SSH / SFTP Configuration

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SSH and SFTP access for Wasmer Edge apps support both password and public key authentication.

This feature is disabled by default and must be enabled manually for each app.

Configuration in the Web UI

To enable SSH/SFTP access for your Edge app in the web UI:

Open your dashboard on wasmer.io
Open your app
Go to the Settings tab
Open the SFTP/SSH panel
Click Enable

You will now see your user/password access credentials and will be able to manage authorized SSH public keys.

Configuration in app.yaml

If you deploy your app with an app.yaml configuration, you can enable SSH/SFTP access there as well.

See the configuration reference for a detailed schema description.

Note: There is a small gotcha: The SSH username must be prefixed with the app short id, which is only available after the initial deployment. See below for how to retrieve the id.

Here is an example app.yaml configuration enabling SSH access:

app.yaml


capabilities:
  ssh:
    enabled: true
    users:
      - username: <app-shortid>_admin
        passwords:
          - type: plain
            password: "my-secure-password"
        authorized_keys:
          - "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQ..."
...

Retrieving the app shortid

To retrieve the app short id, you can use the Wasmer CLI:


wasmer app info <your-app-name>
 
...
Unique URL: https://19hninc0dpgd.id.wasmer.app
...

The shortid is the first part of the unique URL, in this case 19hninc0dpgd.

Use this id to prefix your SSH usernames in the app.yaml file.