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Bash setup script for Ubuntu servers

This is a setup script to automate the setup and provisioning of Ubuntu servers. It does the following:

  • Adds or updates a user account with sudo access
  • Adds a public ssh key for the new user account
  • Disables password authentication to the server
  • Deny root login to the server
  • Setup Uncomplicated Firewall
  • Create Swap file based on machine's installed memory
  • Setup the timezone for the server (Default to "Asia/Singapore")
  • Install Network Time Protocol

Installation

SSH into your server and install git if it is not installed:

sudo apt-get update
sudo apt-get install git

Clone this repository into your home directory:

cd ~
git clone https://github.com/jasonheecs/ubuntu-server-setup.git

Run the setup script

cd ubuntu-server-setup
bash setup.sh

Setup prompts

When the setup script is run, you will be prompted to enter the username of the new user account.

Following that, you will then be prompted to add a public ssh key (which should be from your local machine) for the new account. To generate an ssh key from your local machine:

ssh-keygen -t ed25519 -a 200 -C "user@server" -f ~/.ssh/user_server_ed25519
cat ~/.ssh/user_server_ed25519.pub

Finally, you will be prompted to specify a timezone for the server. It will be set to 'Asia/Singapore' if you do not specify a value.

Supported versions

This setup script has been tested against Ubuntu 14.04, Ubuntu 16.04, Ubuntu 18.04, Ubuntu 20.04 and Ubuntu 22.04.

Running tests

Tests are run against a set of Vagrant VMs. To run the tests, run the following in the project's directory:
./tests/tests.sh