Lost access to Cloudlab node over ssh

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Alexander Hack

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Nov 22, 2025, 10:09:08 AM (10 days ago) Nov 22
to cloudlab-users
Hello,

My node is still running and Cloudlab displays status "ready" but I can no longer ssh into it. I was able to connect and do work on Thursday. Then still on Thursday, my connection began timing out:
ssh: connect to host ms0933.utah.cloudlab.us port 22: Connection timed out

On Thursday, I was turning the firewall off and on.
What likely happened is that I did "sudo ufw enable" without allowing ssh.

Experiment Status Page:
https://www.cloudlab.us/status.php?uuid=2e64cee0-c3d2-11f0-bc80-e4434b2381fc

Best,
Alex H.

Mike Hibler

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Nov 23, 2025, 7:58:05 PM (9 days ago) Nov 23
to 'Alexander Hack' via cloudlab-users
The console proxy was not running for ms0933, but it is now. So, you should
be able to login on the console as "root" now. Click on the node icon in the
Topology view tab and select Console. It should bring up a console table with
a link at the top that says "Password". That will be the "root" user password
you can login with. Then you can figure out what you did wrong.
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