shared wolf: enable collectd towards heidi

shared/1systems/wolf.nix

@@ -5,6 +5,7 @@ with lib;
 {
   imports = [
     <nixpkgs/nixos/modules/profiles/qemu-guest.nix>
+    ../2configs/collectd-base.nix
   ];
 
   krebs.build.host = config.krebs.hosts.wolf;

shared/2configs/collectd-base.nix

@@ -0,0 +1,41 @@
+{ config, lib, pkgs, ... }:
+
+# TODO: krebs.collectd.plugins
+with lib;
+let
+  connect-time-cfg = with pkgs; writeText "collectd-connect-time.conf" ''
+    LoadPlugin python
+    <Plugin python>
+      ModulePath "${collectd-connect-time}/lib/${python.libPrefix}/site-packages/"
+      Import "collectd_connect_time"
+      <Module collectd_connect_time>
+        target "heidi.retiolum:8080" "localhost" "google.com" "google.de" "omo.retiolum" "gum.retiolum" "gum.krebsco.de"
+        interval 10
+      </Module>
+    </Plugin>
+  '';
+  graphite-cfg = pkgs.writeText "collectd-graphite.conf" ''
+    LoadPlugin write_graphite
+    <Plugin "write_graphite">
+      <Carbon>
+        Host "heidi.retiolum"
+        Port "2003"
+        Prefix "retiolum."
+        EscapeCharacter "_"
+        StoreRates false
+        AlwaysAppendDS false
+      </Carbon>
+    </Plugin>
+  '';
+in {
+  imports = [ ];
+
+  nixpkgs.config.packageOverrides = pkgs: with pkgs; {
+    collectd = pkgs.collectd.override { python= pkgs.python; };
+  };
+  services.collectd = {
+    enable = true;
+    include = [ (toString connect-time-cfg) (toString graphite-cfg) ];
+  };
+
+}