SSH key authentication failed
This is a checklist to solve authentication with ssh keys 
if it doesn’t working
- Check logs, especially the auth log or secure log
Feb 2 10:27:46 myhost sshd[37018]: Authentication refused: bad ownership or modes for directory /home/sgonzalez
Feb 2 10:27:51 myhost sshd[37018]: Accepted password for sgonzalez from 10.198.33.99 port 42818 ssh2
As shown above, this is solved running chmod 700 /home/sgonzalez
- Verify permissions of
~/.ssh/authorized_keysmust be0700-rw------- 1 sgonzalez sgonzalez 735 Jul 6 2015 authorized_keys - The Security Enhanced Linux (SELinux). Check if your home directory is correctly labeled. You can run the following command to reset the label.
restorecon -Rv /home/sgonzalez
So far, you may solve the authentication with ssh keys 
. If not, I’m glad to help you so leave me a comment and I am going to answer.