Numbus/modules/server/services/applications/netbird.nix

{ config, pkgs, lib, ... }:

with lib;

let
  # Container config
  name = "netbird";
  # Version tagging
  netbirdDashboardVersion = "";
  netbirdServerVersion = "";
  # Helper
  helper = import ../service-helper.nix { inherit config pkgs lib; };
  cfg = config.numbus-server.services.netbird;
in

helper.mkPodmanService {
  inherit name;
  pod = "false";
  description = "NetBird, an all-in-one ZTNA remote access platform";
  defaultPort = "8888";
  reverseProxied = false;
  dependencies = [
    "sops-install-secrets.service"
    "traefik.service"
    "${config.numbus-server.services.dns}.service"
  ];
  dirPermissions = [
    "100999:100 ${cfg.configDir}"
  ];
  secrets = [
    "netbird/auth_key"
    "netbird/encryption_key"
  ];

  composeText = ''
    services:
      netbird-dashboard:
        image: netbirdio/dashboard:${netbirdDashboardVersion}
        container_name: netbird-dashboard
        hostname: netbird-dashboard
        user: '1000:1000'
        networks:
          netbird:
            ipv4_address: 10.89.175.253
        ports:
          - "${defaultPort}:8080/tcp"
        environment:
          # Endpoints
          - NETBIRD_MGMT_API_ENDPOINT=https://${cfg.subdomain}.${config.numbus-server.services.domain}
          - NETBIRD_MGMT_GRPC_API_ENDPOINT=https://${cfg.subdomain}.${config.numbus-server.services.domain}
          # OIDC - using embedded IdP
          - AUTH_AUDIENCE=netbird-dashboard
          - AUTH_CLIENT_ID=netbird-dashboard
          - AUTH_CLIENT_SECRET=
          - AUTH_AUTHORITY=https://${cfg.subdomain}.${config.numbus-server.services.domain}/oauth2
          - USE_AUTH0=false
          - AUTH_SUPPORTED_SCOPES=openid profile email groups
          - AUTH_REDIRECT_URI=/nb-auth
          - AUTH_SILENT_REDIRECT_URI=/nb-silent-auth
          # SSL
          - NGINX_SSL_PORT=443
          - LETSENCRYPT_DOMAIN=none
        logging:
          driver: "json-file"
          options:
            max-size: "500m"
            max-file: "2"
        security_opt:
          - no-new-privileges:true
        cap_drop:
          - NET_RAW
        restart: unless-stopped

      netbird-server:
        image: netbirdio/netbird-server:${netbirdServerVersion}
        container_name: netbird-server
        hostname: netbird-server
        user: '1000:1000'
        networks:
          netbird:
            ipv4_address: 10.89.175.252
        ports:
          - "8889:8081/tcp"
          - "3478:3478/udp"
        volumes:
          - ${config.sops.templates."netbird-config".path}:/etc/netbird/config.yaml
          - ${cfg.configDir}:/var/lib/netbird
        command: ["--config", "/etc/netbird/config.yaml"]
        logging:
          driver: "json-file"
          options:
            max-size: "500m"
            max-file: "2"
        security_opt:
          - no-new-privileges:true
        cap_drop:
          - NET_RAW
        restart: unless-stopped

    networks:
      netbird:
        driver: bridge
        name: netbird
        ipam:
          config:
            - subnet: "10.89.175.0/24"
              gateway: "10.89.175.254"
  '';

  extraConfig = {
    sops.templates."netbird-config" = {
      gid = "100";
      uid = "100999";
      mode = "0400";
      content = ''
        server:
          listenAddress: ":80"
          exposedAddress: "https://${cfg.subdomain}.${config.numbus-server.services.domain}:443"
          stunPorts:
            - 3478
          metricsPort: 9090
          healthcheckAddress: ":9000"
          logLevel: "info"
          logFile: "console"
          authSecret: "${config.sops.placeholder."netbird/auth_key"}"
          dataDir: "/var/lib/netbird"

          auth:
            issuer: "https://${cfg.subdomain}.${config.numbus-server.services.domain}/oauth2"
            signKeyRefreshEnabled: true
            dashboardRedirectURIs:
              - "https://${cfg.subdomain}.${config.numbus-server.services.domain}/nb-auth"
              - "https://${cfg.subdomain}.${config.numbus-server.services.domain}/nb-silent-auth"
            cliRedirectURIs:
              - "http://localhost:53000/"

          reverseProxy:
            trustedHTTPProxies:
              - "10.89.175.1/32"

          store:
            engine: "sqlite"
            encryptionKey: "${config.sops.placeholder."netbird/encryption_key"}"
      '';
      path = "/etc/netbird/netbird.yaml";
    };

    sops.templates."traefik/rules/${name}" = {
      gid = "100";
      uid = "1000";
      mode = "0400";
      content = ''
        http:
          routers:
            ${name}-dashboard:
              rule: "Host(`${cfg.subdomain}.${config.numbus-server.services.domain}`)"
              entrypoints:
                - "websecure"
              middlewares:
                - secureHeaders
              tls:
                certresolver: "cloudflare"
                options: "secureTLS"
              priority: 1
            ${name}-grpc:
              rule: "Host(`${cfg.subdomain}.${config.numbus-server.services.domain}`) && (PathPrefix(`/signalexchange.SignalExchange/`) || PathPrefix(`/management.ManagementService/`))"
              entrypoints:
                - "websecure"
              service: ${name}-server-h2c
              middlewares:
                - secureHeaders
              tls:
                certresolver: "cloudflare"
                options: "secureTLS"
            ${name}-backend:
              rule: "Host(`${cfg.subdomain}.${config.numbus-server.services.domain}`) && (PathPrefix(`/relay`) || PathPrefix(`/ws-proxy/`) || PathPrefix(`/api`) || PathPrefix(`/oauth2`))"
              entrypoints:
                - "websecure"
              service: ${name}-server
              middlewares:
                - secureHeaders
              tls:
                certresolver: "cloudflare"
                options: "secureTLS"

          services:${cfg.port}
            ${name}-dashboard:
              loadBalancer:
                servers:
                  - url: "http://host.containers.internal:${cfg.port}"
            ${name}-server:
              loadBalancer:
                servers:
                  - url: "http://host.containers.internal:8889"
            ${name}-server-h2c:
              loadBalancer:
                servers:
                  - url: "h2c://host.containers.internal:3478"
      '';
      path = "/etc/traefik/rules/${name}";
    };
  };
}