The severity is assessed as LOW because the issue stems from a user configuration mistake rather than a security vulnerability. Real-world exploitability is minimal, but users should clean up to avoid operational issues.
The advisory discusses the potential misconfiguration and overlap between kubeadm and k3d cluster setups, leading to undefined behavior. Users who have mistakenly set up both might face inconsistencies or failures.
Affected Systems
- Kubernetes clusters using both kubeadm and k3d
Affected Versions: Not version-specific; affects configurations where both tools are improperly used in tandem
Remediation
- Run `kubeadm reset` to clean up the remnants of a previous kubeadm setup.
- Ensure no residual Kubernetes files from kubeadm exist, particularly in `/etc/kubernetes`, `/var/lib/etcd` and user `$HOME/.kube/config`.
- Reinitialize your cluster with just `k3d cluster create ...` for consistency.
Stack Impact
Does not affect nginx, docker, linux kernel, openssh, curl, openssl, python directly. This impacts Kubernetes setup processes and homelab components using kubeadm or k3d.