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clan-core/docs/site/getting-started/configure.md
2025-02-27 09:56:52 +00:00

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Managing machine configurations can be done in the following ways:
- writing `nix` expressions in a `flake.nix` file,
- placing `autoincluded` files into your machine directory,
- configuring everything in a simple UI (upcoming).
Clan currently offers the following methods to configure machines:
!!! Success "Recommended for nix people"
- flake.nix (i.e. via `buildClan`)
- `machine` argument
- `inventory` argument
- machines/`machine_name`/configuration.nix (`autoincluded` if it exists)
See the complete [list](../manual/adding-machines.md#automatic-registration) of auto-loaded files.
???+ Note "Used by CLI & UI"
- inventory.json
## Global configuration
In the `flake.nix` file:
- [x] set a unique `name`.
=== "**normal flake template**"
```nix title="flake.nix" hl_lines="3"
buildClan {
# Set a unique name
meta.name = "Lobsters";
# Should usually point to the directory of flake.nix
directory = ./.;
}
```
=== "**template using flake-parts**"
!!! info "See [Clan with flake-parts](../manual/flake-parts.md) for help migrating to flake-parts."
```nix title="flake.nix" hl_lines="3"
clan = {
# Set a unique name
meta.name = "Lobsters";
};
```
## Machine configuration
Adding or configuring a new machine requires two simple steps:
### Step 1. Identify Target Disk-ID
1. Find the remote disk id by executing:
```bash title="setup computer"
ssh root@<IP> lsblk --output NAME,ID-LINK,FSTYPE,SIZE,MOUNTPOINT
```
!!! Note
Replace `<IP>` with the IP address of the machine if you don't have the avahi service running which resolves mDNS local domains.
Which should show something like:
```{.shellSession hl_lines="6" .no-copy}
NAME ID-LINK FSTYPE SIZE MOUNTPOINT
sda usb-ST_16GB_AA6271026J1000000509-0:0 14.9G
├─sda1 usb-ST_16GB_AA6271026J1000000509-0:0-part1 1M
├─sda2 usb-ST_16GB_AA6271026J1000000509-0:0-part2 vfat 100M /boot
└─sda3 usb-ST_16GB_AA6271026J1000000509-0:0-part3 ext4 2.9G /
nvme0n1 nvme-eui.e8238fa6bf530001001b448b4aec2929 476.9G
├─nvme0n1p1 nvme-eui.e8238fa6bf530001001b448b4aec2929-part1 vfat 512M
├─nvme0n1p2 nvme-eui.e8238fa6bf530001001b448b4aec2929-part2 ext4 459.6G
└─nvme0n1p3 nvme-eui.e8238fa6bf530001001b448b4aec2929-part3 swap 16.8G
```
!!! Warning
Make sure to copy the `ID-LINK` from toplevel disk device like `nvme0n1` or `sda` instead of `nvme0n1p1` or `sda1`
2. Edit the following fields inside the `./machines/jon/configuration.nix` and/or `./machines/sara/configuration.nix`
<!-- Note: Use "jon" instead of "<machine>" as "<" is not supported in title tag -->
```nix title="./machines/jon/configuration.nix" hl_lines="13 18 22 26"
{
imports = [
./hardware-configuration.nix
# contains your disk format and partitioning configuration.
../../modules/disko.nix
# this file is shared among all machines
../../modules/shared.nix
# enables GNOME desktop (optional)
../../modules/gnome.nix
];
# Put your username here for login
users.users.user.username = "__YOUR_USERNAME__";
# Set this for clan commands that use ssh
# If you change the hostname, you need to update this line to root@<new-hostname>
# This only works however if you have avahi running on your admin machine else use IP
clan.core.networking.targetHost = "root@__IP__";
# Replace this __CHANGE_ME__ with the result of the lsblk command from step 1.
disko.devices.disk.main.device = "/dev/disk/by-id/__CHANGE_ME__";
# IMPORTANT! Add your SSH key here
# e.g. > cat ~/.ssh/id_ed25519.pub
users.users.root.openssh.authorizedKeys.keys = [ "__YOUR_SSH_KEY__" ];
# ...
}
```
!!! Info "Replace `__YOUR_USERNAME__` with the ip of your machine, if you use avahi you can also use your hostname"
!!! Info "Replace `__IP__` with the ip of your machine, if you use avahi you can also use your hostname"
!!! Info "Replace `__CHANGE_ME__` with the appropriate `ID-LINK` identifier, such as `nvme-eui.e8238fa6bf530001001b448b4aec2929`"
!!! Info "Replace `__YOUR_SSH_KEY__` with your personal key, like `ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILoMI0NC5eT9pHlQExrvR5ASV3iW9+BXwhfchq0smXUJ jon@jon-desktop`"
You can also create additional machines using the cli:
```
$ clan machines create <machinename>
```
### Step 2: Custom Disk Formatting
In `./modules/disko.nix`, a simple `ext4` disk partitioning scheme is defined for the Disko module. For more complex disk partitioning setups,
refer to the [Disko templates](https://github.com/nix-community/disko-templates) or [Disko examples](https://github.com/nix-community/disko/tree/master/example).
### (Optional): Renaming Machine
For renaming jon to your own machine name, you can use the following command:
```
git mv ./machines/jon ./machines/newname
```
Note that our clan lives inside a git repository.
Only files that have been added with `git add` are recognized by `nix`.
So for every file that you add or rename you also need to run:
```
git add ./path/to/my/file
```
### (Optional): Removing a Machine
If you only want to setup a single machine at this point, you can delete `sara` from `flake.nix` as well as from the machines directory:
```
git rm -rf ./machines/sara
```