- 📖🕓 ≈ 5 min - In the last articles you have already been given a small introduction to the open source tool Grafana. It was also reported how to install and set up Grafana locally under Ubuntu. Today we are installing a small database for your applications on a Linux distribution and writing the first sample data, which we receive via MQTT, into the database. We then visualize the stored data in Grafana.For this purpose, InfluxDB is used in connection