I've just installed Ubuntu Core 16 on a Raspberry Pi 3. When I login using my private ssh key, it always needs a password.
I installed it by following the official provided guide.
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where is the key, you imported to the SSO server? Did you go through the "First boot" procedure? – Jakuje Aug 21 '17 at 08:30
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yes，the id_rsa.pub is imported to SSO,and the private key is kept on .ssh.whatever i tried to use ssh to login ubuntu core, it alwaysneeds a password. – jone Aug 21 '17 at 14:53
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"Did you go through the "First boot" procedure?" – Jakuje Aug 21 '17 at 14:53
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yes，it‘s the "First boot" procedure. – jone Aug 21 '17 at 15:11
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OK. Is the key you uploaded to SSH the id_rsa or something else? – Jakuje Aug 21 '17 at 15:12
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i can not absolutely understand "uploaded to SSH".the id_rsa.pub is imported to ubuntu one,and the private key is kept on .ssh. – jone Aug 21 '17 at 15:22
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In your log, the id_rsa key is rejected by pi. It means that you put the wrong key to the SSO or into ~/.ssh/id_rsa, or you did not configure the system in the first boot section. Or you are using a wrong username from the configuration. – Jakuje Aug 21 '17 at 15:25
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I had this problem and in my case the ssh-agent was not finding the key. After adding the key with the command below I was able to login. ssh-add I found this solution here https://askubuntu.com/a/762558/857041 – Steve J Dec 09 '18 at 23:14
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For someone who might get the same confusion as me: I also followed the tutorial from Ubuntu website, but in the final step, log in via ssh, I was required to enter a password.
Load key "/home/chin/.ssh/ubuntucore_rsa": bad permissions debug1: Next authentication method: password [email protected]'s password:
This problem was caused by my private rsa file was poorly protected. So I used the following command to modify its permission
sudo chmod 400 ~/.ssh/ubuntucore_rsa
Then I could login to Ubuntu Core via ssh.
pbhj
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