What is pod eviction and what is it used for?

Evacuation of pods in Kubernetes is the process of removing pods from a node. It is initiated by the Kubelet when the node experiences resource shortages (such as CPU, memory, or disk space). Evacuation helps free up resources on the problematic node to ensure the stable operation of the remaining pods and prevent further performance degradation or failures. This is an important mechanism for maintaining cluster health and ensuring application availability.