Enable root Access for Linux Instances

AWS doesn't grant root access by default to EC2 instances. This is an important security best practise. Users are supposed to open a ssh connection using the secure key/pair to login as ec2-user. Users are supposed to use the sudo command as ec2-user to obtain elevated privileges.

 

Create a root Password

passwd root <the password>

Configure and Restart the ssh Service for root Access

Edit the configuration file /etc/ssh/sshd_config. Change the following to parameter to the values shown below:

PermitRootLogin yes
PasswordAuthentication yes

Restart the service with the command

service sshd reload

Patch the authorized Keys File for the root User

The simplest way is to use the ec2-user file and the certificate for the root user. Copy the ec2-user file over to the root user:

cp ~ec2-user/.ssh/authorized_keys ~root/.ssh/authorized_keys

This allows as well to login with the same key which is available for the ec2-user.

Update the AWS Cloud Configuration File

Edit the file /etc/cloud/cloud.cfg and change the following entry to this value:

disable_root false

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