress repeated stacktrace
        --without-source             invoke a fluentd without input plugins
        --use-v1-config              Use v1 configuration format (default)
        --use-v0-config              Use v0 configuration format
    -v, --verbose                    increase verbose level (-v: debug, -vv: trace)
    -q, --quiet                      decrease verbose level (-q: warn, -qq: error)
        --suppress-config-dump       suppress config dumping when fluentd starts
    -g, --gemfile GEMFILE            Gemfile path
    -G, --gem-path GEM_INSTALL_PATH  Gemfile install path (default: $(dirname $gemfile)/vendor/bundle)

Important options

--suppress-config-dump

Fluentd starts without configuration dump. If you don't want to show configuration in fluentd logs, e.g. don't show private keys, this options is useful.

--suppress-repeated-stacktrace

If set true, suppress stacktrace in fluentd logs. Since v0.12, this option is true by default.

--without-source

Fluentd starts without input plugins. This option is useful for flushing buffers with no new incoming events.

-i, --inline-config

If you use fluentd on XaaS which doesn't support persistent disks, this option is useful.

--no-supervisor

If you want to use your supervisor tools, this option avoids double supervisor.

Set via configuration file

fluent-cat

Send event to fluentd's in_forward/in_unix plugin. This is useful for testing.

Usage: fluent-cat [options] <tag>
    -p, --port PORT                  fluent tcp port (default: 24224)
    -h, --host HOST                  fluent host (default: 127.0.0.1)
    -u, --unix                       use unix socket instead of tcp
    -s, --socket PATH                unix socket path (default: /var/run/fluent/fluent.sock)
    -f, --format FORMAT              input format (default: json)
        --json                       same as: -f json
        --msgpack                    same as: -f msgpack
        --none                       same as: -f none
        --message-key KEY            key field for none format (default: message)

example

Send json message with debug.log tag to local fluentd:

% echo '{"message":"hello"}' | fluent-cat debug.log

Send to other machine:

% echo '{"message":"hello"}' | fluent-cat debug.log --host testserver --port 24225
PreviousFluentd UINextContainer Deployment

Last updated 5 years ago

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Several options could be set via <system> directive configuration file. See .

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.

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