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Lukasz Jagiello e3e6fa4f1d
Sudo support for ceph/varnish plugin
In many default installations ceph and varnish binaries require root
permissions or specific user permissions to actually gather metrics.

Although it's possible to instrumented system configuration to either
run telegraf with root privileges or share the same user/permissions as
measured software it's not a default setup.

In my opinion ability to run binary with `sudo` makes entire setup
simpler without additional interaction.

My changes allow to use configuration like:
```
binary = "/usr/bin/sudo /usr/bin/varnishstat"
ceph_binary = "/usr/bin/sudo /usr/bin/ceph"
```

With a proper sudo configuration it will simplify amount of changes
needed to collect metrics.

I've also changed type of varnish metrics. It was `int` but in varnish source
code we can find all metrics are actually uint64
(https://github.com/varnishcache/varnish-cache/blob/master/include/tbl/vsc_f_main.h)

I hit that issue with some metrics:
```
~# varnishstat -1 | grep -i MAIN.n_objectcore
MAIN.n_objectcore      18446744073709550877          .   objectcore structs made
```
2016-05-25 23:49:42 +00:00
.github github issue and pr templates 2016-05-19 12:11:19 +01:00
agent Utilize timeout in net_response plugin. 2016-05-23 15:59:23 +01:00
cmd/telegraf Change Version->version for consistency w/ influxdb 2016-05-10 14:18:55 -07:00
docs value parser: doc & string handling 2016-05-02 12:17:20 -06:00
etc update changelog & etc/telegraf.conf 2016-05-24 15:34:56 +01:00
internal Consolidate AWS credentials (#1208) 2016-05-25 12:30:39 +01:00
plugins Sudo support for ceph/varnish plugin 2016-05-25 23:49:42 +00:00
scripts fix telegraf service (#1252) 2016-05-24 15:14:58 +01:00
testutil httpjson test real response from issue #729 2016-02-23 09:34:01 -07:00
.gitattributes add gitattributes file 2016-04-22 11:42:22 -06:00
.gitignore Added a `build.py` script for compiling and packaging. Added post and pre install scripts to handle installation and upgrades in a cleaner way. Minor fixes to the init script and service unit file. 2016-01-08 15:28:33 -06:00
CHANGELOG.md http_response plugin: Add SSL config options 2016-05-25 13:44:36 +01:00
CONTRIBUTING.md Update all readme instances of data formats 2016-04-05 14:42:20 -06:00
Godeps update gopsutil to commit with timeout support 2016-05-21 21:00:51 +01:00
Godeps_windows Godeps: update paho mqtt client dep 2016-04-07 17:32:28 -06:00
LICENSE Initial commit 2015-04-01 09:28:44 -07:00
Makefile Change Version->version for consistency w/ influxdb 2016-05-10 14:18:55 -07:00
README.md Add input plugin for rollbar service. (#1247) 2016-05-24 15:32:42 +01:00
accumulator.go Create public models for telegraf metrics, accumlator, plugins 2016-01-27 15:42:50 -07:00
circle.yml Update build to go 1.6.2 2016-04-28 11:41:16 -06:00
input.go Flush based on buffer size rather than time 2016-02-16 22:25:22 -07:00
metric.go Implementing generic parser plugins and documentation 2016-02-08 21:08:44 -07:00
metric_test.go Implementing generic parser plugins and documentation 2016-02-08 21:08:44 -07:00
output.go Throughout telegraf, use telegraf.Metric rather than client.Point 2016-01-27 23:47:32 -07:00

README.md

Telegraf Circle CI Docker pulls

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 or other outputs.

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).

New input and output plugins are designed to be easy to contribute, we'll eagerly accept pull requests 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:

Latest (arm):

Package Instructions:
  • Telegraf binary is installed in /usr/bin/telegraf
  • Telegraf daemon configuration file is in /etc/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

yum/apt Repositories:

There is a yum/apt repo available for the whole InfluxData stack, see here for instructions on setting up the repo. Once it is configured, you will be able to use this repo to install & update telegraf.

Linux tarballs:

Latest:

FreeBSD tarball:

Latest:

Ansible Role:

Ansible role: https://github.com/rossmcdonald/telegraf

OSX via Homebrew:

brew update
brew install telegraf

Windows Binaries (EXPERIMENTAL)

Latest:

From Source:

Telegraf manages dependencies via gdm, which gets installed via the Makefile if you don't have it already. You also must build with golang version 1.5+.

  1. Install Go
  2. Setup your GOPATH
  3. Run go get github.com/influxdata/telegraf
  4. Run cd $GOPATH/src/github.com/influxdata/telegraf
  5. Run make

How to use it:

$ telegraf -help
Telegraf, The plugin-driven server agent for collecting and reporting metrics.

Usage:

  telegraf <flags>

The flags are:

  -config <file>     configuration file to load
  -test              gather metrics once, print them to stdout, and exit
  -sample-config     print out full sample configuration to stdout
  -config-directory  directory containing additional *.conf files
  -input-filter      filter the input plugins to enable, separator is :
  -output-filter     filter the output plugins to enable, separator is :
  -usage             print usage for a plugin, ie, 'telegraf -usage mysql'
  -debug             print metrics as they're generated to stdout
  -quiet             run in quiet mode
  -version           print the version to stdout

Examples:

  # generate a telegraf config file:
  telegraf -sample-config > telegraf.conf

  # generate config with only cpu input & influxdb output plugins defined
  telegraf -sample-config -input-filter cpu -output-filter influxdb

  # run a single telegraf collection, outputing metrics to stdout
  telegraf -config telegraf.conf -test

  # run telegraf with all plugins defined in config file
  telegraf -config telegraf.conf

  # run telegraf, enabling the cpu & memory input, and influxdb output plugins
  telegraf -config telegraf.conf -input-filter cpu:mem -output-filter influxdb

Configuration

See the configuration guide for a rundown of the more advanced configuration options.

Supported Input Plugins

Telegraf currently has support for collecting metrics from many sources. For more information on each, please look at the directory of the same name in plugins/inputs.

Currently implemented sources:

Telegraf can also collect metrics via the following service plugins:

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.

Supported Output Plugins

Contributing

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