Merge pull request #48266 from xenolinux/memory-pressure

BZ2100717: Enhances documentation on automatically added node-taints

Author: jeana-redhat

modules/nodes-scheduler-taints-tolerations-about.adoc

@@ -238,6 +238,11 @@ To ensure backward compatibility, the daemon set controller automatically adds t
 
 You can also add arbitrary tolerations to daemon sets.
 
+[NOTE]
+====
+The control plane also adds the `node.kubernetes.io/memory-pressure` toleration on pods that have a QoS class. This is because Kubernetes manages pods in the `Guaranteed` or `Burstable` QoS classes. The new `BestEffort` pods do not get scheduled onto the affected node.
+====
+
 [id="nodes-scheduler-taints-tolerations-about-taintBasedEvictions_{context}"]
 == Understanding evicting pods by condition (taint-based evictions)