ssh into notebooks

Request: Be able to ssh into a running notebook

Problem:

1. Notebooks are containers running in a private overlay network (in our docker swarm).
   1. containers are not designed for running daemons (like ssh)
   2. There is no possibility to reach the container from outside (reach outside from the container is no issue)
2. The notebook is a standalone server and users need to be able to authenticate to their container

Possible solutions:

1. Notebooks
   1. running ssh
      • Let the user start a script that forks off ssh (and potentially does the proxying bootstrap)
   2. Private network
      • Set up a proxy with a public IP that the notebook connects to and setup a reverse tunnel
      • Create a vpn (wireguard etc) server that all notebooks connect to and can be reachable from there
      • Configure "docker swarm proxy" that does the portforwarding to the correct container.
2. Authentication
   • the users need to manually configure the ssh key (or alternatively downloads it from git.cs.kau.se)
   • Need to configure a trust between the container and the proxy
3. Publish a unique port to each user that forwards to the container port 22