Posted 2022-02-03 with tags AWS

The following default usernames are listed on https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/connection-prereqs.html#connection-prereqs-get-info-about-instance:

  • Amazon Linux 2 or Amazon Linux AMI: ec2-user
  • CentOS AMI: centos or ec2-user
  • Debian AMI: admin
  • Fedora AMI: fedora or ec2-user
  • RHEL AMI: ec2-user or root
  • SUSE AMI: ec2-user or root
  • Ubuntu AMI: ubuntu
  • Oracle AMI: ec2-user
  • Bitnami AMI: bitnami
  • For anything else, just hope you can find it by duckduckgo-ing