OOMKilled in Kubernetes (Requests vs Limits).

OOMKilled (Out of Memory) occurs when a container exceeds its defined memory limit, causing the Linux kernel to kill the process.

Requests guarantee a minimum amount of resources (used by the scheduler to place the Pod). Limits define a hard maximum. If a container exceeds CPU limits, it is throttled. If it exceeds Memory limits, it is terminated (OOMKilled). Setting limits too close to requests without profiling leads to unstable deployments.