cAdvisor is an open-source resource usage collector for containers in a cluster. It is used in Kubernetes to support containers natively while operating on a per-node basis.

It auto-discovers all containers in a specific node and collects CPU, memory, filesystem, and network usage stats. cAdvisor also provides useful metrics like overall machine usage by analyzing the ‘root’ container on your machine.

BY Best Interview Question ON 26 Jan 2020