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Telegraf - A native agent for InfluxDB Circle CI

Telegraf is an agent written in Go for collecting metrics from the system it's running on, or from other services, and writing them into InfluxDB.

Design goals are to have a minimal memory footprint with a plugin system so that developers in the community can easily add support for collecting metrics from well known services (like Hadoop, Postgres, or Redis) and third party APIs (like Mailchimp, AWS CloudWatch, or Google Analytics).

We'll eagerly accept pull requests for new plugins and will manage the set of plugins that Telegraf supports. See the contributing guide for instructions on writing new plugins.


Due to a breaking change to the InfluxDB integer line-protocol, there are some InfluxDB compatibility requirements:

  • InfluxDB 0.9.3+ requires Telegraf 0.1.5+
  • InfluxDB 0.9.2 and prior requires Telegraf 0.1.4

Linux deb and rpm packages:



Package instructions:
  • Telegraf binary is installed in /opt/telegraf/telegraf
  • Telegraf daemon configuration file is in /etc/opt/telegraf/telegraf.conf
  • On sysv systems, the telegraf daemon can be controlled via service telegraf [action]
  • On systemd systems (such as Ubuntu 15+), the telegraf daemon can be controlled via systemctl [action] telegraf

Linux binaries:


Binary instructions:

These are standalone binaries that can be unpacked and executed on any linux system. They can be unpacked and renamed in a location such as /usr/local/bin for convenience. A config file will need to be generated, see "How to use it" below.

OSX via Homebrew:

brew update
brew install telegraf

From Source:

Telegraf manages dependencies via godep, which gets installed via the Makefile if you don't have it already. You also must build with golang version 1.4+

  1. Install Go
  2. Setup your GOPATH
  3. run go get
  4. cd $GOPATH/src/
  5. run make

How to use it:

  • Run telegraf -sample-config > telegraf.conf to create an initial configuration
  • Edit the configuration to match your needs
  • Run telegraf -config telegraf.conf -test to output one full measurement sample to STDOUT
  • Run telegraf -config telegraf.conf to gather and send metrics to configured outputs.
  • Run telegraf -config telegraf.conf -filter system:swap to enable only the system & swap plugins defined in the config.

Telegraf Options

Telegraf has a few options you can configure under the agent section of the config.

  • hostname: The hostname is passed as a tag. By default this will be the value retured by hostname on the machine running Telegraf. You can override that value here.
  • interval: How ofter to gather metrics. Uses a simple number + unit parser, ie "10s" for 10 seconds or "5m" for 5 minutes.
  • debug: Set to true to gather and send metrics to STDOUT as well as InfluxDB.

Plugin Options

There are 5 configuration options that are configurable per plugin:

  • pass: An array of strings that is used to filter metrics generated by the current plugin. Each string in the array is tested as a prefix against metric names and if it matches, the metric is emitted.
  • drop: The inverse of pass, if a metric name matches, it is not emitted.
  • tagpass: (added in 0.1.5) tag names and arrays of strings that are used to filter metrics by the current plugin. Each string in the array is tested as an exact match against the tag name, and if it matches the metric is emitted.
  • tagdrop: (added in 0.1.5) The inverse of tagpass. If a tag matches, the metric is not emitted. This is tested on metrics that have passed the tagpass test.
  • interval: How often to gather this metric. Normal plugins use a single global interval, but if one particular plugin should be run less or more often, you can configure that here.

Plugin Configuration Examples

This is a full working config that will output CPU data to an InfluxDB instance at, tagging measurements with dc="denver-1". It will output measurements at a 10s interval and will collect totalcpu & percpu data.

    dc = "denver-1"

    interval = "10s"

    url = "" # required.
    database = "telegraf" # required.

    percpu = true
    totalcpu = true

Below is how to configure tagpass and tagdrop parameters (added in 0.1.5)

# Don't collect CPU data for cpu6 & cpu7
    cpu = [ "cpu6", "cpu7" ]

    # tagpass conditions are OR, not AND.
    # If the (filesystem is ext4 or xfs) OR (the path is /opt or /home)
    # then the metric passes
    fstype = [ "ext4", "xfs" ]
    path = [ "/opt", "/home" ]

Supported Plugins

You can view usage instructions for each plugin by running telegraf -usage <pluginname>

Telegraf currently has support for collecting metrics from

  • apache
  • disque
  • elasticsearch
  • exec (generic JSON-emitting executable plugin)
  • haproxy
  • httpjson (generic JSON-emitting http service plugin)
  • kafka_consumer
  • leofs
  • lustre2
  • memcached
  • mongodb
  • mysql
  • nginx
  • ping
  • postgresql
  • prometheus
  • rabbitmq
  • redis
  • rethinkdb
  • system
    • cpu
    • mem
    • io
    • net
    • disk
    • swap

We'll be adding support for many more over the coming months. Read on if you want to add support for another service or third-party API.

Output options

Telegraf also supports specifying multiple output sinks to send data to, configuring each output sink is different, but examples can be found by running telegraf -sample-config

Supported Outputs

  • influxdb
  • kafka
  • datadog


Please see the contributing guide for details on contributing a plugin or output to Telegraf


The plugin-driven server agent for reporting metrics into InfluxDB.







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