Hi qy.product,
Welcome to the Microsoft Q&A Platform! Thank you for asking your question here.
Here are some recommended methods and tools:
Azure Monitor: Set up alerts for key metrics like Byte Hit Ratio, Request Count, Response Size, and Total Latency. This helps you detect issues early and respond quickly.
Diagnostic Logs: Enable diagnostic logs for your CDN endpoint. These logs provide detailed information about every request that the CDN receives1. You can export these logs to Azure Storage, Event Hubs, or Log Analytics for further analysis.
Azure Resource Health: Use Azure Resource Health to monitor the health of your CDN resources. It provides actionable guidance to troubleshoot problems and can alert you to any ongoing issues with the CDN service.
Refer:
Monitoring, metrics, and raw logs for Azure CDN | Microsoft Learn
Diagnostic logs - Azure Content Delivery Network | Microsoft Learn
Monitor the health of Azure Content Delivery Network resources | Microsoft Learn
Please don’t forget to close the thread by clicking "Accept the answer" wherever the information provided helps you, as this can be beneficial to other community members.