我正在尝试使用来引导手动云juju bootstrap manual/x.x.x.x mycloud，但我一直收到以下警告，半小时后又出现以下错误。我的公共 ssh 密钥已获得授权，因此这不是问题：
2018-01-16 11:51:11 WARNING juju.mongo open.go:159 mongodb connection failed, will retry: dial tcp 127.0.0.1:37017: getsockopt: connection refused
2018-01-16 12:26:36 WARNING juju.replicaset replicaset.go:122 Initiate: fetching replication status failed: cannot get replica set status: no replset config has been received
是否有我忘记更改的防火墙设置？