How to solve the error with the message ‘Permission denied (publickey,gssapi-keyex,gssapi-with-mic)’ which appears when I am trying do a ssh in AWS instance ?

Example Error:

cmacedo-OSX:.ssh camilamacedo$ ssh -i my_pair_key.pem IP/DNS

Permission denied (publickey,gssapi-keyex,gssapi-with-mic).

Possible Situations

• You’re not specifying the correct SSH keypair file or user name in the ssh command you’re using to log into the server:

  ssh -i [full path to keypair file] root@[EC2 instance hostname or IP address]

• You don’t have the correct permissions on the keypair file; you should use $ chmod 600 [keypair file]
• You forgot to use the user ‘ec2-user’ :

cmacedo-OSX:.ssh camilamacedo$ ssh -i my_pair_key.pem ec2-user@IP/DNS

**NOTE**: For you get more information add -v ( verbose ) in the ssh command.