On my new installation of Ubuntu Server 22.04 LTS on ProxMox 7.2, I was receiving an error message about ‘cloud-init’ and ‘DataSourceNone’ whenever I logged into the Ubuntu Server.

If you don’t need cloud functionality, you can get rid of the error by disabling the cloud-init process:

sudo touch /etc/cloud/cloud-init.disabled
sudo reboot

Note: If you’re having trouble logging into shell to enter the above commands because you don’t see a prompt to enter your username, you can just go ahead and type in your username and press ‘enter’. You should then see a prompt to enter your password to complete the log in process.