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Monitoring Disk I/O on Linux with the Node Exporter

Monitoring disk I/O on a Linux system is crucial for every system administrator. When performing basic system troubleshooting, you want to have a complete overview of every single metric on your system : CPU, memory but more importantly a great view over the disk I/O usage. In this tutorial, we are going to build another dashboard that monitors the disk I/O usage on our Linux system, as well as filesystems and even inodes usage. We are going to use Prometheus to track those metrics, but we will see that it is not the only way to do it on a Linux system.