k8s的ETCD metric的问题

在k8s的master节点上安装metricbeat，/etc/metricbeat/modules.d/etcd.yml的内容：

# Module: etcd

# Docs: https://www.elastic.co/guide/e ... .html

- module: etcd

  metricsets:

    - leader

    - self

    - store

    - metrics

  period: 10s

  hosts: ["127.0.0.1:2379"]

  #username: "user"

  #password: "secret"

metricbeat -e命令里有错误信息：

module/wrapper.go:244   Error fetching data for metricset etcd.self: error in http fetch: error making http request: Get http://127.0.0.1:2379/v2/stats/self: net/http: HTTP/1.x transport connection broken: malformed HTTP response "\x15\x03\x01\x00\x02\x02"

 curl http://192.168.80.5:2379/v2/members的输出结果也为空。
 
请教如何处理？谢谢。