100 lines
3.1 KiB
Markdown
100 lines
3.1 KiB
Markdown
|
# Bootstrapping
|
||
|
|
|
||
|
|
This will help you boostrap a bare host with the help of the
|
||
|
|
[bespoke iso](./iso) live installer.
|
||
|
|
|
||
|
|
_Note: nothing prevents you from remotely executing the boostrapping
|
||
|
|
process. See below._
|
||
|
|
|
||
|
|
Once your target host has booted into the live iso, you need to partion
|
||
|
|
and format your disk according to the [official manual][manual].
|
||
|
|
|
||
|
|
## Mount partitions
|
||
|
|
|
||
|
|
Then properly mount the formatted partitions at `/mnt`, so that you can
|
||
|
|
install your system to those new partitions.
|
||
|
|
|
||
|
|
Mount `nixos` partition to `/mnt` and — for UEFI — `boot`
|
||
|
|
partition to `/mnt/boot`:
|
||
|
|
|
||
|
|
```console
|
||
|
|
$ mount /dev/disk/by-label/nixos /mnt
|
||
|
|
$ mkdir -p /mnt/boot && mount /dev/disk/by-label/boot /mnt/boot # UEFI only
|
||
|
|
$ swapon /dev/$your_swap_partition
|
||
|
|
```
|
||
|
|
|
||
|
|
## Install
|
||
|
|
|
||
|
|
Install using the `flk` wrapper baked into the iso off of a copy of devos
|
||
|
|
from the time the iso was built:
|
||
|
|
|
||
|
|
```console
|
||
|
|
$ cd /iso/devos
|
||
|
|
$ nix develop
|
||
|
|
$ flk install NixOS --impure # use same host as above
|
||
|
|
```
|
||
|
|
|
||
|
|
<!-- TODO: find out why --impure is necesary / PRs welcome! -->
|
||
|
|
|
||
|
|
## Notes of interest
|
||
|
|
|
||
|
|
### Remote access to the live installer
|
||
|
|
|
||
|
|
The iso live installer comes preconfigured with a network configuration
|
||
|
|
which announces it's hostname via [MulticastDNS][mDNS] as `hostname.local`,
|
||
|
|
that is `NixOS.local` in the [iso example](./iso).
|
||
|
|
|
||
|
|
In the rare case that [MulticastDNS][mDNS] is not availabe or turned off
|
||
|
|
in your network, there is a static link-local IPv6 address configured to
|
||
|
|
`fe80::47`(mnemonic from the letter's position in the english alphabet:
|
||
|
|
`n=14 i=9 x=24; 47 = n+i+x`).
|
||
|
|
|
||
|
|
Provided that you have added your public key to the authorized keys of the
|
||
|
|
`root` user _(hint: [`deploy-rs`](../integrations/deploy) needs passwordless
|
||
|
|
sudo access)_:
|
||
|
|
|
||
|
|
```nix
|
||
|
|
{ ... }:
|
||
|
|
{
|
||
|
|
users.users.root.openssh.authorizedKeys.keyFiles = [
|
||
|
|
../secrets/path/to/key.pub
|
||
|
|
];
|
||
|
|
}
|
||
|
|
```
|
||
|
|
|
||
|
|
You can then ssh into the live installer through one of the
|
||
|
|
following options:
|
||
|
|
|
||
|
|
```console
|
||
|
|
ssh root@NixOS.local
|
||
|
|
|
||
|
|
ssh root@fe80::47%eno1 # where eno1 is your network interface on which you are linked to the target
|
||
|
|
```
|
||
|
|
|
||
|
|
_Note: the [static link-local IPv6 address][staticLLA] and [MulticastDNS][mDNS] is only
|
||
|
|
configured on the live installer. If you wish to enable [MulticastDNS][mDNS]
|
||
|
|
for your environment, you ought to configure that in a regular [profile](../../profiles)._
|
||
|
|
|
||
|
|
### EUI-64 LLA & Host Identity
|
||
|
|
|
||
|
|
The iso's IPv6 Link Local Address (LLA) is configured with a static 64-bit Extended
|
||
|
|
Unique Identifiers (EUI-64) that is derived from the host interface's Message
|
||
|
|
Authentication Code (MAC) address.
|
||
|
|
|
||
|
|
After a little while (a few seconds), you can remotely discover this unique and host
|
||
|
|
specific address over [NDP][NDP] for example with:
|
||
|
|
|
||
|
|
```console
|
||
|
|
ip -6 neigh show # also shows fe80::47
|
||
|
|
```
|
||
|
|
|
||
|
|
***This LLA is stable for the host, unless you need to swap that particular network card.***
|
||
|
|
Under this reservation, though, you may use this EUI-64 to wire up a specific
|
||
|
|
(cryptographic) host identity.
|
||
|
|
|
||
|
|
|
||
|
|
[manual]: https://nixos.org/manual/nixos/stable/index.html#sec-installation-partitioning
|
||
|
|
[mDNS]: https://en.wikipedia.org/wiki/Multicast_DNS
|
||
|
|
[NDP]: https://en.wikipedia.org/wiki/Neighbor_Discovery_Protocol
|
||
|
|
[staticLLA]: https://tools.ietf.org/html/rfc7404
|