无法启动赞助人

Question

我正在尝试使用Patroni为Postgresql配置高可用性群集。我点击了以下链接：

https://www.linode.com/docs/databases/postgresql/create-a-highly-available-postgresql-cluster-using-patroni-and-haproxy/

我已经按照Postgresql安装中第4步中的描述创建了符号链接。但是我的赞助人服务无法启动，并出现以下错误：

Traceback (most recent call last):
  File "/usr/local/bin/patroni", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python2.7/dist-packages/patroni/__init__.py", line 169, in main
    return patroni_main()
  File "/usr/local/lib/python2.7/dist-packages/patroni/__init__.py", line 157, in patroni_main
    patroni = Patroni()
  File "/usr/local/lib/python2.7/dist-packages/patroni/__init__.py", line 28, in __init__
    self.dcs = get_dcs(self.config)
  File "/usr/local/lib/python2.7/dist-packages/patroni/dcs/__init__.py", line 95, in get_dcs
    Available implementations: """ + ', '.join(available_implementations))
patroni.exceptions.PatroniException: 'Can not find suitable configuration of distributed configuration store\nAvailable implementations: '

您能帮我解决上述问题吗？

谢谢。