Terraform setup for automated install of microk8s on a Ubuntu 20.04 DigitalOcean VPS. Edits required, see comments for more info.

example.com.tf

# Edit name (example.com), region and size as you wish
resource "digitalocean_droplet" "example.com" {
    image = "ubuntu-20-04-x64"
    name = "example.com"
    region = "fra1"
    size = "s-2vcpu-4gb"
    private_networking = true
    ssh_keys = [
      var.ssh_fingerprint
    ]
  connection {
    host = self.ipv4_address
    user = "root"
    type = "ssh"
    private_key = file(var.pvt_key)
    timeout = "2m"
  }
  provisioner "remote-exec" {
    # Local scripts that are going to be executed on the new server, edit as necessary
    scripts = [
      ./swap.sh, # https://gist.github.com/demiters/ba1c66c382cd2870764bf58066116a7a
      ./user.sh, # https://gist.github.com/demiters/f51a0094eee3e56ea55b0e31095d9fbb
      ./firewall.sh, # https://gist.github.com/demiters/00794411f9144b9f684c8ea7acd74743
      ./aliases.sh, # https://gist.github.com/demiters/c322d99db658e37ba30c8f13ba8b434b
      ./microk8s.sh # https://gist.github.com/demiters/e8a7a7dda40037f52115849a7e7680b5
    ]
    inline = [
      "export PATH=$PATH:/usr/bin"
    ]
  }
}

init.sh

#!/bin/bash
# Assumes your ssh public and private keys are located at .ssh/id_rsa[.pub]

terraform init

terraform plan \
  -var "do_token=${DO_TOKEN}" \
  -var "pub_key=$HOME/.ssh/id_rsa.pub" \
  -var "pvt_key=$HOME/.ssh/id_rsa" \
  -var "ssh_fingerprint=${DO_SSH_FINGERPRINT}"

terraform apply \
  -var "do_token=${DO_TOKEN}" \
  -var "pub_key=$HOME/.ssh/id_rsa.pub" \
  -var "pvt_key=$HOME/.ssh/id_rsa" \
  -var "ssh_fingerprint=${DO_SSH_FINGERPRINT}"

terraform show terraform.tfstate

install.sh

#!/bin/bash
# Installs Terraform (Linux 64bit) for local use

mkdir -p $TF_PATH
filename="terraform.zip"
path_append='[[ ":$PATH:" != *":$TF_PATH/bin:"* ]] && PATH=$PATH:$TF_PATH/bin'

if curl --silent -o "${PWD}/${filename}" -L "https://releases.hashicorp.com/terraform/${TF_VERSION}/terraform_${TF_VERSION}_linux_amd64.zip"; then
    unzip "${filename}" -d "${TF_PATH}/bin"
    if [[ -f "${PWD}/${filename}" ]]; then
        echo "Removing the file.."
        rm -f "${PWD}/${filename}"
        echo "$path_append" >> $SH_RC"
        . $SH_RC
    fi
else
    echo "Something went wrong"
fi

provider.tf

variable "do_token" {}
variable "pub_key" {}
variable "pvt_key" {}
variable "ssh_fingerprint" {}

provider "digitalocean" {
  token = var.do_token
}

vars.sh

#!/bin/bash
# Edit these and run this script first

# DigitalOcean personal access token
export DO_TOKEN=xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

# MD5 fingerprint of your public key:
# ssh-keygen -E md5 -lf ~/.ssh/id_rsa.pub | awk '{print $2}'
export DO_SSH_FINGERFRINT="xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx:xx"

# Terraform version to install
export TF_VERSION="0.12.24"

# Path to install Terraform in
export TF_PATH="/home/arturs/opt/terraform"

# Enable Terraform logging
export TF_LOG=1

# Shell config to write into
export SH_RC="/home/arturs/.zshrc"