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do you have any local firewall management done on your nodes?

it's a fresh 22.04 install of ubuntu and UFW is disabled from what I can see from

sudo ufw status

Can you connect via netcat from node2 or node3?

nc -v <node1_ip> 9345

do you see port 9345 listening on node1?

netstat -ntlp

Ah I see the problem - I'm an idiot. I had the wrong IP set in the config file for 2 and 3 apparently, I just fixed that and it's connecting like a charm. Sorry for wasting your time folks! thanks for the help