etcdclient for using on kind deployments (full credit to maulioin) https://mauilion.dev/posts/etcdclient/

etcdclient.yml

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    component: etcdclient
    tier: debug
  name: etcdclient
  namespace: default
spec:
  nodeName: kind-control-plane
  containers:
  - command:
    - sleep
    - 9999d
    image: k8s.gcr.io/etcd:3.3.10
    imagePullPolicy: IfNotPresent
    name: etcdclient
    resources: {}
    volumeMounts:
    - mountPath: /etc/kubernetes/pki/etcd
      name: etcd-certs
      readOnly: true
    env:
    - name: ETCDCTL_API
      value: "3"
    - name: ETCDCTL_CACERT
      value: /etc/kubernetes/pki/etcd/ca.crt
    - name: ETCDCTL_CERT
      value: /etc/kubernetes/pki/etcd/healthcheck-client.crt
    - name: ETCDCTL_KEY
      value: /etc/kubernetes/pki/etcd/healthcheck-client.key
    - name: ETCDCTL_ENDPOINTS
      value: "https://127.0.0.1:2379"
    - name: ETCDCTL_CLUSTER
      value: "true"
  hostNetwork: true
  volumes:
  - hostPath:
      path: /etc/kubernetes/pki/etcd
      type: DirectoryOrCreate
    name: etcd-certs