install.sh

#!/usr/bin/env bash

# Script to use Clever's kexec method to install NixOS on a Hetzner Cloud VM

TARGET=$1

printf "\n<<Copying kexec tarball to target>>\n"
scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
    ./nix-tests/kexec/result/tarball/nixos-system-x86_64-linux.tar.xz root@${TARGET}:/

printf "\n<<Running kexec on target>>\n"
ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
    root@${TARGET} "cd / && tar -xf nixos-system-x86_64-linux.tar.xz && ./kexec_nixos"

sleep 32

printf "\n<<Formatting disk & generating configuration>>\n"
ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@${TARGET} \
    "mkfs.ext4 -F /dev/sda1 && mount /dev/sda1 /mnt && nixos-generate-config --root /mnt"

printf "\n<<Copying temporary configuration to target>>\n"
scp -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
    ./temp-config.nix root@${TARGET}:/mnt/etc/nixos/configuration.nix

printf "\n<<Installing NixOS>>\n"
ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null \
    root@${TARGET} "nixos-install && reboot"