nix-config/hosts/trantor/nginx.nix
William 58fec03579 Switch ACME to DNS-01 challenge with auto-configured certificates
Changed certificate generation from HTTP-01 to DNS-01 challenge to support
services behind Tailscale/CGNAT IPs. HTTP-01 challenges fail because Let's
Encrypt cannot reach private Tailscale IPs (100.x.x.x) that Cloudflare DNS
points to.

Changes:
- Pre-configure certificates in security.acme.certs using DNS-01 via Cloudflare
- Auto-generate certificate configs from shared/services.nix
  - Alexandria: filters services with host == "alexandria"
  - Trantor: filters services with host == "trantor"
- Updated mkNginxVHosts to use useACMEHost instead of enableACME
- Each domain gets its own certificate configured with DNS-01 challenge

This ensures all services get valid Let's Encrypt certificates even when
accessible only through Tailscale or private networks.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
2025-11-08 22:53:18 -03:00

61 lines
1.2 KiB
Nix

{
config,
lib,
inputs,
...
}:
let
utils = import ../../utils.nix { inherit inputs lib; };
inherit (utils) mkNginxVHosts services;
# Get all unique domains from shared services on trantor (host = "trantor")
localDomains = lib.unique (
map (s: s.domain) (lib.filter (s: s.host == "trantor") services)
);
# Generate ACME cert configs for all local domains
acmeCerts = lib.genAttrs localDomains (domain: {
group = "nginx";
});
in
{
security.acme = {
acceptTerms = true;
defaults = {
email = "baduhai@proton.me";
dnsResolver = "1.1.1.1:53";
dnsProvider = "cloudflare";
credentialsFile = config.age.secrets.cloudflare.path;
};
certs = acmeCerts;
};
services.nginx = {
enable = true;
recommendedGzipSettings = true;
recommendedOptimisation = true;
recommendedProxySettings = true;
recommendedTlsSettings = true;
virtualHosts = {
"_" = {
default = true;
locations."/".return = "444";
};
};
};
users.users.nginx.extraGroups = [ "acme" ];
networking.firewall.allowedTCPPorts = [
80
443
];
age.secrets.cloudflare = {
file = ../../secrets/cloudflare.age;
owner = "nginx";
group = "nginx";
};
}