Ensure the --protect-kernel-defaults argument is set to True
Error: The --protect-kernel-defaults argument is not set to True
Bridgecrew Policy ID: BC_K8S_100
Checkov Check ID: CKV_K8S_144
Severity: LOW
The --protect-kernel-defaults argument is not set to True
Description
Protect tuned kernel parameters from overriding kubelet default kernel parameter values.
Kernel parameters are usually tuned and hardened by the system administrators before putting the systems into production. These parameters protect the kernel and the system. Your kubelet kernel defaults that rely on such parameters should be appropriately set to match the desired secured system state. Ignoring this could potentially lead to running pods with undesired kernel behavior.
Fix - Buildtime
Kubernetes
- Kind: Pod
apiVersion: v1
kind: Pod
metadata:
creationTimestamp: null
labels:
component: kubelet
tier: control-plane
name: kubelet
namespace: kube-system
spec:
containers:
- command:
+ - kubelet
+ - --protect-kernel-defaults=true
image: gcr.io/google_containers/kubelet-amd64:v1.6.0
...
Updated 10 months ago