Ensure that the –terminated-pod-gc-threshold argument is set as appropriate

Property
Language
Severity

Description#

The Kubernetes Controller Manager is missing the –terminated-pod-gc-threshold argument, which controls the automatic cleanup of terminated pods. Without this setting, old pod resources may accumulate unnecessarily.

Impact#

Failure to set an appropriate threshold can lead to resource exhaustion on the control plane due to excessive terminated pods, potentially degrading cluster performance and stability, and increasing management overhead.

Resolution#

Edit the Controller Manager pod specification file /etc/kubernetes/manifests/kube-controller-manager.yaml on the Control Plane node and set the –terminated-pod-gc-threshold to an appropriate threshold.