Droplet setup essentials

setup.sh

# login
ssh root@server

# install updates
sudo apt-get update && sudo apt-get upgrade -y

# install some utils
sudo apt-get install -y git zsh wget curl htop

# firewall
sudo apt-get -y install ufw
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow ssh

# add new user
sudo adduser something

# add user to sudoers
#/etc/sudoers
something ALL=NOPASSWD: ALL

# logout & copy ssh-key
ssh-copy-id something@server

# login with new user
ssh something@server

# strengthen ssh settings
#/etc/ssh/sshd_config
#ChallengeResponseAuthentication no
#PasswordAuthentication no
#UsePAM no
#PermitRootLogin no
sudo service ssh restart

# install oh-my-zsh
sh -c "$(curl -fsSL https://raw.githubusercontent.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"