Access etcd from cluster (setup with kubeadm)

Readme.md

Steps to access etcd from cluster (setup with kubeadm)

Create secret with etcd credentials

cd /etc/kubernetes/pki
kubectl create secret generic etcd-creds --from-file=etcd/ca.crt --from-file=apiserver-etcd-client.crt --from-file=apiserver-etcd-client.key

kubectl describe secret etcd-creds

Create Pod to connect to etcd

cat <<EOF | kubectl apply -f -
apiVersion: v1
kind: Pod
metadata:
  name: connect-etcd
spec:
  containers:
  - name: connect-etcd
    image: gcr.io/etcd-development/etcd:v3.2.7
    command: [ sh ]
    args: [ "-c", "etcdctl --cacert=/etc/ssl/etcd-connect/ca.crt --cert=/etc/ssl/etcd-connect/apiserver-etcd-client.crt --key=/etc/ssl/etcd-connect/apiserver-etcd-client.key --debug=true --endpoints https://ETCD_HOSTNAME:2379 endpoint status && exec tail -f /dev/null" ]
    env:
    - name: ETCDCTL_API
      value: '3'
    volumeMounts:
    - name: etcd-creds
      mountPath: "/etc/ssl/etcd-connect"
      readOnly: true
  volumes:
  - name: etcd-creds
    secret:
      secretName: etcd-creds
EOF