Kubernetesexit code > 0
nodes is forbidden: node cannot modify node
$nodes "node-1" is forbidden: node "node-1" is not allowed to modify node "node-1"
Analysis
A Kubelet on a node is trying to modify its own Node object but lacks permission (Node Restriction admission plugin).
Common Triggers
- ●Kubelet misconfiguration.
- ●Security hardening preventing nodes from modifying their own labels/taints.
Debug Checks
- $Check Kubelet logs.
- $Verify Node Restriction admission plugin is enabled.
Resolution
1
Ensure Kubelet is using the correct credentials.
2
Correct the labels/taints the node is trying to apply.
Metadata
- Tool
- Kubernetes
- Severity
- High
- Tags
- #k8s#security#node