How do I set up SSH access for an Amazon EC2 instance?

Basically, you need a private-key file to login into your EC2 via SSH. Follow these steps to create one:

• Go https://console.aws.amazon.com/ec2/home & sign in to your existing Amazon account.
• Click on "Key Pairs" on LHS or https://console.aws.amazon.com/ec2/home?region=us-east-1#s=KeyPairs.
  • You should see the list of KEYs generated by you (or during EC2 creation process).
  • Click on "Create Key Pair" if you don't see any or you lost your private-key.
  • Enter a unique name and hit enter.
  • A download panel will appear for you to save the private-key, save it.
  • Keep it somewhere with the file permission "0600"
• Click on "Instances" on LHS or https://console.aws.amazon.com/ec2/home?region=us-east-1#s=Instances
  • You should see the list of ec2-instances, if you don't see any, then please create one.
  • Click on the EC2 machine and note down the Public DNS address.
• Open your Terminal (in Linux) and type the following command
  • ssh -i /path/to/private-key root@<ec2-public-dns-address> - the root username has been avoided in the latest releases, based on your distribution select ec2-user or ubuntu as your username.
  • hit Enter
  • That's it.

ssh -i /path/to/private-key ubuntu@<ec2-public-dns-address>

just use ubuntu instead of root. Your problem will be solved. Cheers!