TANGO-grafana: an online diagnostic tool to assist in the analysis of interconnected problems difficult to debug in the context of the Square Kilometre Array (SKA) telescope project

The selected solution for monitoring the SKA Minimum Viable Product (MVP) Prototype Integration (SKAMPI) is Prometheus. Starting from a study on the modifiability aspects of it, the Grafana project emerged as an important tool for displaying data in order to make specific reasoning and debugging of particular aspect of SKAMPI. Its plugin architecture easily allow to add new data sources like prometheus but the TANGO related data sources has been added as well. The main concept of grafana is the dashboard, which enable to create real analysis. In this paper four example analysis are presented which take advantage of four different datasources and a variety of different panel (widget) for reasoning on archiving data, monitoring data, state of the system and general health of it.