sudo -u www-data ssh-copy-id root@compute1 error?

[tree1123]

i install webvirtcloud in ubuntu 18.04 success

but when i want to connect a computer and enter

sudo -u www-data ssh-copy-id root@compute1

show me

/usr/bin/ssh-copy-id: 59: cd: can't cd to /root
/usr/bin/ssh-copy-id: ERROR: No identities found

[catborise]

Before copy it. You should generate an id with ssh-keygen

[cyberfarer]

Try ...

su www-data -s /bin/bash
cd ~
ssh-keygen

Copy the content of /var/www/.ssh/id_rsa.pub to your hypervisor host and paste into /root/.ssh/authorized_keys - be careful to not copy any whitespace or miss any characters.

then back to the guest ssh root@hypervisor accept fingerprint and you should be good to go.