I noticed this graph in my MongoDB Atlas dashboard:
I'm not sure what is causing the increased Disk IOPS and Operations counts... Can I use the oplog to figure out what is causing this massive increase in operations?
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My MongoDB Atlas Operations graph has doubled in the last few hours. How do I go about debugging this?
At this time, you can either build a monitoring integration using the Atlas API or integrate Atlas with Datadog.
Build Monitoring Integrations with Atlas API
You can build a monitoring integration using the Atlas API monitoring and logs endpoints.
Integrate Atlas with Datadog
You can configure Atlas to send metric data about your project to your Datadog dashboards.
Note: Datadog integration is only available on M10+ clusters.
For further your ref here