RMongo：使用端口转发连接到mongoDB

Question

我使用端口转发连接到mongodb服务器，如下所示：

ssh -i key.pem -Nf -L 27018:xx.xxx.xxx.xxx:27017 ubuntu@xx.xxx.xxx.xxx
mongo -u user -p pass --authenticationDatabase "db" --port 27018

然后我运行R连接并查询数据库：

library(RMongo)
mg1 <- mongoDbConnect(dbName = 'db', host = 'xx.xxx.xxx.xxx', port = 27018)
auth <- dbAuthenticate(rmongo.object = mg1, username = 'user', password = 'pass')

这在身份验证时给我一个错误：

Error in .jcall(rmongo.object@javaMongo, "Z", "dbAuthenticate", username,  : 
  com.mongodb.MongoException$Network: IOException authenticating the connection

没有端口转发，我的凭据有效：

library(RMongo)
mg1 <- mongoDbConnect(dbName = 'db', host = 'xx.xxx.xxx.xxx', port = 27017)
auth <- dbAuthenticate(rmongo.object = mg1, username = 'user', password = 'pass')

如何在mongoDbconnect设置端口？

谢谢！

Answer 1

好的，这很有效。无需放置主机，因为现在我们已映射到localhost：

library(RMongo)
mg1 <- mongoDbConnect(dbName = 'db', host = 'localhost', port = '27018')
auth <- dbAuthenticate(rmongo.object = mg1, username = 'user', password = 'pass')