Show me this error
The authenticity of host ‘ip (ip)’ can’t be established. ECDSA key fingerprint is Are you sure you want to continue connecting (yes/no/[fingerprint])? yes Failed to add the host to the list of known hosts (/home/yukio/.ssh/known_hosts). root@ip: Permission denied (publickey).
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Hello there,
You can check our article on How to Upload an SSH Public Key to an Existing Droplet
You can access the droplet from the DigitalOcean console and then temporary enable the PasswordAuthentication on your droplet and access the droplet with a password to upload the ssh-key.
If you haven’t created new pair of keys you’ll need to do that first.
You can enable PasswordAuthentication for your Droplet by modifying your
/etc/ssh/sshd_config
file. Once set to Yes restart the SSH service and connect via an SSH client for a more stable connection. You can then modify your~/.ssh/authorized_keys
file to add the appropriate public key.This change can be made from the DigitalOcean’s console. If you’re having issues accessing the console you can then reach to our amazing support team that can help you further with this.
To enable the
PasswordAuthentication
follow these steps:sudo nano /etc/ssh/sshd_config
PasswordAuthentication
from “no” to “yes” and save the filesudo nano ~/.ssh/authorized_keys
sudo nano /etc/ssh/sshd_config
PasswordAuthentication
from “yes” to “no” and save the fileYou can then upload the key using this command:
ssh-copy-id -i ~/.ssh/mykey user@droplet
Hope that this helps! Regards, Alex
Hey there!
There’s a great guide on troubleshooting SSH issues in the docs here: https://docs.digitalocean.com/products/droplets/resources/troubleshooting-ssh/
But it sounds like something is messed up in your local configuration. You may want to check out this post on StackOverflow for more troubleshooting steps: https://stackoverflow.com/questions/17668283/failed-to-add-the-host-to-the-list-of-know-hosts