XPUB HUB New Nodes: Difference between revisions

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It is useful for machines (mostly Pis), without public IP addres, but which require public ssh or http access. As is the case of some students and Xpub projects  
It is useful for machines (mostly Pis), without public IP addres, but which require public ssh or http access. As is the case of some students and Xpub projects  


=Steps to add a machine to the Tinc network=
See instructions at [[Tinc]] page


'''In the Pi'''
Transclusion:
in your Pi's create a user with same username as in the sandbox. Keeping it the same as in the sandbox - will make things easier for us and gnd


add your public ssh key to your username in the Pi (same as mentioned) to ~/.ssh/authorized_keys
{{Tinc}}
There is a trick to do this with
cat ~/.ssh/id_rsa.pub | ssh local.pi.IP.addr "cat >> ~/.ssh/authorized_keys"
 
install Tinc on the Pis Instructions can be found here [[Tinc]], until the creation creation of the configuration dir:
sudo mkdir -p /usr/local/etc/tinc/
 
*Add your chosen Node name and IP to [[HUB#IP_allocation]]
* Student project IPs last number should have 3 digits, last one is Simon's 10.0.1.103, so you can start from there
 
Disable ssh to your pi with password (allow ssh key only), by:
* ensuring you laptops ssh public key is in your pi ~/.ssh/authorized_keys:
cat  ~/.ssh/authorized_keys
* ensuring you can login to the Pi with ssh key:
ssh username@pi.ip.add -i ~/.ssh/id_rsa
* edit /etc/ssh/sshd_config:
sudo nano /etc/ssh/sshd_config
* and uncomment the line:
#PasswordAuthentication no
to:
PasswordAuthentication no
* reload ssh:
sudo systemctl reload ssh
 
You up with the following info:
 
<pre>
username: nameoftheuser
Node IP: 10.0.0.???
Node name: nameofnode
ssh public key:
ssh-ed25519 ... ... nameoftheuser@laptop
</pre>
 
'''In the XVM (xpub server)'''
 
As root:
 
create an invitation node the node as described in [[HUB#Adding_a_new_thing]]
 
tinc -n hub invite $NAMEOFNODE
 
Which will generate an invitation address
 
 
'''Back In the Pi'''
 
User invitation to join the network ($INVITE_ADDRES)
 
  sudo tinc join $INVITE_ADDRES
 
Add the pi to the hub network under the chosen Node IP ($NODE.IP.ADDRS):
 
  sudo tinc -n hub add subnet $NODE.IP.ADDRS
 
edit the tinc-up file in /usr/local/etc/tinc/hub/: commenting the echo line and adding the line:
* Note: $INTERFACE should remain as is; $NODE.IP.ADDRS should be replace with the Node IP
  ifconfig $INTERFACE $NODE.IP.ADDRS netmask 255.255.255.0
* Example tinc-up file:
<source lang="bash">
#!/bin/sh
# echo 'Unconfigured tinc-up script, please edit '$0'!'
ifconfig $INTERFACE 10.0.0.105 netmask 255.255.255.0
</source>
 
Start tincd daemon:
tincd -n hub -D -d3
 
In new window, ssh again to the pi and see if you can ping other tinc nodes:
ping 10.0.0.1
 
If so Tinc is running :) yahh
 
 
 
 
* ask gnd to associate your username+pub key to the Pi IP:

Revision as of 17:41, 20 April 2020

New nodes (machines) can be edited to the HUB Tinc network.

It is useful for machines (mostly Pis), without public IP addres, but which require public ssh or http access. As is the case of some students and Xpub projects

See instructions at Tinc page

Transclusion:

Template:Tinc