This maintenance is now complete You can now resume your work.
The IPs you are trying are not your VMs. Those were examples mentioned in the documentation. You should replace those with the IPs you obtain after creating your VMs
This maintenance has been completed. You can safely resume using this site.
Here is my version of the ssh config file. Its advisable to save it in ~/work/.ssh/config rather than ~/.ssh/config since ~/work is persistent upon re-creation of the jupyterhub instance
UserKnownHostsFile /dev/null
StrictHostKeyChecking no
ServerAliveInterval 120Host bastion-?.fabric-testbed.net
User <your bastion host username>
ForwardAgent yes
Hostname %h
IdentityFile <path to your bastion host private key>
IdentitiesOnly yesHost * !bastion-?.fabric-testbed.net
ProxyJump <your bastion host username>@bastion-1.fabric-testbed.net:22
##ProxyJump <your bastion host username>@bastion-2.fabric-testbed.net:22
Once this file is saved, you no longer need the -J param as long as this file is included in your ssh command .
For example.
ssh -F ~/work/.ssh/config centos@63.239.135.94 should work