Other HUB nodes

Adding new Node to HUB

For graduation projects or some Special issues, the XPUB HUB Node: Sandbox might not be adequate, add new nodes can be added the XPUB HUB Tinc network This page describes how to do it

Steps to add a new Node to HUB

For Pi user (with sudo/root)

Use this template to fill in all the fields and you go through the process

    user: psc
    Node name: ?XYZ?
    IP: 10.0.0.???
    url: https://hub.xpub.nl/?XYZ?
    ssh public key:
    ?????????@??

In your Pi: (or other Unix machine connected to the internet) create a user adduser with same username as used in the Sandbox Pi

• Keeping it the same as in the sandbox - will make things easier for us and gnd (no need to give him again your public ssh key)

In your Pi: Add your laptop's user's public ssh key to your Pi user account in ~/.ssh/authorized_keys

In your Pi: Install Tinc on the Pi. The instructions can be found in the Tinc page

Add your chosen Node name and IP to HUB#IP_allocation

• Student project IPs last number should have 3 digits

In your Pi: Add your laptop's ssh public key

• getting and copying your laptop's ssh public key
  • cat ~/.ssh/id_ed25519.pub
• add it to Pi's ~/.ssh/authorized_keys:
  • sudo nano ~/.ssh/authorized_keys

In your Pi: Disable ssh with password (allow ssh with sshkey only):

• edit sshd_config file:
  • sudo nano /etc/ssh/sshd_config
• uncomment the line: #PasswordAuthentication no
  • so it becomes: PasswordAuthentication no
• reload ssh:
  • sudo systemctl reload ssh

For XPUB Staff (with sudo in XVM)

Create a Tinc invitation links to each node HUB#Adding_a_new_thing

Ask gnd to associate the Pi user's username + ssh pubkey with the Pi IP