Etcdctl backup - permission denied exception

General Discussions
#1

Cluster information:

Kubernetes version: 1.18
Cloud being used: bare-metal
Installation method: kubeadm
Host OS: Ubuntu 18.04
CNI and version: weave-net
CRI and version: docker

Hello I am trying to backup etcd cluster using the following command:

ETCDCTL_API=3 etcdctl --cacert="/etc/kubernetes/pki/etcd/ca.crt" --cert="/etc/kubernetes/pki/etcd/server.crt" --key="/etc/kubernetes/pki/etcd/server.key" --endpoints=“https://127.0.0.1:2379” snapshot save /var/lib/etcd/backup.db
but I am getting
Error: open /etc/kubernetes/pki/etcd/server.crt: permission denied

I have also tried with sudo but no progress. Any help would be greatly appreciated.

Thanks,
Anil

#2

It works for me when the etcdctl version installed on my master ndode matches the etcdctl version of the etcd-master pod