Created
April 18, 2022 07:44
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A simple bootstrap script for Ubuntu 20.04 on DigitalOcean that setup firewall, creates a sudo user with a pass, installs libs, configure a locale and ssh.
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#!/bin/bash | |
# A simple boostrap script for Ubuntu 20.04 on DigitalOcean. | |
# Abort script at first error, when a command exits with non-zero status | |
# (except in until or while loops, if-tests, list constructs) | |
# https://www.tldp.org/LDP/abs/html/options.html | |
set -eu | |
# update repositories and install libraries | |
apt update && apt upgrade -y && apt install -y make git mosh pwgen htop lnav | |
# configure locale | |
locale-gen en_GB.UTF-8 | |
locale-gen en_US.UTF-8 | |
# creates a user and add to sudo group | |
echo "Enter your user name:" | |
read -r USER_NAME | |
adduser --disabled-password --gecos "" "${USER_NAME}" | |
usermod -aG sudo "${USER_NAME}" | |
# set a password | |
USER_PASSWORD="$(pwgen -r ',;' -s 25 -y)" | |
echo -e "Your password is \e[34m\"${USER_PASSWORD}\"\e[0m. \e[91mDON'T FORGET TO SAVE IT!\e[0m" | |
usermod --password "$(openssl passwd -1 "${USER_PASSWORD}")" "${USER_NAME}" | |
# sync root .ssh directory with vald user | |
rsync --archive --chown="${USER_NAME}":"${USER_NAME}" ~/.ssh "/home/${USER_NAME}" | |
# setup sshd | |
sed -i "0,/PermitRootLogin yes/s//PermitRootLogin no/" /etc/ssh/sshd_config | |
sed -i "0,/PasswordAuthentication no/s//PasswordAuthentication no/" /etc/ssh/sshd_config | |
sed -i "0,/#PermitEmptyPasswords no/s//PermitEmptyPasswords no/" /etc/ssh/sshd_config | |
systemctl restart ssh | |
# base firewall setup | |
ufw --force enable | |
ufw default deny incoming | |
ufw default allow outgoing | |
ufw allow 80/tcp | |
ufw allow 443/tcp | |
ufw allow 60001/udp | |
ufw allow 22 | |
#!/usr/bin/env sh | |
######################## Docker ######################################### | |
#Update the apt package index and install packages to allow apt to use a | |
#repository over HTTPS | |
sudo apt-get update | |
sudo apt-get install -y \ | |
apt-transport-https \ | |
ca-certificates \ | |
curl \ | |
gnupg-agent \ | |
software-properties-common | |
# Add Docker’s official GPG key | |
curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add - | |
# Set up the stable repository | |
sudo add-apt-repository -y \ | |
"deb [arch=amd64] https://download.docker.com/linux/ubuntu \ | |
$(lsb_release -cs) \ | |
stable" | |
# Update the apt package index, and install the latest version of Docker | |
# Engine and containerd | |
sudo apt-get update | |
sudo apt-get install -y docker-ce docker-ce-cli containerd.io | |
# Create the docker group | |
sudo groupadd -f docker | |
# Add your user to the docker group | |
sudo usermod -aG docker "${USER_NAME}" | |
# Delete snap store | |
snap remove lxd | |
snap remove core20 | |
apt purge -y snapd | |
rm -rf snap/ | |
######################## Docker Compose ################################# | |
# Download the current stable release of Docker Compose | |
sudo curl -L \ | |
"https://github.com/docker/compose/releases/download/1.26.2/docker-compose-$(uname -s)-$(uname -m)" \ | |
-o /usr/local/bin/docker-compose | |
# Apply executable permissions to the binary | |
sudo chmod +x /usr/local/bin/docker-compose | |
# Create a symbolic link to Docker Compose | |
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose | |
# Test installation | |
docker --version | |
docker-compose --version |
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sh -c "$(curl -fsSL https://gist.githubusercontent.com/britonad/0c7f0bb04d94a7873c740c00bea87893/raw/19ce437745daffee99a9a8300440ad1d60e98d85/do-bootstrap.sh)"