Kubernetes v1.36: Tiered Memory Protection with Memory QoS

Kubernetes v1.36 introduces tiered memory protection by QoS class via cgroup v2.

• •memoryReservationPolicy with TieredReservation for opt-in memory reservation
• •Guaranteed Pods: hard protection (memory.min), Burstable: soft (memory.low), BestEffort: none
• •Reduces hard reservation overhead vs v1.27 by using soft protection for Burstable workloads
• •Metrics kubelet_memory_qos_node_memory_min_bytes and _low_bytes support capacity planning
• •Kernel 5.9+ needed to avoid memory.high throttling livelock issues

This summary was automatically generated by AI based on the original article and may not be fully accurate.