add grafana host

hosts/storage-ng/grafana/configuration.nix

@@ -0,0 +1,101 @@
+{ config, pkgs, lib, ... }:
+
+{
+  imports =
+    [ <nixpkgs/nixos/modules/profiles/minimal.nix>
+    ];
+  nix.useSandbox = false;
+  nix.maxJobs = lib.mkDefault 2;
+  nix.buildCores = lib.mkDefault 16;
+
+  boot.isContainer = true;
+  # /sbin/init
+  boot.loader.initScript.enable = true;
+  boot.loader.grub.enable = false;
+
+  fileSystems."/" = { fsType = "rootfs"; device = "rootfs"; };
+
+  networking.hostName = "grafana";
+  networking.useNetworkd = true;
+  networking.defaultGateway = "172.22.99.4";
+
+  # Set your time zone.
+  time.timeZone = "Europe/Berlin";
+  # Select internationalisation properties.
+  i18n = {
+    defaultLocale = "en_US.UTF-8";
+    supportedLocales = lib.mkForce [ "en_US.UTF-8/UTF-8" ];
+  };
+
+  # List packages installed in system profile. To search, run:
+  # $ nix search wget
+  environment.systemPackages = with pkgs; [
+    vim
+  ];
+
+  # Create a few files early before packing tarball for Proxmox
+  # architecture/OS detection.
+  system.extraSystemBuilderCmds = 
+      ''
+          mkdir -m 0755 -p $out/bin
+          ln -s ${pkgs.bash}/bin/bash $out/bin/sh
+          mkdir -m 0755 -p $out/sbin
+          ln -s ../init $out/sbin/init
+      '';
+
+
+  # http https
+  networking.firewall.allowedTCPPorts = [ 80 443 ];
+  # collectd
+  networking.firewall.allowedUDPPorts = [ 25826 ];
+
+  services.caddy = {
+    enable = true;
+    agree = true;
+    config = ''
+        grafana.hq.c3d2.de
+        proxy / localhost:3000
+    '';
+  };
+  services.grafana = {
+    enable = true;
+    auth.anonymous = {
+      enable = true;
+      org_name = "Chaos";
+    };
+    users.allowSignUp = true;
+  };
+  services.influxdb =
+    let
+      collectdTypes = pkgs.stdenv.mkDerivation {
+        name = "collectd-types";
+        src = ./.;
+        buildInputs = [ pkgs.collectd ];
+        buildPhase = ''
+            mkdir -p $out/share/collectd
+            cat ${pkgs.collectd}/share/collectd/types.db >> $out/share/collectd/types.db
+            echo "stations  value:GAUGE:0:U" >> $out/share/collectd/types.db
+        '';
+        installPhase = ''
+            cp -r . $out
+        '';
+      };
+    in {
+      enable = true;
+      extraConfig = {
+        logging.level = "debug";
+        collectd = [{
+          enabled = true;
+          database = "collectd";
+          typesdb = "${collectdTypes}/share/collectd/types.db";
+        }];
+      };    
+    };
+
+  # This value determines the NixOS release with which your system is to be
+  # compatible, in order to avoid breaking some software such as database
+  # servers. You should change this only after NixOS release notes say you
+  # should.
+  system.stateVersion = "18.09"; # Did you read the comment?
+}
+