Here are steps what i did for ssh key connection:
generated ssh key, the i checked /User/admin/.ssh/ here i have idrsa, idrsa.pub and known_hosts. I copied idrsa.pub to ~/.ssh/authorizedkeys - (I triple checked taht they are the same) (btw i used ssh root@ip) then i tried to connect to ssh root@ip again. but it doesnt accept the key(password auth method worked after pubkey fail). Ubuntu 18.04.
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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
Try: ssh -vvv -i /User/admin/.ssh/idrsa root@ip
The verbose output will say whether the key matched the pub on the other end.