Files
homelab-config/nixos/script.sh
T

98 lines
2.9 KiB
Bash
Executable File

#!/usr/bin/env bash
# User variables
target_hostname=""
target_destination=""
target_user=${BOOTSTRAP_USER-root} # Set BOOTSTRAP_ defaults in your shell.nix
ssh_port=${BOOTSTRAP_SSH_PORT-22}
ssh_key=${BOOTSTRAP_SSH_KEY-}
# Create a temporary directory
temp=$(mktemp -d)
# Function to cleanup temporary directory on exit
cleanup() {
rm -rf "$temp"
}
trap cleanup EXIT
function help_and_exit() {
echo
echo "Remotely installs NixOS on a target machine using this nix-config."
echo
echo "USAGE: $0 -n <target_hostname> -d <target_destination> -k <ssh_key> [OPTIONS]"
echo
echo "ARGS:"
echo " -n <target_hostname> specify target_hostname of the target host to deploy the nixos config on."
echo " -d <target_destination> specify ip or domain to the target host."
echo " -k <ssh_key> specify the full path to the ssh_key you'll use for remote access to the"
echo " target during install process."
echo " Example: -k /home/${target_user}/.ssh/my_ssh_key"
echo
echo "OPTIONS:"
echo " -u <target_user> specify target_user with sudo access. nix-config will be cloned to their home."
echo " Default=root."
echo " --port <ssh_port> specify the ssh port to use for remote access. Default=${ssh_port}."
echo " --debug Enable debug mode."
echo " -h | --help Print this help."
exit 0
}
# Handle command-line arguments
while [[ $# -gt 0 ]]; do
case "$1" in
-n)
shift
target_hostname=$1
;;
-d)
shift
target_destination=$1
;;
-u)
shift
target_user=$1
;;
-k)
shift
ssh_key=$1
;;
--port)
shift
ssh_port=$1
;;
--temp-override)
shift
temp=$1
;;
--debug)
set -x
;;
-h | --help) help_and_exit ;;
*)
red "ERROR: Invalid option detected."
help_and_exit
;;
esac
shift
done
if [ -z "$target_hostname" ] || [ -z "$target_destination" ] || [ -z "$ssh_key" ]; then
red "ERROR: -n, -d, and -k are all required"
echo
help_and_exit
fi
# Create the directory where sshd expects to find the host keys
install -d -m755 "$tempSSH/persist/etc/ssh"
# Generate private key and copy it to the temporary directory
ssh-keygen -t ed25519 -f "$temp/$persist_dir/etc/ssh/ssh_host_ed25519_key" -C "$target_user"@"$target_hostname" -N ""
# Set the correct permissions so sshd will accept the key
chmod 600 "$temp/persist/etc/ssh/ssh_host_ed25519_key"
# Install NixOS to the host system with our secrets
nix run github:nix-community/nixos-anywhere --extra-experimental-features "nix-command flakes" -- --ssh-port "$ssh_port" --post-kexec-ssh-port "$ssh_port" --extra-files "$temp" --generate-hardware-config nixos-generate-config ./hardware-configuration.nix --disko-mode disko --build-on local --flake .#"$target_hostname" --target-host "$target_user"@"$target_destination"