kubectl exec -it etcd-master -n kube-system /bin/bashkubectl exec [POD] [COMMAND]

[root@node1 ~]# kubectl exec -it  etcd-master  -n kube-system /bin/bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl kubectl exec [POD] -- [COMMAND] instead.
OCI runtime exec failed: exec failed: container_linux.go:348: starting container process caused "exec: \"/bin/bash\": stat /bin/bash: no such file or directory": unknown
command terminated with exit code 126