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https://github.com/sweenu/nixfiles

NixOS home and servers configuration
https://github.com/sweenu/nixfiles

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NixOS home and servers configuration

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# NixOS config for my personal computer and servers



![neofetch](./assets/neofetch_2022_10_15.png)



## Presentation



I have three [NixOS](https://nixos.org) machines:

- _carokann_: personal computer ([Framework](https://frame.work) laptop).

- _najdorf_: server where I deploy my self-hosted apps.

- _grunfeld_: main RaspberryPi that serves as a [snapcast](https://github.com/badaix/snapcast) server and a local backup.



The hosts communicate through [Tailscale](https://tailscale.com).



This repo is structured with the [digga](https://digga.divnix.com) flake library.



### Software I use on my personal computer (carokann)



- Wayland compositor: [sway](https://swaywm.org)

- Wayland bar: [Waybar](https://github.com/Alexays/Waybar) (style copied from [@KubquoA](https://github.com/KubqoA)'s [config](https://github.com/KubqoA/dotfiles))

- Notification manager: [mako](https://wayland.emersion.fr/mako)

- Editor: [kakoune](https://github.com/mawww/kakoune)

- Terminal: [alacritty](https://github.com/alacritty/alacritty)

- Terminal multiplexer: [tmux](https://github.com/tmux/tmux)

- Shell: [fish](https://fishshell.com)

- Browser: [firefox](https://www.mozilla.org/en-US/firefox)



### Self-hosted apps on my server (najdorf)



I deploy most services as Docker containers through [Arion](https://github.com/hercules-ci/arion)



- [Træfik](https://traefik.io/traefik)

- [Authelia](https://www.authelia.com)

- [Nextcloud](https://nextcloud.com)

- [Calibre-web](https://github.com/janeczku/calibre-web)

- [SimpleTorrent](https://github.com/boypt/simple-torrent)

- [SearXNG](https://docs.searxng.org)

- [goeland](https://github.com/slurdge/goeland)



Important data is backed up with [Restic](https://restic.net) to a local disk connected to my RaspberryPi.



## Bootstrap

To create a bootstrap ISO for a personal computer run:

```bash

$ nixos-generate --flake '.#bootstrap' --format iso

```



To create a ready-to-boot SD card for a RaspberryPi, do the following:

```bash

$ nixos-generate --flake '.#grunfeld' --format sd-aarch64 --system aarch64-linux

$ unzstd -d {the output path from the command above} -o nixos-sd-image.img

$ sudo dd if=nixos-sd-image.img of=/dev/sda bs=64K status=progress

```



To deploy the server config to a new machine:

```bash

# First, comment all services imported in hosts/najdorf/default.nix and uncomment the ts-oneshot-login service line.

# Then run:

$ nixos-anywhere --copy-host-keys --flake '.#najdorf' root@

# Copy the old server's host key

$ scp 'root@najdorf:/etc/ssh/ssh_host_*' root@najdorf-1:/etc/ssh/

# Stop all running services, then:

$ ssh root@najdorf 'ssh-keyscan -H najdorf-1 >> ~/.ssh/known_hosts'

$ ssh -f root@najdorf 'rsync -avz /opt root@najdorf-1:/opt > /home/sweenu/rsync.log 2>&1 &'

# I made all Docker volumes bind mounts in /opt in order for this command to be enough for migrating everything important.

# Uncomment services in hosts/najdorf/default.nix and comment the tailscale-login service line.

# Remove najdorf from tailscale and change the tailscale name from najdorf-1 to najdorf.

# Change DNS records to point to the new server (on Cloudflare, change the IP scope of the API token to the new IP).

# Finally:

$ deploy '.#najdorf'

# All done!

```



## Acknowledgment:

* Thanks to [@KubquoA](https://github.com/KubqoA) for making this [reddit post](https://www.reddit.com/r/unixporn/comments/lepmss/sway_simple_sway_on_nixos) from which I discovered NixOS and from which I stole the Waybar style.

* Thanks to the [digga](https://digga.divnix.com) people for making my life easier when I first started to use NixOS.