I've installed vsftpd on an Ubuntu EC2 instance but I'm not sure where the certificate files are to enter into vsftpd. The documentation says I need to add the following lines:
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
However, when I try and login using the normal ec2-keypair.pem file I get the message invalid privatekey