I’ve been dealing with this for the last couple days but only this morning realized that there was another fact I wasn’t including in my Google searches for “ssh not using key”: that my home directory on this particular box was encrypted.
(Below text from https://help.ubuntu.com/community/SSH/OpenSSH/Keys)
If you have an encrypted home directory, SSH cannot access your authorized_keys file because it is inside your encrypted home directory and won’t be available until after you are authenticated. Therefore, SSH will default to password authentication.
To solve this, create a folder outside your home named /etc/ssh/<username> (replace “<username>” with your actual username). This directory should have 755 permissions and be owned by the user. Move the authorized_keys file into it. The authorized_keys file should have 644 permissions and be owned by the user.
Then edit your /etc/ssh/sshd_config and add:
Finally, restart ssh with:
sudo service ssh restart
The next time you connect with SSH you should not have to enter your password.
#1 on 2016-Feb-25 Thu 02:06+-25200