Limits, Requests, QoS, PriorityClasses: Demystifying Scheduling in K8s!
summary
Explains Kubernetes scheduling and resource controls—limits, requests, QoS classes, and PriorityClasses—showing how CPU and memory shortages, CPU limits, and heavy RAM usage affect pods and performance. Uses demos that stress clusters to reveal what Kubernetes does under resource pressure and why you should set these fields correctly for production.
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chapters (14)
- 0:00Introduction
- 2:10Kubernetes overview
- 5:20CPU limits vs requests demo
- 8:48CPU limits for sensitive apps
- 15:12Throttling and latency
- 18:22Limits on incompressible resources
- 20:49Requests in pod scheduling
- 25:07Bad requests config effects
- 26:30CPU shares and requests
- 33:11QoS classes explained
- 36:59Eviction and resource handling
- 37:42PriorityClasses for app priority
- 40:52Best practices summary
- 42:37Q&A
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