JAVA J2EE 4 U

 export ETCDCTL_API=3

etcdctl \

  --endpoints="https://etcd1:2379,https://etcd2:2379,https://etcd3:2379" \

  --cacert=/path/to/ca.crt \

  --cert=/path/to/client.crt \

  --key=/path/to/client.key \

  endpoint status --write-out=json