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kolban-google / sftp-gcs

An implementation of an SFTP to Google Cloud Storage bridge.
Apache License 2.0
90 stars 36 forks source link

Additional Users #11

Open ItsJamesMurray opened 3 years ago

ItsJamesMurray commented 3 years ago

Hello! Thank you for putting this together.

I am trying to create a way for a vendor of one of my clients to send us data to our Storage Bucket. I followed the tutorial you posted on Medium and am able to get it running locally on my computer.

Two Questions:

  1. How can I create a username and password for the client? Is that something I do in sftp-gcs or do I set it up through
  2. When I end a session and then try to restart a session I get the following errors: 
    2021-07-13T23:10:18.423Z warn: [sftp-gcs] Unable to read /etc/ssh/ssh_host_rsa_key even though it exists.
2021-07-13T23:10:18.440Z warn: [sftp-gcs] Unable to find/access a system host key, using the application default host key.
fs.js:114
throw err;

Any help would be appreciated -- I'm a SFTP rookie here so it is all new to me.

kolban-google commented 3 years ago

Howdy James ... lets see if we can get you going. As always, realize that this is an OSS and is supplied fully as-is and should not be considered a Google product in any shape or form.

With that disclaimer ... the notion is that you host this sftp-gcs server either on one of your servers or on a GCP Compute Engine server. At that point, a user that you wish to have access to your GCP Cloud Storage Bucket can use an SFTP client to connect to this sftp-gcs server which will in turn act as a proxy to access the GCP Cloud Storage Bucket. There are two sets of identities in play here:

First there is the identity that your sftp client user will use to connect to the sftp-gcs server. You can either use shared SSH keys or you can specify a fixed userid/password pair. The sftp client user will then use one of those techniques to access the sftp-gcs server from their sftp client.

Once the end user has their sftp client connected to the sftp-gcs server, the next puzzle is what the connection between sftp-gcs and Google Cloud Storage looks like. This can be supplied either through the GOOGLE_APPLICATION_CREDENTIALS environment variable or through the --service-account-key-file parameter. This identities a single user that the sftp-gcs server presents itself as to Google Cloud Storage.

Let's see how this answer sits and post back as we pick up steam.