RedHat 6/Oracle Linux 6 is not allowing key authentication via ssh

Question

Keys are properly deployed in ~/.ssh/authorized_keys

Yet ssh keeps on prompting for a password.

Answer 1

The above answer is quite good, I have an addition & a suggestion. The addition is in line 2 below, as home directory permissions not be more permissive than rwxr-x--- for ssh key authentication.

cd ~
chmod g-w,o-rwx .
chmod 700 .ssh
cd .ssh
chmod 600 *
chmod 644 authorized_keys
chmod 644 known_hosts
chmod 644 config
restorecon -R -v ../.ssh

The suggestion is to make use of the -vv option when testing.