samfelag/docs/install.org

Installing

• Set up
  • If new host, follow Setting up a new host
  • Open a nix-shell with dependencies
  • Obtain the flake
  • Copy the host ssh key
• Partition the disk
  • Locate the disk
  • UEFI Boot
  • MBR boot
• Format the partitions
• Mount the filesystems
• Create the host nix configuration
• Install nixos!
• Copy the ssh deploy key (again)
• Set up the user

Set up

If new host, follow Setting up a new host

Open a nix-shell with dependencies

nix shell nixpkgs#git

Obtain the flake

• Via git clone

git clone https://git.samfelag.xyz/marc/samfelag.git

• Via scp (in this case, from local to remote)

scp samfelag marc@remotehost:samfelag

Copy the host ssh key

Obtain the host ssh private key. You can decrypt it using gpg:

gpg -d secrets/ssh-keys/id_<host>.gpg > /etc/ssh/id_<host>

Copy the ssh keys to `/etc/ssh`

Partition the disk

We'll partition the disk in the follwing way:

• 512MB at the beginning for the boot partition
• 8GB at the end for swap
• The rest (at the middle) for the filesystem (/)

Locate the disk

lsblk

UEFI Boot

1. Create a GPT partition table

   sudo parted /dev/nvme0n1 -- mklabel gpt

2. Create the root partition

   sudo parted /dev/nvme0n1 -- mkpart primary 512MB -8GB

3. Create the swap partition

   sudo parted /dev/nvme0n1 -- mkpart primary linux-swap -8GB 100%

4. Create the boot partition

   sudo parted /dev/nvme0n1 -- mkpart ESP fat32 1MB 512MB
   sudo parted /dev/nvme0n1 -- set 3 esp on

MBR boot

1. Create a MBR partition table

   sudo parted /dev/vda -- mklabel msdos

2. Create the root partition

   sudo parted /dev/vda -- mkpart primary 1MiB -8GiB

3. Create the swap partition

   sudo parted /dev/vda -- mkpart primary linux-swap -8GiB 100%

4. Create the boot partition

   sudo parted /dev/vda -- mkpart ESP fat32 1MB 512MB
   sudo parted /dev/vda -- set 3 esp on

Format the partitions

1. Root partition

   sudo mkfs.ext4 -L nixos /dev/nvme0n1p1

2. Swap partition

   sudo mkswap -L swap /dev/nvme0n1p2

3. Boot partition (if UEFI boot)

   sudo mkfs.fat -F 32 -n BOOT /dev/nvme0n1p3

Mount the filesystems

1. Root partition

   sudo mount /dev/disk/by-label/nixos /mnt

2. Boot partition (if UEFI boot)

   sudo mkdir -p /mnt/boot
   sudo mount /dev/disk/by-label/BOOT /mnt/boot

3. Swap partition (if needed)

   sudo swapon /dev/disk/by-label/swap

Create the host nix configuration

If the host is not present under system/hosts, create a new folder for the host. Check Setting up a new host for further documentation. Generate the hardware configuration file, you can use nixos-generate-config as a base:

nixos-generate-config --dir <<host directory>> --no-filesystems

Install nixos!

sudo nixos-install --impure --root /mnt --flake '.#reykjavik'

Copy the ssh deploy key (again)

cp /etc/ssh/samfelag_agenix* /mnt/etc/ssh

Set up the user

You'll set the root password during the installation. You can then reboot and use the installed OS. First thing you'll have to do is log in as root and set the password for your user:

passwd marc