Time series based monitoring in very heterogeneous environments

For the last few years, I have built a centralized monitoring system based on Prometheus that gathers various metrics across my whole private fleet of servers. Since writing Prometheus exporters is rather simple, I have written some of them myself: lywsd03mmc-exporter , a Prometheus exporter for the LYWSD03MMC BLE thermometer which monitors my flat’s temperature and air humidity (as well as when…