Could not create domain from / var / lib / one /datastores/0/9/deployment.3

Can you please eplain the solution

hello, i am using Ubuntu 16.04, the solution was to disable the firewall with the command ufw disable

Disable the firewall on the Frontend? or the node? or both. And then restart the opennebula service and node services?

Error deploying virtual machine: Could not create domain from /var/lib/one//datastores/0/3/deployment.0 i got such error. can you help me

the connection between the host and the frontend without a password

i am confused about it, . .