forked from CCCHH/nix-infra
Repository containing our nix infrastructure configuration. It's mainly based around Colmena.
c6ristian
59b540c9e3
Flake lock file updates: • Updated input 'nixpkgs': 'github:nixos/nixpkgs/74348da2f3a312ee25cea09b98cdba4cb9fa5d5d?narHash=sha256-6vuViC56%2BKSr%2B945bCV8akHK%2B7J5k6n/epYg/W3I5eQ%3D' (2024-07-14) → 'github:nixos/nixpkgs/556533a23879fc7e5f98dd2e0b31a6911a213171?narHash=sha256-5NctRsoE54N86nWd0psae70YSLfrOek3Kv1e8KoXe/0%3D' (2024-07-21) • Updated input 'nixpkgs-unstable': 'github:nixos/nixpkgs/0af9d835c27984b3265145f8e3cbc6c153479196?narHash=sha256-if0qaFmAe8X01NsVRK5e9Asg9mEWVkHrA9WuqM5jB70%3D' (2024-07-14) → 'github:nixos/nixpkgs/4cc8b29327bed3d52b40041f810f49734298af46?narHash=sha256-jfF4gpRUpTBY2OxDB0FRySsgNGOiuDckEtu7YDQom3Y%3D' (2024-07-21) • Updated input 'sops-nix': 'github:Mic92/sops-nix/0703ba03fd9c1665f8ab68cc3487302475164617?narHash=sha256-eTpnrT6yu1vp8C0B5fxHXhgKxHoYMoYTEikQx///jxY%3D' (2024-07-14) → 'github:Mic92/sops-nix/909e8cfb60d83321d85c8d17209d733658a21c95?narHash=sha256-AsvPw7T0tBLb53xZGcUC3YPqlIpdxoSx56u8vPCr6gU%3D' (2024-07-21) • Updated input 'sops-nix/nixpkgs-stable': 'github:NixOS/nixpkgs/74348da2f3a312ee25cea09b98cdba4cb9fa5d5d?narHash=sha256-6vuViC56%2BKSr%2B945bCV8akHK%2B7J5k6n/epYg/W3I5eQ%3D' (2024-07-14) → 'github:NixOS/nixpkgs/556533a23879fc7e5f98dd2e0b31a6911a213171?narHash=sha256-5NctRsoE54N86nWd0psae70YSLfrOek3Kv1e8KoXe/0%3D' (2024-07-21) |
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config | ||
modules/services/audio | ||
.gitignore | ||
.sops.yaml | ||
deployment_configuration.json | ||
flake.lock | ||
flake.nix | ||
README.md |
nix-infra
nix infrastructure configuration for CCCHH.
For deployment we're using infra-rebuild.
To easily get a shell with infra-rebuild
going, use the following command:
nix shell git+https://git.hamburg.ccc.de/CCCHH/infra-rebuild#infra-rebuild
After that you can simply run the following to deploy e.g. the git and matrix hosts:
infra-rebuild switch git matrix
By default infra-rebuild tries to use the FQDN from the nixosConfiguration of the host for deployment.
However to override individual parts of the deployment target, a deployment_configuration.json
can be used.
This is exactly what we're doing to set the default deployment user to colmena-deploy
and have custom target hostnames for Chaosknoten hosts, since they don't have an FQDN defined in their nixosConfiguration.
Setting up secrets with sops-nix for a host
- Convert the hosts SSH host public key to an age public key.
This can be done by connecting to the host and running:
cat /etc/ssh/ssh_host_ed25519_key.pub | ssh-to-age
- Add the resulting age public key to the
.sops.yaml
as a YAML anchor in keys. It should be named something like:host_age_hostname
- Add a new creation rule for the hosts config directory.
It should probably have all admin keys and the hosts age key.
You can use existing creation rules as a reference. - Create a file containing the relevant secrets in the hosts config directory.
This can be accomplished with a command similar to this:
Note: Nested keys don't seem to be compatible with sops-nix.sops config/hosts/hostname/secrets.yaml
- Add the following entry to the modules of the hosts
nixosConfiguration
:sops-nix.nixosModules.sops
- Create a
sops.nix
in the hosts config directory containing the following content to include thesecrets.yaml
:{ ... }: { sops = { defaultSopsFile = ./secrets.yaml; }; }
- Make sure the
sops.nix
gets imported. For example in thedefault.nix
. - To use a secret stored under e.g.
forgejo_git_smtp_password
, you can then do something like the following:
This secret would then be available undersops.secrets."forgejo_git_smtp_password" = { mode = "0440"; owner = "forgejo"; group = "forgejo"; restartUnits = [ "forgejo.service" ]; };
/run/secrets/forgejo_git_smtp_password
on the host.