User names for connecting to AWS EC2 instances via SSH
Recently, I got chance to work with various Linux distributions on Amazon AWS EC2 instances. When creating EC2 instance, normally we will select AMI & AWS done all other tasks.
It never ask for a user name. But when I start to communicate with my server via SSH, the user name is essential.
So here is a small list that show the official AMI SSH user name for various Linux distributions in AWS EC2.
| OS / Distro | User name |
|---|---|
| Amazon Linux | ec2-user |
| Ubuntu | ubuntu |
| Debian | admin |
| RHEL 6.4 and later | ec2-user |
| RHEL 6.3 and earlier | root |
| Fedora | ec2-user |
| Centos | centos |
| SUSE | root |
| BitNami | bitnami |
| TurnKey | root |
| NanoStack | ubuntu |
| FreeBSD | ec2-user |
| OmniOS | root |
Some AMIs are configured like when we start a SSH communication with root will output a message informing us the correct user to use and then close the connection. For example,
$ ssh root@<my_ip>
Please login as the user "ubuntu" rather than the user "root".
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