Remote Access

To User account and Files

Users with an account can always access their Home Directories, and files, and run basic scripts, by connecting to ssh YOUR_USERNAME@gw.cosmos-lab.org

Detailed Instructions are at Connecting to a Console

To Consoles

The consoles can be connected to the same way as above, with the following differences:

1. Consoles can be connected to only during a Getting Started.
2. Consoles can run OMF commands to control Resources within their Domain
3. Consoles share a Control network with Resources within their Domain

To Resources

• Resources can be interacted with by running commands from a Console.
• For example:
• Using OMF commands to
  • Turn resources on/off
  • Load and save images
  • Run OEDL Scripts with OMF exec
• Use SSH from a console to open an interactive session with a compute resource.
• Use SSH with X11 Forwarding to view a graphical window from a resource on your local machine

Direct Access to Resources

This is an advanced topic. In the event that bridging through a console adds unacceptable overhead too your use case, the following options are available:

• Use SSH ​ProxyJump and similar commands to automate the connection though the console
• Use the VPN to route arbitrary network traffic from the Control Network to or from your local machine.

SSH

The most common method of connecting to the testbed is via SSH. The SSH protocol is quite powerful, and allows interactive shell sessions, file transfer, port forwarding, and even graphical display if configured properly with other utilities.

Configuring SSH Keys

SSH tunneling and X11

Common SSH issues

VPN

In cases where SSH is insufficient or inconvenient, an IPSEC VPN is available.

Common cases include:

• A need to tunnel many, or ephemeral ports.
• A need for a persistent connection joining two networks.