Assumption:
- namespace "default"
Go to directory of etcd-operator/example/tls/certs/: https://github.com/coreos/etcd-operator/tree/master/example/tls/certs
create secret:
kubectl create secret generic etcd-peer-tls --from-file=peer-ca.crt --from-file=peer.crt --from-file=peer.key
kubectl create secret generic etcd-client-tls --from-file=etcd-client-ca.crt --from-file=etcd-client.crt --from-file=etcd-client.key