​​Tools for collecting metrics and logs from CoreDNS

This text discusses the monitoring and logging of CoreDNS servers in a Kubernetes cluster. It explains how to collect and visualize CoreDNS metrics using the prometheus plugin, which exposes metrics in the OpenMetrics format. The text also demonstrates how to use Grafana for visualizing and alerting on these metrics. Additionally, it explores CoreDNS logging, including query logging, plugin activity logs, and CoreDNS status logs. Finally, it suggests using a logging agent or sidecar container for advanced log processing and analysis.