This file contains: cluster API server endpoint, user certificates, tokens, or kubeconfigs →sensitive credentials.
Exact extract (Kubernetes Docs – Configure Access to Clusters):
“By default, kubectl looks for a file named config in the $HOME/.kube directory. This file contains configuration information including user credentials.”
Other options clarified:
A: /etc/kubernetes/ exists on nodes (control plane) not client machines.
C: /opt/kubernetes/secrets/ is not a standard path.
D: $HOME/.config/kubernetes/ is not where kubeconfig is stored by default.
[References:, Kubernetes Docs — Configure Access to Clusters: https://kubernetes.io/docs/concepts/configuration/organize-cluster-access-kubeconfig/, ]
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