How to ssh to localhost without password?

Question

EDIT: Putting exactly what was done

I need to SSH localhost without password, the usual way of doing it (with public keys) do not work.

user@PC:~$ rm -rf .ssh/* user@PC:~$ ssh-keygen -t rsa > /dev/null  Enter file in which to save the key (/home/user/.ssh/id_rsa):  Enter passphrase (empty for no passphrase):  Enter same passphrase again:  user@PC:~$ ls .ssh/ id_rsa  id_rsa.pub user@PC:~$ ssh-copy-id -i localhost  The authenticity of host 'localhost (::1)' can't be established. RSA key fingerprint is f7:87:b5:4e:31:a1:72:11:8e:5f:d2:61:bd:b3:40:1a. Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added 'localhost' (RSA) to the list of known hosts. user@localhost's password:  Now try logging into the machine, with "ssh 'localhost'", and check in:    .ssh/authorized_keys  to make sure we haven't added extra keys that you weren't expecting.  user@PC:~$ ssh-agent $SHELL user@PC:~$ ssh-add -L The agent has no identities. user@PC:~$ ssh-add  Identity added: /home/user/.ssh/id_rsa (/home/user/.ssh/id_rsa) user@PC:~$ ssh-add -L ssh-rsa ...MY KEY HERE  user@PC:~$ ssh-copy-id -i localhost  user@localhost's password:  Now try logging into the machine, with "ssh 'localhost'", and check in:    .ssh/authorized_keys  to make sure we haven't added extra keys that you weren't expecting.  user@PC:~$ ssh localhost echo 'testing' user@localhost's password:   user@PC:~$  

So as you can see in the last command it is still asking the password! How can I fix that? Ubuntu-10.04, OpenSSH_5.3p1

EDIT2:

Adding some info about the sshd

user@PC:~$ cat /etc/ssh/sshd_config | grep Authentication # Authentication: RSAAuthentication yes PubkeyAuthentication yes RhostsRSAAuthentication no HostbasedAuthentication no # Uncomment if you don't trust ~/.ssh/known_hosts for RhostsRSAAuthentication ChallengeResponseAuthentication no # PasswordAuthentication yes 

EDIT3: Ading result from $ssh -vv localhost

$ssh -vv localhost ... debug1: Authentications that can continue: publickey,password debug1: Next authentication method: publickey debug1: Trying private key: /home/user/.ssh/identity debug1: Offering public key: /home/user/.ssh/id_rsa debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password debug1: Trying private key: /home/user/.ssh/id_dsa debug2: we did not send a packet, disable method debug1: Next authentication method: password user@localhost's password:  

Answer 1

I did following 3 steps to create the password less login

1. ssh-keygen -t rsa Press enter for each line  2. cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys 3. chmod og-wx ~/.ssh/authorized_keys