Here are the set of commands that you need to run as root on a new digital ocean droplet (assuming you have already setup root to have ssh access). This will setup mynewuser with passwordless sudo rights and the ability to ssh into the machine without a password (using only your ssh-key)
<code>adduser --system --group mynewuser</code>
<code>mkdir /home/mynewuser/.ssh</code>
<code>chmod 0700 /home/mynewuser/.ssh/</code>
<code>cp -Rfv /root/.ssh /home/mynewuser/</code>
<code>chown -Rfv mynewuser.mynewuser /home/mynewuser/.ssh</code>
<code>chown -R mynewuser:mynewuser /home/mynewuser/</code>
<code>gpasswd -a mynewuser sudo</code>
<code>echo "mynewuser ALL=(ALL) NOPASSWD: ALL" | (EDITOR="tee -a" visudo)</code>
<code>service ssh restart</code>
<code>usermod -s /bin/bash mynewuser</code>
<a target="_blank" href="https://www.digitalocean.com/community/questions/secure-ubuntu-server-for-non-root-user-using-only-ssh-keys">Reference</a>

Here are the set of commands that you need to run as root on a new digital ocean droplet (assuming you have already setup root to have ssh access). This will setup mynewuser with passwordless sudo rights and the ability to ssh into the machine without a password (using only your ssh-key)

`adduser --system --group mynewuser`

`mkdir /home/mynewuser/.ssh`

`chmod 0700 /home/mynewuser/.ssh/`

`cp -Rfv /root/.ssh /home/mynewuser/`

`chown -Rfv mynewuser.mynewuser /home/mynewuser/.ssh`

`chown -R mynewuser:mynewuser /home/mynewuser/`

`gpasswd -a mynewuser sudo`

`echo "mynewuser ALL=(ALL) NOPASSWD: ALL" | (EDITOR="tee -a" visudo)`

`service ssh restart`

`usermod -s /bin/bash mynewuser`

[Reference](https://www.digitalocean.com/community/questions/secure-ubuntu-server-for-non-root-user-using-only-ssh-keys) 

Secure Ubuntu server for non-root user using only SSH keys

Hello, I am Victor. I am a software engineer with corporate experience. 
Solution provider for #startups and  #enterprise using Javascript (Node JS and React) | Python. 
