Getting to know Telegraf

I first mentioned Telegraf in the My Monitoring Journey: Cacti, Graphite, Grafana & Chronograf post and then covered its installation and setup in the Installing & Setting up InfluxDB, Telegraf & Grafana post. Let’s now delve a little deeper, shall we?

The good news is that there’s a lot less to Telegraf’s configuration than what there is to InfluxDB so you’ll likely find this post easier to follow than the Getting to know InfluxDB and article.

What is it?

Before diving into configurations, it would be best to first cover off what Telegraf actually is. To quote the Telegraf GitHub page:

Telegraf is an agent written in Go for collecting, processing, aggregating, and writing metrics.

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).

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Installing & Setting up InfluxDB, Telegraf & Grafana

I mentioned these tools in the My Monitoring Journey: Cacti, Graphite, Grafana & Chronograf post and thought now would be a good time to cover their installation and setup. Let’s get started.

Installing InfluxDB & Telegraf

Instructions on how to install all of the TICK stack components can be found here. As I’m running Ubuntu, I’ll need to run these commands:

wget https://dl.influxdata.com/influxdb/releases/influxdb_1.2.4_amd64.deb
sudo dpkg -i influxdb_1.2.4_amd64.deb
wget https://dl.influxdata.com/telegraf/releases/telegraf_1.3.1-1_amd64.deb
sudo dpkg -i telegraf_1.3.1-1_amd64.deb

Note that after running the last command, the Telegraf service automatically starts:

will@ubuntu:/tmp$ sudo dpkg -i telegraf_1.3.1-1_amd64.deb
Selecting previously unselected package telegraf.
(Reading database ... 177117 files and directories currently installed.)
Preparing to unpack telegraf_1.3.1-1_amd64.deb ...
Unpacking telegraf (1.3.1-1) ...
Setting up telegraf (1.3.1-1) ...
Created symlink from /etc/systemd/system/multi-user.target.wants/telegraf.service to /lib/systemd/system/telegraf.service.

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