Merge remote-tracking branch 'origin/master'

24 files changed, 440 insertions, 427 deletions

diff --git a/lass/2configs/AP.nix b/lass/2configs/AP.nix
new file mode 100644
index 000000000..5ce7cfff8
--- /dev/null
+++ b/lass/2configs/AP.nix
@@ -0,0 +1,77 @@
+{ config, pkgs, ... }:
+with import <stockholm/lib>;
+let
+  wifi = "wlp0s29u1u2";
+in {
+  boot.extraModulePackages = [
+    pkgs.linuxPackages.rtl8814au
+  ];
+  networking.networkmanager.unmanaged = [ wifi ];
+
+  systemd.services.hostapd = {
+    description = "hostapd wireless AP";
+    path = [ pkgs.hostapd ];
+    wantedBy = [ "network.target" ];
+
+    after = [ "${wifi}-cfg.service" "nat.service" "bind.service" "dhcpd.service" "sys-subsystem-net-devices-${wifi}.device" ];
+
+    serviceConfig = {
+      ExecStart = "${pkgs.hostapd}/bin/hostapd ${pkgs.writeText "hostapd.conf" ''
+        interface=${wifi}
+        hw_mode=a
+        channel=36
+        ieee80211d=1
+        country_code=DE
+        ieee80211n=1
+        ieee80211ac=1
+        wmm_enabled=1
+
+        # 5ghz
+        ssid=krebsing
+        auth_algs=1
+        wpa=2
+        wpa_key_mgmt=WPA-PSK
+        rsn_pairwise=CCMP
+        wpa_passphrase=aidsballz
+      ''}";
+      Restart = "always";
+    };
+  };
+
+  networking.interfaces.${wifi}.ipv4.addresses = [
+    { address = "10.99.0.1"; prefixLength = 24; }
+  ];
+  services.dhcpd4 = {
+    enable = true;
+    interfaces = [ wifi ];
+    extraConfig = ''
+      option subnet-mask 255.255.255.0;
+      option routers 10.99.0.1;
+      option domain-name-servers 1.1.1.1, 8.8.8.8;
+      subnet 10.99.0.0 netmask 255.255.255.0 {
+        range 10.99.0.100 10.99.0.200;
+      }
+    '';
+  };
+
+  boot.kernel.sysctl."net.ipv4.ip_forward" = 1;
+  krebs.iptables.tables.filter.FORWARD.rules = [
+    { v6 = false; predicate = "-d 10.99.0.0/24 -o ${wifi} -m conntrack --ctstate RELATED,ESTABLISHED"; target = "ACCEPT"; }
+    { v6 = false; predicate = "-s 10.99.0.0/24 -i ${wifi}"; target = "ACCEPT"; }
+    { v6 = false; predicate = "-i ${wifi} -o ${wifi}"; target = "ACCEPT"; }
+    { v6 = false; predicate = "-o ${wifi}"; target = "REJECT --reject-with icmp-port-unreachable"; }
+    { v6 = false; predicate = "-i ${wifi}"; target = "REJECT --reject-with icmp-port-unreachable"; }
+  ];
+  krebs.iptables.tables.nat.PREROUTING.rules = [
+    { v6 = false; predicate = "-s 10.99.0.0/24"; target = "ACCEPT"; precedence = 1000; }
+  ];
+  krebs.iptables.tables.nat.POSTROUTING.rules = [
+    #TODO find out what this is about?
+    { v6 = false; predicate = "-s 10.99.0.0/24 -d 224.0.0.0/24"; target = "RETURN"; }
+    { v6 = false; predicate = "-s 10.99.0.0/24 -d 255.255.255.255"; target = "RETURN"; }
+
+    { v6 = false; predicate = "-s 10.99.0.0/24 ! -d 10.99.0.0/24"; target = "MASQUERADE"; }
+    { v6 = false; predicate = "-s 10.99.0.0/24 ! -d 10.99.0.0/24 -p tcp"; target = "MASQUERADE --to-ports 1024-65535"; }
+    { v6 = false; predicate = "-s 10.99.0.0/24 ! -d 10.99.0.0/24 -p udp"; target = "MASQUERADE --to-ports 1024-65535"; }
+  ];
+}
diff --git a/lass/2configs/backup.nix b/lass/2configs/backup.nix
new file mode 100644
index 000000000..27adf6d2a
--- /dev/null
+++ b/lass/2configs/backup.nix
@@ -0,0 +1,20 @@
+{ config, lib, ... }:
+with import <stockholm/lib>;
+
+{
+  fileSystems = {
+    "/backups" = {
+      device = "/dev/pool/backup";
+      fsType = "ext4";
+    };
+  };
+  users.users.backup = {
+    useDefaultShell = true;
+    home = "/backups";
+    createHome = true;
+    openssh.authorizedKeys.keys = with config.krebs.hosts; [
+      mors.ssh.pubkey
+      prism.ssh.pubkey
+    ];
+  };
+}
diff --git a/lass/2configs/backups.nix b/lass/2configs/backups.nix
deleted file mode 100644
index c4fb85420..000000000
--- a/lass/2configs/backups.nix
+++ /dev/null
@@ -1,173 +0,0 @@
-{ config, lib, ... }:
-with import <stockholm/lib>;
-{
-
-  # TODO add timerConfig to krebs.backup and randomize startup
-  # TODO define plans more abstract
-  krebs.backup.plans = {
-  } // mapAttrs (_: recursiveUpdate {
-    snapshots = {
-      daily    = { format = "%Y-%m-%d"; retain =  7; };
-      weekly   = { format = "%YW%W";    retain =  4; };
-      monthly  = { format = "%Y-%m";    retain = 12; };
-      yearly   = { format = "%Y";                    };
-    };
-  }) {
-    dishfire-http-prism = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.prism;    path = "/bku/dishfire-http"; };
-      startAt = "03:00";
-    };
-    dishfire-http-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.icarus;   path = "/bku/dishfire-http"; };
-      startAt = "03:10";
-    };
-    dishfire-http-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.mors;     path = "/bku/dishfire-http"; };
-      startAt = "03:05";
-    };
-    dishfire-http-shodan = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.shodan;   path = "/bku/dishfire-http"; };
-      startAt = "03:10";
-    };
-    dishfire-sql-prism = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.prism;    path = "/bku/dishfire-sql"; };
-      startAt = "03:15";
-    };
-    dishfire-sql-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.icarus;   path = "/bku/dishfire-sql"; };
-      startAt = "03:25";
-    };
-    dishfire-sql-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.mors;     path = "/bku/dishfire-sql"; };
-      startAt = "03:20";
-    };
-    dishfire-sql-shodan = {
-      method = "pull";
-      src = { host = config.krebs.hosts.dishfire; path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.shodan;   path = "/bku/dishfire-sql"; };
-      startAt = "03:25";
-    };
-    prism-bitlbee-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/var/lib/bitlbee"; };
-      dst = { host = config.krebs.hosts.icarus; path = "/bku/prism-bitlbee"; };
-      startAt = "03:25";
-    };
-    prism-bitlbee-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism; path = "/var/lib/bitlbee"; };
-      dst = { host = config.krebs.hosts.mors;  path = "/bku/prism-bitlbee"; };
-      startAt = "03:25";
-    };
-    prism-bitlbee-shodan = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/var/lib/bitlbee"; };
-      dst = { host = config.krebs.hosts.shodan; path = "/bku/prism-bitlbee"; };
-      startAt = "03:25";
-    };
-    prism-chat-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/home/chat"; };
-      dst = { host = config.krebs.hosts.icarus; path = "/bku/prism-chat"; };
-      startAt = "03:35";
-    };
-    prism-chat-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism; path = "/home/chat"; };
-      dst = { host = config.krebs.hosts.mors;  path = "/bku/prism-chat"; };
-      startAt = "03:30";
-    };
-    prism-chat-shodan = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/home/chat"; };
-      dst = { host = config.krebs.hosts.shodan; path = "/bku/prism-chat"; };
-      startAt = "03:35";
-    };
-    prism-sql-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.icarus; path = "/bku/prism-sql_dumps"; };
-      startAt = "03:45";
-    };
-    prism-sql-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism; path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.mors;  path = "/bku/prism-sql_dumps"; };
-      startAt = "03:40";
-    };
-    prism-sql-shodan = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/bku/sql_dumps"; };
-      dst = { host = config.krebs.hosts.shodan; path = "/bku/prism-sql_dumps"; };
-      startAt = "03:45";
-    };
-    prism-http-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.icarus; path = "/bku/prism-http"; };
-      startAt = "03:55";
-    };
-    prism-http-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism; path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.mors;  path = "/bku/prism-http"; };
-      startAt = "03:50";
-    };
-    prism-http-shodan = {
-      method = "pull";
-      src = { host = config.krebs.hosts.prism;  path = "/srv/http"; };
-      dst = { host = config.krebs.hosts.shodan; path = "/bku/prism-http"; };
-      startAt = "03:55";
-    };
-    icarus-home-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.icarus; path = "/home"; };
-      dst = { host = config.krebs.hosts.mors;   path = "/bku/icarus-home"; };
-      startAt = "05:00";
-    };
-    icarus-home-shodan = {
-      method = "push";
-      src = { host = config.krebs.hosts.icarus; path = "/home"; };
-      dst = { host = config.krebs.hosts.shodan; path = "/bku/icarus-home"; };
-      startAt = "05:00";
-    };
-    mors-home-icarus = {
-      method = "push";
-      src = { host = config.krebs.hosts.mors;   path = "/home"; };
-      dst = { host = config.krebs.hosts.icarus; path = "/bku/mors-home"; };
-      startAt = "05:00";
-    };
-    mors-home-shodan = {
-      method = "push";
-      src = { host = config.krebs.hosts.mors;   path = "/home"; };
-      dst = { host = config.krebs.hosts.shodan; path = "/bku/mors-home"; };
-      startAt = "05:00";
-    };
-    shodan-home-icarus = {
-      method = "pull";
-      src = { host = config.krebs.hosts.shodan; path = "/home"; };
-      dst = { host = config.krebs.hosts.icarus; path = "/bku/shodan-home"; };
-      startAt = "04:00";
-    };
-    shodan-home-mors = {
-      method = "pull";
-      src = { host = config.krebs.hosts.shodan; path = "/home"; };
-      dst = { host = config.krebs.hosts.mors;   path = "/bku/shodan-home"; };
-      startAt = "04:00";
-    };
-  };
-}
diff --git a/lass/2configs/baseX.nix b/lass/2configs/baseX.nix
index ed179ded6..e2e44b6fc 100644
--- a/lass/2configs/baseX.nix
+++ b/lass/2configs/baseX.nix
@@ -9,7 +9,6 @@ in {
     ./power-action.nix
     ./copyq.nix
     ./livestream.nix
-    ./dns-stuff.nix
     ./urxvt.nix
     ./network-manager.nix
     {
diff --git a/lass/2configs/bitcoin.nix b/lass/2configs/bitcoin.nix
index a405addfc..9f6fd3bf0 100644
--- a/lass/2configs/bitcoin.nix
+++ b/lass/2configs/bitcoin.nix
@@ -10,9 +10,6 @@ in {
   krebs.per-user.bitcoin.packages = [
     pkgs.electrum
   ];
-  krebs.per-user.ethereum.packages = [
-    pkgs.go-ethereum
-  ];
   users.extraUsers = {
     bch = {
       name = "bch";
@@ -28,13 +25,6 @@ in {
       useDefaultShell = true;
       createHome = true;
     };
-    ethereum = {
-      name = "ethereum";
-      description = "user for ethereum stuff";
-      home = "/home/ethereum";
-      useDefaultShell = true;
-      createHome = true;
-    };
   };
   security.sudo.extraConfig = ''
     ${mainUser.name} ALL=(bitcoin) NOPASSWD: ALL
diff --git a/lass/2configs/dcso-dev.nix b/lass/2configs/dcso-dev.nix
index ae1c7bc8d..b985b67b3 100644
--- a/lass/2configs/dcso-dev.nix
+++ b/lass/2configs/dcso-dev.nix
@@ -9,6 +9,7 @@ in {
     dev = {
       name = "dev";
       uid = genid "dev";
+      extraGroups = [ "docker" ];
       description = "user for collaborative development";
       home = "/home/dev";
       useDefaultShell = true;
diff --git a/lass/2configs/default.nix b/lass/2configs/default.nix
index 5a5f1b347..12a814605 100644
--- a/lass/2configs/default.nix
+++ b/lass/2configs/default.nix
@@ -6,10 +6,9 @@ with import <stockholm/lib>;
     ./gc.nix
     ./mc.nix
     ./vim.nix
-    ./monitoring/client.nix
+    ./monitoring/node-exporter.nix
     ./zsh.nix
     ./htop.nix
-    ./backups.nix
     ./security-workarounds.nix
     {
       users.extraUsers =
diff --git a/lass/2configs/dns-stuff.nix b/lass/2configs/dns-stuff.nix
deleted file mode 100644
index cbcce8df9..000000000
--- a/lass/2configs/dns-stuff.nix
+++ /dev/null
@@ -1,16 +0,0 @@
-{ config, pkgs, ... }:
-with import <stockholm/lib>;
-{
-  services.dnscrypt-proxy = {
-    enable = true;
-    localAddress = "127.1.0.1";
-    customResolver = {
-      address = config.krebs.hosts.gum.nets.internet.ip4.addr;
-      port = 15251;
-      name = "2.dnscrypt-cert.euer.krebsco.de";
-      key = "1AFC:E58D:F242:0FBB:9EE9:4E51:47F4:5373:D9AE:C2AB:DD96:8448:333D:5D79:272C:A44C";
-    };
-  };
-  services.resolved.enable = true;
-  services.resolved.fallbackDns = [ "127.1.0.1" ];
-}
diff --git a/lass/2configs/exim-smarthost.nix b/lass/2configs/exim-smarthost.nix
index 4455d2761..e05ed2427 100644
--- a/lass/2configs/exim-smarthost.nix
+++ b/lass/2configs/exim-smarthost.nix
@@ -79,6 +79,7 @@ with import <stockholm/lib>;
       { from = "ovh@lassul.us"; to = lass.mail; }
       { from = "hetzner@lassul.us"; to = lass.mail; }
       { from = "allygator@lassul.us"; to = lass.mail; }
+      { from = "immoscout@lassul.us"; to = lass.mail; }
     ];
     system-aliases = [
       { from = "mailer-daemon"; to = "postmaster"; }
diff --git a/lass/2configs/gc.nix b/lass/2configs/gc.nix
index ad015180a..c5073e384 100644
--- a/lass/2configs/gc.nix
+++ b/lass/2configs/gc.nix
@@ -3,6 +3,6 @@
 with import <stockholm/lib>;
 {
   nix.gc = {
-    automatic = ! elem config.krebs.build.host.name [ "prism" "mors" "helios" ];
+    automatic = ! (elem config.krebs.build.host.name [ "prism" "mors" "helios" ] || config.boot.isContainer);
   };
 }
diff --git a/lass/2configs/git.nix b/lass/2configs/git.nix
index 1fe87c666..43085ba5e 100644
--- a/lass/2configs/git.nix
+++ b/lass/2configs/git.nix
@@ -57,6 +57,16 @@ let
       cgit.desc = "Fork of nix-user-chroot my lethalman";
       cgit.section = "software";
     };
+    nixos-aws = {
+      collaborators = [ {
+        name = "fabio";
+        pubkey = "ssh-rsa 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 ada";
+      } ];
+    };
+    krops = {
+      cgit.desc = "krebs deployment";
+      cgit.section = "software";
+    };
   } // mapAttrs make-public-repo-silent {
   };
 
@@ -70,8 +80,8 @@ let
     import <secrets/repos.nix> { inherit config lib pkgs; }
   );
 
-  make-public-repo = name: { cgit ? {}, ... }: {
-    inherit cgit name;
+  make-public-repo = name: { cgit ? {}, collaborators ? [], ... }: {
+    inherit cgit collaborators name;
     public = true;
     hooks = {
       post-receive = pkgs.git-hooks.irc-announce {
diff --git a/lass/2configs/go.nix b/lass/2configs/go.nix
new file mode 100644
index 000000000..ecf89b298
--- /dev/null
+++ b/lass/2configs/go.nix
@@ -0,0 +1,19 @@
+{ config, lib, pkgs, ... }:
+{
+  krebs.go = {
+    enable = true;
+  };
+  services.nginx = {
+    enable = true;
+    virtualHosts.go = {
+      locations."/".extraConfig = ''
+        proxy_set_header Host go.lassul.us;
+        proxy_pass http://localhost:1337;
+      '';
+      serverAliases = [
+        "go.lassul.us"
+      ];
+    };
+  };
+}
+
diff --git a/lass/2configs/mail.nix b/lass/2configs/mail.nix
index 81db59617..2bb51b50a 100644
--- a/lass/2configs/mail.nix
+++ b/lass/2configs/mail.nix
@@ -206,8 +206,11 @@ in {
     msmtp
     mutt
     pkgs.much
-    pkgs.notmuch
     tag-new-mails
     tag-old-mails
   ];
+
+  nixpkgs.config.packageOverrides = opkgs: {
+    notmuch = (opkgs.notmuch.overrideAttrs (o: { doCheck = false; }));
+  };
 }
diff --git a/lass/2configs/monitoring/client.nix b/lass/2configs/monitoring/client.nix
deleted file mode 100644
index b8c245215..000000000
--- a/lass/2configs/monitoring/client.nix
+++ /dev/null
@@ -1,26 +0,0 @@
-{pkgs, config, ...}:
-with import <stockholm/lib>;
-{
-  services.telegraf = {
-    enable = true;
-
-    extraConfig = {
-      agent.interval = "1s";
-      outputs = {
-        influxdb = {
-          urls = ["http://prism:8086"];
-          database = "telegraf_db";
-          user_agent = "telegraf";
-        };
-      };
-      inputs = {
-        cpu = {
-          percpu = false;
-          totalcpu = true;
-        };
-        mem = {};
-        net = {};
-      };
-    };
-  };
-}
diff --git a/lass/2configs/monitoring/monit-alarms.nix b/lass/2configs/monitoring/monit-alarms.nix
deleted file mode 100644
index 2cfc292e5..000000000
--- a/lass/2configs/monitoring/monit-alarms.nix
+++ /dev/null
@@ -1,44 +0,0 @@
-{pkgs, config, ...}:
-with import <stockholm/lib>;
-let
-  echoToIrc = msg:
-    pkgs.writeDash "echo_irc" ''
-      set -euf
-      export LOGNAME=prism-alarm
-      ${pkgs.irc-announce}/bin/irc-announce \
-        irc.r 6667 ${config.networking.hostName}-alarm \#noise "${msg}" >/dev/null
-    '';
-
-in {
-  krebs.monit = {
-    enable = true;
-    http.enable = true;
-    alarms = {
-      nirwanabluete = {
-        test = "${pkgs.curl}/bin/curl -sf 'https://nirwanabluete.de/'";
-        alarm = echoToIrc "test nirwanabluete failed";
-      };
-      ubik = {
-        test = "${pkgs.curl}/bin/curl -sf 'https://ubikmedia.de'";
-        alarm = echoToIrc "test ubik failed";
-      };
-      cac-panel = {
-        test = "${pkgs.curl}/bin/curl -sf 'https://panel.cloudatcost.com/login.php'";
-        alarm = echoToIrc "test cac-panel failed";
-      };
-      radio = {
-        test = pkgs.writeBash "check_stream" ''
-          ${pkgs.curl}/bin/curl -sif http://lassul.us:8000/radio.ogg \
-          | ${pkgs.gawk}/bin/awk '/^\r$/{exit}{print $0}' \
-          | ${pkgs.gnugrep}/bin/grep -q "200 OK" || exit "''${PIPESTATUS[0]}"
-        '';
-        alarm = echoToIrc "test radio failed";
-      };
-    };
-  };
-
-  krebs.iptables.tables.filter.INPUT.rules = [
-    { predicate = "-p tcp -i retiolum --dport 9093"; target = "ACCEPT"; }
-  ];
-}
-
diff --git a/lass/2configs/monitoring/node-exporter.nix b/lass/2configs/monitoring/node-exporter.nix
new file mode 100644
index 000000000..561e3a25c
--- /dev/null
+++ b/lass/2configs/monitoring/node-exporter.nix
@@ -0,0 +1,15 @@
+{ config, lib, pkgs, ... }:
+{
+  krebs.iptables.tables.filter.INPUT.rules = [
+    { predicate = "-i retiolum -p tcp --dport 9100 -s ${config.krebs.hosts.prism.nets.retiolum.ip4.addr}"; target = "ACCEPT"; v6 = false; }
+    { predicate = "-i retiolum -p tcp --dport 9100 -s ${config.krebs.hosts.prism.nets.retiolum.ip6.addr}"; target = "ACCEPT"; v4 = false; }
+  ];
+  services.prometheus.exporters = {
+    node = {
+      enable = true;
+      enabledCollectors = [
+        "systemd"
+      ];
+    };
+  };
+}
diff --git a/lass/2configs/monitoring/prometheus-server.nix b/lass/2configs/monitoring/prometheus-server.nix
new file mode 100644
index 000000000..e16d421a0
--- /dev/null
+++ b/lass/2configs/monitoring/prometheus-server.nix
@@ -0,0 +1,217 @@
+{ pkgs, lib, config, ... }:
+{
+  #networking = {
+  #  firewall.allowedTCPPorts = [
+  #    3000  # grafana
+  #    9090  # prometheus
+  #    9093  # alertmanager
+  #  ];
+  #  useDHCP = true;
+  #};
+
+  krebs.iptables.tables.filter.INPUT.rules = [
+    { predicate = "-i retiolum -p tcp --dport 3000"; target = "ACCEPT"; }
+    { predicate = "-i retiolum -p tcp --dport 9090"; target = "ACCEPT"; }
+    { predicate = "-i retiolum -p tcp --dport 9093"; target = "ACCEPT"; }
+  ];
+
+  services = {
+    prometheus = {
+      enable = true;
+      extraFlags = [
+        "-storage.local.retention 8760h"
+        "-storage.local.series-file-shrink-ratio 0.3"
+        "-storage.local.memory-chunks 2097152"
+        "-storage.local.max-chunks-to-persist 1048576"
+        "-storage.local.index-cache-size.fingerprint-to-metric 2097152"
+        "-storage.local.index-cache-size.fingerprint-to-timerange 1048576"
+        "-storage.local.index-cache-size.label-name-to-label-values 2097152"
+        "-storage.local.index-cache-size.label-pair-to-fingerprints 41943040"
+      ];
+      alertmanagerURL = [ "http://localhost:9093" ];
+      rules = [
+        ''
+          ALERT node_down
+          IF up == 0
+          FOR 5m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}}: Node is down.",
+            description = "{{$labels.alias}} has been down for more than 5 minutes."
+          }
+          ALERT node_systemd_service_failed
+          IF node_systemd_unit_state{state="failed"} == 1
+          FOR 4m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}}: Service {{$labels.name}} failed to start.",
+            description = "{{$labels.alias}} failed to (re)start service {{$labels.name}}."
+          }
+          ALERT node_filesystem_full_90percent
+          IF sort(node_filesystem_free{device!="ramfs"} < node_filesystem_size{device!="ramfs"} * 0.1) / 1024^3
+          FOR 5m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}}: Filesystem is running out of space soon.",
+            description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} got less than 10% space left on its filesystem."
+          }
+          ALERT node_filesystem_full_in_4h
+          IF predict_linear(node_filesystem_free{device!="ramfs"}[1h], 4*3600) <= 0
+          FOR 5m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}}: Filesystem is running out of space in 4 hours.",
+            description = "{{$labels.alias}} device {{$labels.device}} on {{$labels.mountpoint}} is running out of space of in approx. 4 hours"
+          }
+          ALERT node_filedescriptors_full_in_3h
+          IF predict_linear(node_filefd_allocated[1h], 3*3600) >= node_filefd_maximum
+          FOR 20m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}} is running out of available file descriptors in 3 hours.",
+            description = "{{$labels.alias}} is running out of available file descriptors in approx. 3 hours"
+          }
+          ALERT node_load1_90percent
+          IF node_load1 / on(alias) count(node_cpu{mode="system"}) by (alias) >= 0.9
+          FOR 1h
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}}: Running on high load.",
+            description = "{{$labels.alias}} is running with > 90% total load for at least 1h."
+          }
+          ALERT node_cpu_util_90percent
+          IF 100 - (avg by (alias) (irate(node_cpu{mode="idle"}[5m])) * 100) >= 90
+          FOR 1h
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary = "{{$labels.alias}}: High CPU utilization.",
+            description = "{{$labels.alias}} has total CPU utilization over 90% for at least 1h."
+          }
+          ALERT node_ram_using_90percent
+          IF node_memory_MemFree + node_memory_Buffers + node_memory_Cached < node_memory_MemTotal * 0.1
+          FOR 30m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary="{{$labels.alias}}: Using lots of RAM.",
+            description="{{$labels.alias}} is using at least 90% of its RAM for at least 30 minutes now.",
+          }
+          ALERT node_swap_using_80percent
+          IF node_memory_SwapTotal - (node_memory_SwapFree + node_memory_SwapCached) > node_memory_SwapTotal * 0.8
+          FOR 10m
+          LABELS {
+            severity="page"
+          }
+          ANNOTATIONS {
+            summary="{{$labels.alias}}: Running out of swap soon.",
+            description="{{$labels.alias}} is using 80% of its swap space for at least 10 minutes now."
+          }
+        ''
+      ];
+      scrapeConfigs = [
+        {
+          job_name = "node";
+          scrape_interval = "10s";
+          static_configs = [
+            {
+              targets = [
+              ] ++ map (host: "${host}:9100") (lib.attrNames (lib.filterAttrs (_: host: host.owner.name == "lass" && host.monitoring) config.krebs.hosts));
+              #labels = {
+              #  alias = "prometheus.example.com";
+              #};
+            }
+          ];
+        }
+      ];
+      alertmanager = {
+        enable = true;
+        listenAddress = "0.0.0.0";
+        configuration = {
+          "global" = {
+            "smtp_smarthost" = "smtp.example.com:587";
+            "smtp_from" = "alertmanager@example.com";
+          };
+          "route" = {
+            "group_by" = [ "alertname" "alias" ];
+            "group_wait" = "30s";
+            "group_interval" = "2m";
+            "repeat_interval" = "4h";
+            "receiver" = "team-admins";
+          };
+          "receivers" = [
+            {
+              "name" = "team-admins";
+              "email_configs" = [
+                {
+                  "to" = "devnull@example.com";
+                  "send_resolved" = true;
+                }
+              ];
+              "webhook_configs" = [
+                {
+                  "url" = "http://127.0.0.1:14813/prometheus-alerts";
+                  "send_resolved" = true;
+                }
+              ];
+            }
+          ];
+        };
+      };
+    };
+    grafana = {
+      enable = true;
+      addr = "0.0.0.0";
+      domain = "grafana.example.com";
+      rootUrl = "https://grafana.example.com/";
+      security = import <secrets/grafana_security.nix>; # { AdminUser = ""; adminPassword = ""}
+    };
+  };