This tutorial describes how to install the Telegraf plugin as a data-collection interface with InfluxDB 1.7 and Docker. It covers preparing Telegraf for InfluxDB and Docker, creating a configuration file for Telegraf and Docker, modifying the Telegraf configuration file, running the Telegraf container on Docker, isolating the Telegraf user ID, and ensuring correct permissions. The tutorial also explains how to use Grafana as a dashboarding tool to visualize metrics collected by Telegraf.