问题
I have these two containers, say backend (CentOs) and mongo. What I would like to have is that from within the backend container I can connect to the mongo database as if it was running locally, $> mongo localhost:27017
Anyway, as far as I understand all this, you can map the port localhost:27017 to mongo:27017 like this
$backend> ssh -L 27017:mongo:27017 root@mongo
However, if I do this I have to provide the root password and after that it logs me into the mongo container and no port forwarding is happening
Background: I want to do this because I'm running a Java program which connects to a Mongo database on localhost and I cannot change that.
回答1:
I found the correct SSH port forwarding command
$> ssh root@mongo -L 27017:localhost:27017 -Nf
Normally the idea with this command is that you map a non-public port - through a public server to you own server/compute.
* `root@mongo` - the public server
* -L <port on your server>:<third server address>:<port>
* `-Nf` - Do not login
Because the public server and third server are the same computer/container you have to use localhost :)
来源：https://stackoverflow.com/questions/39633057/ssh-port-forwarding-in-docker