I am totally lost mymind about config:

root@dc3:/etc/cni/net.d# kubectl get configmap -n kube-system
NAME                                                   DATA   AGE
calico-config                                          4      3d18h
cluster-dns                                            2      3d18h
coredns                                                2      3d18h
extension-apiserver-authentication                     6      3d18h
k3s                                                    0      3d18h
k3s-etcd                                               0      3d18h
k3s-etcd-snapshots                                     5      3d15h
kube-apiserver-legacy-service-account-token-tracking   1      3d18h
kube-root-ca.crt                                       1      3d18h
local-path-config                                      4      3d18h
root@dc3:/etc/cni/net.d# kubectl get configmap/k3s -n kube-system
NAME   DATA   AGE
k3s    0      3d18h
root@dc3:/etc/cni/net.d# kubectl get configmap/k3s -n kube-system -o yaml
apiVersion: v1
kind: ConfigMap
metadata:
  annotations:
    <http://control-plane.alpha.kubernetes.io/leader|control-plane.alpha.kubernetes.io/leader>: '{"holderIdentity":"dc3.jike.lan","leaseDurationSeconds":45,"acquireTime":"2023-08-27T12:43:46Z","renewTime":"2023-08-31T07:35:21Z","leaderTransitions":0}'
  creationTimestamp: "2023-08-27T12:43:46Z"
  name: k3s
  namespace: kube-system
  resourceVersion: "1164224"

1. where does the configmap store? 2. why kubectl get configmap/k3s get so little info?