diff --git a/krebs/1systems/wolf/config.nix b/krebs/1systems/wolf/config.nix
index a9e8aafee..0160f9ebb 100644
--- a/krebs/1systems/wolf/config.nix
+++ b/krebs/1systems/wolf/config.nix
@@ -27,6 +27,8 @@ in
     <stockholm/krebs/2configs/shack/muellshack.nix>
     # provide light control api
     <stockholm/krebs/2configs/shack/node-light.nix>
+    # light.shack web-ui
+    <stockholm/krebs/2configs/shack/light.shack.nix>
     # send mail if muell was not handled
     <stockholm/krebs/2configs/shack/muell_mail.nix>
     # send mail if muell was not handled
diff --git a/krebs/2configs/shack/light.shack.nix b/krebs/2configs/shack/light.shack.nix
new file mode 100644
index 000000000..8e01cb1bf
--- /dev/null
+++ b/krebs/2configs/shack/light.shack.nix
@@ -0,0 +1,12 @@
+{ config, pkgs, ... }:
+let
+  light-shack-src = pkgs.fetchgit {
+      url = "https://git.shackspace.de/rz/standby.shack";
+      rev = "e1b90a0a";
+      sha256 = "07fmz63arc5rxa0a3778srwz0jflp4ad6xnwkkc56hwybby0bclh";
+    };
+  web-dir = "${light-shack-src}/client/www/";
+in
+{
+  services.nginx.virtualHosts."light.shack".locations."/".root = web-dir;
+}
diff --git a/krebs/2configs/shack/muell_mail.nix b/krebs/2configs/shack/muell_mail.nix
index 409278954..481564719 100644
--- a/krebs/2configs/shack/muell_mail.nix
+++ b/krebs/2configs/shack/muell_mail.nix
@@ -4,8 +4,8 @@ let
   pkg = pkgs.callPackage (
     pkgs.fetchgit {
       url = "https://git.shackspace.de/rz/muell_mail";
-      rev = "57b67c95052d90044137b2c89007a371dc389afd";
-      sha256 = "1grkzs6fxjnc2bv4kskj63d5sb4qxz6yyr85nj0da9hn7qkk4jkj";
+      rev = "c3e43687879f95e01a82ef176fa15678543b2eb8";
+      sha256 = "0hgchwam5ma96s2v6mx2jfkh833psadmisjbm3k3153rlxp46frx";
     }) { mkYarnPackage = pkgs.yarn2nix-moretea.mkYarnPackage; };
     home = "/var/lib/muell_mail";
     cfg = toString <secrets/shack/muell_mail.js>;
diff --git a/krebs/2configs/shack/prometheus/alertmanager-telegram.nix b/krebs/2configs/shack/prometheus/alertmanager-telegram.nix
index 2df63e520..8527001cb 100644
--- a/krebs/2configs/shack/prometheus/alertmanager-telegram.nix
+++ b/krebs/2configs/shack/prometheus/alertmanager-telegram.nix
@@ -8,7 +8,7 @@
       DynamicUser = true;
       StateDirectory = "alertbot";
       ExecStart = ''${pkgs.alertmanager-bot-telegram}/bin/alertmanager-bot \
-        --alertmanager.url=http://alert.prometheus.shack --log.level=debug \
+        --alertmanager.url=http://alert.prometheus.shack --log.level=info \
         --store=bolt --bolt.path=/var/lib/alertbot/bot.db \
         --listen.addr="0.0.0.0:16320" \
         --template.paths=${./templates}/shack.tmpl'';
diff --git a/makefu/2configs/stats/server.nix b/makefu/2configs/stats/server.nix
index bb8fd1750..a2d0693ab 100644
--- a/makefu/2configs/stats/server.nix
+++ b/makefu/2configs/stats/server.nix
@@ -41,40 +41,7 @@ in {
       bind-address = ":${toString collectd-port}";
     }];
   };
-  krebs.kapacitor =
-   let
-      echoToIrc = pkgs.writeDash "echo_irc" ''
-        set -euf
-        data="$(${pkgs.jq}/bin/jq -r .message)"
-        export LOGNAME=${irc-nick}
-        ${pkgs.irc-announce}/bin/irc-announce \
-          ${irc-server} 6667 ${irc-nick} \#noise "$data" >/dev/null
-      '';
-  in {
-    enable = true;
-    alarms = {
-      cpu_deadman.database = db;
-      cpu_deadman.text = ''
-        var data = batch
-            |query(${"'''"}
-                  SELECT mean("value") AS mean
-                  FROM "collectd_db"."default"."cpu_value"
-                  WHERE "type_instance" = 'idle' AND "type" = 'percent' fill(0)
-                ${"'''"})
-                .period(10m)
-                .every(1m)
-                .groupBy('host')
-        data |alert()
-                .crit(lambda: "mean" < 50)
-                .stateChangesOnly()
-                .exec('${echoToIrc}')
-        data |deadman(1.0,5m)
-                .stateChangesOnly()
-                .exec('${echoToIrc}')
-      '';
-    };
 
-  };
   networking.firewall.extraCommands = ''
     iptables -A INPUT -i retiolum -p udp --dport ${toString collectd-port} -j ACCEPT
     iptables -A INPUT -i retiolum -p tcp --dport ${toString influx-port} -j ACCEPT
diff --git a/makefu/5pkgs/tt-rss/default.nix b/makefu/5pkgs/tt-rss/default.nix
new file mode 100644
index 000000000..4907a73a5
--- /dev/null
+++ b/makefu/5pkgs/tt-rss/default.nix
@@ -0,0 +1,25 @@
+{ stdenv, fetchurl }:
+
+stdenv.mkDerivation rec {
+  pname = "tt-rss";
+  version = "2020-09-23";
+  rev = "d0ed7890df";
+
+  src = fetchurl {
+    url = "https://git.tt-rss.org/git/tt-rss/archive/${rev}.tar.gz";
+    sha256 = "1b2fczd41bqg9bq37r99svrqswr9qrp35m6gn3nz032yqcwc22ij";
+  };
+
+  installPhase = ''
+    mkdir $out
+    cp -ra * $out/
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Web-based news feed (RSS/Atom) aggregator";
+    license = licenses.gpl2Plus;
+    homepage = "https://tt-rss.org";
+    maintainers = with maintainers; [ globin zohl ];
+    platforms = platforms.all;
+  };
+}