Adding a public key to ~/.ssh/authorized_keys does not log me in automatically

Question

I added the public SSH key to the authorized_keys file. ssh localhost should log me in without asking for the password.

I did that and tried t

Answer 1

Try "ssh-add" which worked for me.

Answer 2

In the following, user is your username.

mkdir -p /home/user/.ssh
ssh-keygen -t rsa
touch /home/user/.ssh/authorized_keys
touch /home/user/.ssh/known_hosts
chown -R user:user /home/user/.ssh
chmod 700 /home/user/.ssh
chmod 600 /home/user/.ssh/id*
chmod 644 /home/user/.ssh/id*.pub
chmod 644 /home/user/.ssh/authorized_keys
chmod 644 /home/user/.ssh/known_hosts

Answer 3

In my case it's because the user's group is not set in AllowGroups of configuration file /etc/ssh/sshd_config. After adding it, everything works fine.

Answer 4

I use it this way.

cat ~/.ssh/id_rsa.pub| ssh user@remote-system 'umask 077; cat >>~/.ssh/authorized_keys'

Answer 5

Listing a public key in .ssh/authorized_keys is necessary, but not sufficient for sshd (server) to accept it. If your private key is passphrase-protected, you'll need to give ssh (client) the passphrase every time. Or you can use ssh-agent, or a GNOME equivalent.

Your updated trace is consistent with a passphrase-protected private key. See ssh-agent, or use ssh-keygen -p.

Answer 6

Make sure you've copied the whole public key to authorized_keys; the ssh rsa prefix is necessary for the key to work.