nixos-servers/kubenix-modules/pihole.nix

{ myLib, ... }: {
  kubernetes.resources = {
    secrets.pihole.stringData.webPassword = "ref+sops://secrets/kubernetes.yaml#/pihole/password";

    deployments.pihole.spec = {
      selector.matchLabels.app = "pihole";

      strategy = {
        type = "RollingUpdate";

        rollingUpdate = {
          maxSurge = 0;
          maxUnavailable = 1;
        };
      };

      template = {
        metadata.labels.app = "pihole";

        spec = {
          containers.pihole = {
            image = myLib.globals.images.pihole;

            env = {
              TZ.value = "Europe/Amsterdam";
              PIHOLE_DNS_.value = "192.168.30.1";

              WEBPASSWORD.valueFrom.secretKeyRef = {
                name = "pihole";
                key = "webPassword";
              };
            };

            ports = {
              web.containerPort = 80;

              dns = {
                containerPort = 53;
                protocol = "UDP";
              };
            };

            volumeMounts = [
              {
                name = "data";
                mountPath = "/etc/pihole";
              }
              {
                name = "dnsmasq";
                mountPath = "/etc/dnsmasq.d";
              }
            ];
          };

          volumes = {
            data.persistentVolumeClaim.claimName = "pihole-data";
            dnsmasq.persistentVolumeClaim.claimName = "pihole-dnsmasq";
          };

          securityContext = {
            fsGroup = 1000;
            fsGroupChangePolicy = "OnRootMismatch";
          };
        };
      };
    };

    services = {
      pihole.spec = {
        type = "LoadBalancer";
        loadBalancerIP = myLib.globals.piholeIPv4;
        selector.app = "pihole";

        ports = {
          dns = {
            protocol = "UDP";
            port = 53;
            targetPort = "dns";
          };

          web = {
            port = 80;
            targetPort = "web";
          };
        };
      };
    };
  };

  lab = {
    longhorn.persistentVolumeClaim = {
      pihole-data = {
        volumeName = "pihole-data";
        storage = "750Mi";
      };

      pihole-dnsmasq = {
        volumeName = "pihole-dnsmasq";
        storage = "16Mi";
      };
    };

    tailscaleIngresses.tailscale-pihole = {
      host = "pihole";
      service.name = "pihole";
    };
  };
}