Fly's Prometheus Metrics

Fly.io has developed a system that transforms container images into fleets of micro-VMs running around the world on their hardware. They have built an infrastructure for collecting, storing, and analyzing metrics to monitor the performance of these VMs. The metrics are collected using Prometheus exporters and stored in Victoria Metrics, a time-series database. Telegraf is used as a swiss-army knife tool that adapts arbitrary inputs to arbitrary output formats. Consul manages the configuration for all these components. This system allows users to monitor their applications running on Fly.io by exporting metrics and adding them to the fly.toml file. The metrics are then collected, stored, and displayed in Grafana Cloud, which provides a user-friendly interface for analyzing performance data.