add_user_to_ec2_instance.md

How to add new user to AWS ec2 instance?

1. Login as a ec2-user to the instance

$ ssh -i ~/.ssh/<key> ec2-user@<ip-address>

2. Create user

$ sudo useradd newuser

3. Allow ssh access for the user

Login as new user

$ sudo -su newuser

Create ssh directory

$ cd /home/newuser
$ mkdir .ssh
$ chmod 700 .ssh
$ cd .ssh

Add ssh key

$ touch authorized_keys
$ chmod 600 authorized_keys
$ echo "<public_key>" > authorized_keys

4. Validate access

$ ssh -i ~/.ssh/newuser-private-key newuser@<ip-address>