295 lines
8.1 KiB
Markdown
295 lines
8.1 KiB
Markdown
# Telegraf - A native agent for InfluxDB [](https://circleci.com/gh/influxdb/telegraf)
|
|
|
|
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](CONTRIBUTING.md) 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 [gdm](https://github.com/sparrc/gdm),
|
|
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](https://golang.org/doc/install)
|
|
2. [Setup your GOPATH](https://golang.org/doc/code.html#GOPATH)
|
|
3. Run `go get github.com/influxdb/telegraf`
|
|
4. Run `cd $GOPATH/src/github.com/influxdb/telegraf`
|
|
5. 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 packages `sudo -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`.
|
|
|
|
```toml
|
|
[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
|
|
|
|
```toml
|
|
[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
|
|
|
|
```toml
|
|
# 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:
|
|
|
|
```toml
|
|
[[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)
|
|
* influxdb
|
|
* 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
|
|
|
|
```toml
|
|
[[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](CONTRIBUTING.md)
|
|
for details on contributing a plugin or output to Telegraf.
|