e3c8a1131a
The "two pool, one metic" test was only passing because of previous calls to Gather() had already populated the values. |
||
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Godeps | ||
cmd/telegraf | ||
etc | ||
internal | ||
outputs | ||
plugins | ||
scripts | ||
testutil | ||
.gitignore | ||
CHANGELOG.md | ||
CONTRIBUTING.md | ||
LICENSE | ||
LICENSE_OF_DEPENDENCIES.md | ||
Makefile | ||
README.md | ||
accumulator.go | ||
agent.go | ||
agent_test.go | ||
circle.yml |
README.md
Telegraf - A native agent for InfluxDB
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.
Installation:
Linux deb and rpm packages:
Latest:
- http://get.influxdb.org/telegraf/telegraf_0.2.4_amd64.deb
- http://get.influxdb.org/telegraf/telegraf-0.2.4-1.x86_64.rpm
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:
Latest:
- http://get.influxdb.org/telegraf/telegraf_linux_amd64_0.2.4.tar.gz
- http://get.influxdb.org/telegraf/telegraf_linux_386_0.2.4.tar.gz
- http://get.influxdb.org/telegraf/telegraf_linux_arm_0.2.4.tar.gz
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+.
- Install Go
- Setup your GOPATH
- Run
go get github.com/influxdb/telegraf
- Run
cd $GOPATH/src/github.com/influxdb/telegraf
- Run
make
How to use it:
- Run
telegraf -sample-config > telegraf.conf
to create an initial configuration. - Or run
telegraf -sample-config -filter cpu:mem -outputfilter influxdb > telegraf.conf
. to create a config file with only CPU and memory plugins defined, and InfluxDB output defined. - Edit the configuration to match your needs.
- Run
telegraf -config telegraf.conf -test
to output one full measurement sample to STDOUT. NOTE: you may want to run as the telegraf user if you are using the linux packagessudo -u telegraf telegraf -config telegraf.conf -test
- Run
telegraf -config telegraf.conf
to gather and send metrics to configured outputs. - Run
telegraf -config telegraf.conf -filter system:swap
. to run telegraf with 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 returned by
hostname
on the machine running Telegraf. You can override that value here. - interval: How often to gather metrics. Uses a simple number + unit parser, e.g. "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 glob match 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: tag names and arrays of strings that are used to filter metrics by the current plugin. Each string in the array is tested as a glob match against the tag name, and if it matches the metric is emitted.
- tagdrop: 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 192.168.59.103:8086, tagging measurements with dc="denver-1". It will output
measurements at a 10s interval and will collect per-cpu data, dropping any
measurements which begin with cpu_time
.
[tags]
dc = "denver-1"
[agent]
interval = "10s"
# OUTPUTS
[outputs]
[[outputs.influxdb]]
url = "http://192.168.59.103:8086" # required.
database = "telegraf" # required.
precision = "s"
# PLUGINS
[plugins]
[[plugins.cpu]]
percpu = true
totalcpu = false
drop = ["cpu_time*"]
Below is how to configure tagpass
and tagdrop
parameters
[plugins]
[[plugins.cpu]]
percpu = true
totalcpu = false
drop = ["cpu_time"]
# Don't collect CPU data for cpu6 & cpu7
[plugins.cpu.tagdrop]
cpu = [ "cpu6", "cpu7" ]
[[plugins.disk]]
[plugins.disk.tagpass]
# 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" ]
# Globs can also be used on the tag values
path = [ "/opt", "/home*" ]
Below is how to configure pass
and drop
parameters
# Drop all metrics for guest CPU usage
[[plugins.cpu]]
drop = [ "cpu_usage_guest" ]
# Only store inode related metrics for disks
[[plugins.disk]]
pass = [ "disk_inodes*" ]
Additional plugins (or outputs) of the same type can be specified, just define more instances in the config file:
[[plugins.cpu]]
percpu = false
totalcpu = true
[[plugins.cpu]]
percpu = true
totalcpu = false
drop = ["cpu_time*"]
Supported Plugins
You can view usage instructions for each plugin by running
telegraf -usage <pluginname>
.
Telegraf currently has support for collecting metrics from:
- aerospike
- apache
- bcache
- disque
- elasticsearch
- exec (generic JSON-emitting executable plugin)
- haproxy
- httpjson (generic JSON-emitting http service plugin)
- jolokia (remote JMX with JSON over HTTP)
- leofs
- lustre2
- mailchimp
- memcached
- mongodb
- mysql
- nginx
- phpfpm
- ping
- postgresql
- procstat
- prometheus
- puppetagent
- rabbitmq
- redis
- rethinkdb
- twemproxy
- zfs
- zookeeper
- system
- cpu
- mem
- io
- net
- netstat
- disk
- swap
Supported Service Plugins
Telegraf can collect metrics via the following services:
- statsd
- kafka_consumer
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
.
Outputs also support the same configurable options as plugins (pass, drop, tagpass, tagdrop), added in 0.2.4
[[outputs.influxdb]]
urls = [ "http://localhost:8086" ]
database = "telegraf"
precision = "s"
# Drop all measurements that start with "aerospike"
drop = ["aerospike*"]
[[outputs.influxdb]]
urls = [ "http://localhost:8086" ]
database = "telegraf-aerospike-data"
precision = "s"
# Only accept aerospike data:
pass = ["aerospike*"]
[[outputs.influxdb]]
urls = [ "http://localhost:8086" ]
database = "telegraf-cpu0-data"
precision = "s"
# Only store measurements where the tag "cpu" matches the value "cpu0"
[outputs.influxdb.tagpass]
cpu = ["cpu0"]
Supported Outputs
- influxdb
- nsq
- kafka
- datadog
- opentsdb
- amqp (rabbitmq)
- mqtt
- librato
- prometheus
- amon
- riemann
Contributing
Please see the contributing guide for details on contributing a plugin or output to Telegraf.