Merge remote-tracking branch 'gum/master'

55 files changed, 1602 insertions, 454 deletions

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6d2f15063..fb273c932 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,20 +1,57 @@
 before_script:
-   - mkdir -p ~/.ssh
-   - echo "$deploy_privkey" > deploy.key
-   - export GIT_SSH_COMMAND="ssh -i $PWD/deploy.key"
-   - chmod 600 deploy.key
-   - ssh-keyscan -H 'github.com' >> ~/.ssh/known_hosts
+  - nix-env -iA nixpkgs.openssh nixpkgs.gnupg nixpkgs.curl nixpkgs.git nixpkgs.pass || true
+  # prepare github deployment for NUR
+  - mkdir -p ~/.ssh
+  - echo "$github_deploy_privkey" > ~/.ssh/github_deploy.key
+  - chmod 600 ~/.ssh/github_deploy.key
+  - ssh-keyscan -H 'github.com' >> ~/.ssh/known_hosts
+  # prepare git fetching of secrets
+  - echo "$gitlab_deploy_privkey" > ~/.ssh/gitlab_deploy.key
+  - chmod 600 ~/.ssh/gitlab_deploy.key
+  - ssh-keyscan -H 'ssh.git.shackspace.de' >> ~/.ssh/known_hosts
+  # import secret key for secrets
+  - echo "$secrets_gpg_key" | gpg --import
+wolf deployment test:
+  stage: test
+  script:
+    - GIT_SSH_COMMAND="ssh -i ~/.ssh/gitlab_deploy.key" git clone git@ssh.git.shackspace.de:rz/secrets.git ~/brain
+    - test $(PASSWORD_STORE_DIR=~/brain pass smoke) == 1337
+    - git submodule update --init
+    - $(nix-build krebs/krops.nix --no-out-link --argstr name wolf --argstr target /tmp -A test)
 nix-shell test:
+  stage: test
   script:
-    - env
     - nix-shell --pure --command 'true' -p stdenv && echo success
     - nix-shell --pure --command 'false' -p stdenv || echo success
+    - git --version
+    - ssh -V
+    - gpg --version
+    - curl --version
+wolf deployment:
+  stage: deploy
+  script:
+    - cp ~/.ssh/gitlab_deploy.key ~/.ssh/id_rsa
+    - git clone git@ssh.git.shackspace.de:rz/secrets.git ~/brain
+    - git submodule update --init
+    - ssh-keyscan -H 'wolf.shack' >> ~/.ssh/known_hosts
+    # TODO, hostname wolf cannot be resolved
+    - $(nix-build krebs/krops.nix --no-out-link --argstr name wolf --argstr target wolf.shack -A deploy)
+  only:
+    changes:
+      - .gitlab-ci.yml
+      - krebs/**/*
+      - lib/**/*
+      - .gitmodules
 nur-packages makefu:
+  stage: deploy
   script:
     - git reset --hard origin/master
     - git filter-branch -f --prune-empty --subdirectory-filter makefu/5pkgs HEAD
     - git remote add deploy git@github.com:makefu/nur-packages.git  || git remote set-url deploy git@github.com:makefu/nur-packages.git
-    - git push --force deploy HEAD:master
+    - GIT_SSH_COMMAND="ssh -i ~/.ssh/github_deploy.key" git push --force deploy HEAD:master
     - curl -XPOST http://nur-update.herokuapp.com/update?repo=makefu
+  only:
+    changes:
+      - makefu/**/*
 after_script:
-    - rm -f deploy.key
+    - rm -rf .ssh/
diff --git a/krebs/0tests/data/secrets/shack/muell_mail.js b/krebs/0tests/data/secrets/shack/muell_mail.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/krebs/0tests/data/secrets/shack/muell_mail.js
diff --git a/krebs/0tests/data/secrets/shack/s3-power.json b/krebs/0tests/data/secrets/shack/s3-power.json
new file mode 100644
index 000000000..0967ef424
--- /dev/null
+++ b/krebs/0tests/data/secrets/shack/s3-power.json
@@ -0,0 +1 @@
+{}
diff --git a/krebs/0tests/data/secrets/shack/unifi-prometheus-pw b/krebs/0tests/data/secrets/shack/unifi-prometheus-pw
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/krebs/0tests/data/secrets/shack/unifi-prometheus-pw
diff --git a/krebs/1systems/puyak/config.nix b/krebs/1systems/puyak/config.nix
index af11c6944..ea73e4bd2 100644
--- a/krebs/1systems/puyak/config.nix
+++ b/krebs/1systems/puyak/config.nix
@@ -7,13 +7,14 @@
     <stockholm/krebs/2configs/secret-passwords.nix>
     <stockholm/krebs/2configs/hw/x220.nix>
 
-    <stockholm/krebs/2configs/stats/puyak-client.nix>
     <stockholm/krebs/2configs/binary-cache/nixos.nix>
     <stockholm/krebs/2configs/binary-cache/prism.nix>
     <stockholm/krebs/2configs/go.nix>
     <stockholm/krebs/2configs/ircd.nix>
     <stockholm/krebs/2configs/news.nix>
     <stockholm/krebs/2configs/news-spam.nix>
+    <stockholm/krebs/2configs/shack/prometheus/node.nix>
+    <stockholm/krebs/2configs/shack/gitlab-runner.nix>
   ];
 
   krebs.build.host = config.krebs.hosts.puyak;
@@ -59,9 +60,9 @@
     };
   };
 
-  services.logind.extraConfig = ''
-    HandleLidSwitch=ignore
-  '';
+  services.logind.lidSwitch = "ignore";
+  services.logind.lidSwitchExternalPower = "ignore";
+
 
   services.udev.extraRules = ''
     SUBSYSTEM=="net", ATTR{address}=="8c:70:5a:b2:84:58", NAME="wl0"
diff --git a/krebs/1systems/wolf/config.nix b/krebs/1systems/wolf/config.nix
index 7ca0f0ec1..3cb358ca3 100644
--- a/krebs/1systems/wolf/config.nix
+++ b/krebs/1systems/wolf/config.nix
@@ -23,6 +23,16 @@ in
     # <stockholm/krebs/2configs/shack/nix-cacher.nix>
     # Say if muell will be collected
     <stockholm/krebs/2configs/shack/muell_caller.nix>
+    # provide muellshack api
+    <stockholm/krebs/2configs/shack/muellshack.nix>
+    # provide light control api
+    <stockholm/krebs/2configs/shack/node-light.nix>
+    # send mail if muell was not handled
+    <stockholm/krebs/2configs/shack/muell_mail.nix>
+    # send mail if muell was not handled
+    <stockholm/krebs/2configs/shack/s3-power.nix>
+    # powerraw usb serial to mqtt and raw socket
+    <stockholm/krebs/2configs/shack/powerraw.nix>
 
     # create samba share for anonymous usage with the laser and 3d printer pc
     <stockholm/krebs/2configs/shack/share.nix>
@@ -38,13 +48,20 @@ in
     <stockholm/krebs/2configs/shack/mqtt_sub.nix>
     ## Collect radioactive data and put into graphite
     <stockholm/krebs/2configs/shack/radioactive.nix>
+    ## mqtt.shack
+    <stockholm/krebs/2configs/shack/mqtt.nix>
     ## Collect local statistics via collectd and send to collectd
     <stockholm/krebs/2configs/stats/wolf-client.nix>
-    ## write collectd statistics to wolf.shack
-    <stockholm/krebs/2configs/collectd-base.nix>
+
     { services.influxdb.enable = true; }
 
     <stockholm/krebs/2configs/shack/netbox.nix>
+    <stockholm/krebs/2configs/shack/prometheus/server.nix>
+    <stockholm/krebs/2configs/shack/prometheus/node.nix>
+    <stockholm/krebs/2configs/shack/prometheus/unifi.nix>
+    <stockholm/krebs/2configs/collectd-base.nix> # home-assistant
+    { services.influxdb.enable = true; }
+
   ];
   # use your own binary cache, fallback use cache.nixos.org (which is used by
   # apt-cacher-ng in first place)
@@ -76,10 +93,12 @@ in
   networking = {
     firewall.enable = false;
     firewall.allowedTCPPorts = [ 8088 8086 8083 ];
-    interfaces."${ext-if}".ipv4.addresses = [{
-      address = shack-ip;
-      prefixLength = 20;
-    }];
+    interfaces."${ext-if}".ipv4.addresses = [
+      {
+        address = shack-ip;
+        prefixLength = 20;
+      }
+    ];
 
     defaultGateway = "10.42.0.1";
     nameservers = [ "10.42.0.100" "10.42.0.200" ];
@@ -125,6 +144,7 @@ in
     config.krebs.users.raute.pubkey
     config.krebs.users.makefu-omo.pubkey
     "ssh-rsa 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 root@plattenschwein" # for backup
+    "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQC1Lx5MKtVjB/Ef6LpEiIAgVwY5xKQFdHuLQR+odQO4cAgxj1QaIXGN0moixY52DebVQhAtiCNiFZ83uJyOj8kmu30yuXwtSOQeqziA859qMJKZ4ZcYdKvbXwnf2Chm5Ck/0FvtpjTWHIZAogwP1wQto/lcqHOjrTAnZeJfQuHTswYUSnmUU5zdsEZ9HidDPUc2Gv0wkBNd+KMQyOZl0HkaxHWvn0h4KK4hYZisOpeTfXJxD87bo+Eg4LL2vvnHW6dF6Ygrbd/0XRMsRRI8OAReVBUoJn7IE1wwAl/FpblNmhaF9hlL7g7hR1ADvaWMMw0e8SSzW6Y+oIa8qFQL6wR1 gitlab-builder" # for being deployed by gitlab ci
   ];
   services.udev.extraRules = ''
     SUBSYSTEM=="net", ATTR{address}=="${external-mac}", NAME="${ext-if}"
diff --git a/krebs/2configs/collectd-base.nix b/krebs/2configs/collectd-base.nix
index 440f83fce..71a00be3a 100644
--- a/krebs/2configs/collectd-base.nix
+++ b/krebs/2configs/collectd-base.nix
@@ -9,7 +9,7 @@ let
       ModulePath "${collectd-connect-time}/lib/${python.libPrefix}/site-packages/"
       Import "collectd_connect_time"
       <Module collectd_connect_time>
-        target "localhost:22" "google.com" "google.de" "gum.r:22" "gum.krebsco.de" "heidi.shack:22" "10.42.0.1:22" "heise.de" "t-online.de"
+        target "localhost:22" "google.com" "google.de" "gum.r:22" "gum.krebsco.de" "10.42.0.1:22" "heise.de" "t-online.de"
         interval 10
       </Module>
     </Plugin>
@@ -18,7 +18,7 @@ let
     LoadPlugin write_graphite
     <Plugin "write_graphite">
       <Carbon>
-        Host "heidi.shack"
+        Host "wolf.r"
         Port "2003"
         Prefix "retiolum."
         EscapeCharacter "_"
diff --git a/krebs/2configs/default.nix b/krebs/2configs/default.nix
index fafcd72c3..8771c0e1d 100644
--- a/krebs/2configs/default.nix
+++ b/krebs/2configs/default.nix
@@ -34,6 +34,13 @@ with import <stockholm/lib>;
     rxvt_unicode.terminfo
   ];
 
+  i18n = {
+    consoleKeyMap = "us";
+    defaultLocale = lib.mkForce "C";
+  };
+
+
+
   programs.ssh.startAgent = false;
 
   services.openssh = {
diff --git a/krebs/2configs/shack/gitlab-runner.nix b/krebs/2configs/shack/gitlab-runner.nix
index 0fd06426a..5f2ca02d9 100644
--- a/krebs/2configs/shack/gitlab-runner.nix
+++ b/krebs/2configs/shack/gitlab-runner.nix
@@ -6,16 +6,17 @@ let
   };
 in
 {
-  systemd.services.gitlab-runner.path = [
-    "/run/wrappers" # /run/wrappers/bin/su
-    "/" # /bin/sh
-  ];
   imports = [
     "${runner-src}/gitlab-runner.nix"
   ];
-  services.gitlab-runner2.enable = true;
-  ## registrationConfigurationFile contains:
-  # CI_SERVER_URL=<CI server URL>
-  # REGISTRATION_TOKEN=<registration secret>
-  services.gitlab-runner2.registrationConfigFile = <secrets/shackspace-gitlab-ci>;
+  services.gitlab-runner2 = {
+    enable = true;
+    ## registrationConfigurationFile contains:
+    # CI_SERVER_URL=<CI server URL>
+    # REGISTRATION_TOKEN=<registration secret>
+    registrationConfigFile = <secrets/shackspace-gitlab-ci>;
+    #gracefulTermination = true;
+  };
+  systemd.services.gitlab-runner2.restartIfChanged = false;
+  systemd.services.docker.restartIfChanged = false;
 }
diff --git a/krebs/2configs/shack/mqtt.nix b/krebs/2configs/shack/mqtt.nix
new file mode 100644
index 000000000..8e5438db2
--- /dev/null
+++ b/krebs/2configs/shack/mqtt.nix
@@ -0,0 +1,14 @@
+{
+  networking.firewall.allowedTCPPorts = [ 1883 ];
+  networking.firewall.allowedUDPPorts = [ 1883 ];
+  services.mosquitto = {
+    enable = true;
+    host = "0.0.0.0";
+    users = {};
+    # TODO: secure that shit
+    aclExtraConf = ''
+      pattern readwrite #
+    '';
+    allowAnonymous = true;
+  };
+}
diff --git a/krebs/2configs/shack/muell_mail.nix b/krebs/2configs/shack/muell_mail.nix
new file mode 100644
index 000000000..39d49918d
--- /dev/null
+++ b/krebs/2configs/shack/muell_mail.nix
@@ -0,0 +1,33 @@
+{ config, lib, pkgs, ... }:
+
+let
+  pkg = pkgs.callPackage (
+    pkgs.fetchgit {
+      url = "https://git.shackspace.de/rz/muell_mail";
+      rev = "861ec25ab22797d8961efb32e72d79e113aa9f0f";
+      sha256 = "sha256:18cw95zbr7isv4cw80cbpd84n5z208fwh5390i6j10jkn398mjq2";
+    }) {};
+    home = "/var/lib/muell_mail";
+    cfg = toString <secrets/shack/muell_mail.js>;
+in {
+  users.users.muell_mail = {
+    inherit home;
+    createHome = true;
+  };
+  systemd.services.muell_mail = {
+    description = "muell_mail";
+    wantedBy = [ "multi-user.target" ];
+    environment.CONFIG = "${home}/muell_mail.js";
+    serviceConfig = {
+      User = "muell_mail";
+      ExecStartPre = pkgs.writeDash "muell_mail-pre" ''
+        install -D -omuell_mail -m700 ${cfg} ${home}/muell_mail.js
+      '';
+      WorkingDirectory = home;
+      PermissionsStartOnly = true;
+      ExecStart = "${pkg}/bin/muell_mail";
+      Restart = "always";
+      PrivateTmp = true;
+    };
+  };
+}
diff --git a/krebs/2configs/shack/muellshack.nix b/krebs/2configs/shack/muellshack.nix
new file mode 100644
index 000000000..1e6843bdf
--- /dev/null
+++ b/krebs/2configs/shack/muellshack.nix
@@ -0,0 +1,43 @@
+{ config, lib, pkgs, ... }:
+
+let
+  pkg = pkgs.callPackage (
+    pkgs.fetchgit {
+      url = "https://git.shackspace.de/rz/muellshack";
+      rev = "d8a5e2d4c0a22804838675ac42b468299dcd9a76";
+      sha256 = "0ff6q64dgdxmpszp94z100fdic175b1vvxn4crg8p0jcabzxsv0m";
+    }) {};
+    home = "/var/lib/muellshack";
+    port = "8081";
+in {
+  users.users.muellshack = {
+    inherit home;
+    createHome = true;
+  };
+  services.nginx.virtualHosts."muell.shack" = {
+    locations."/" = {
+      proxyPass = "http://localhost:${port}/muellshack/";
+    };
+  };
+  services.nginx.virtualHosts."openhab.shack" = {
+    locations."/muellshack/".proxyPass = "http://localhost:${port}/muellshack/";
+  };
+  systemd.services.muellshack = {
+    description = "muellshack";
+    wantedBy = [ "multi-user.target" ];
+    environment.PORT = port;
+    serviceConfig = {
+      User = "muellshack";
+      # do not override the current storage fil
+      ExecStartPre = pkgs.writeDash "call-muell-pre" ''
+        cp -vf ${pkg}/share/static_muelldata.json ${home}
+        cp -vn  ${pkg}/share/storage.json ${home}
+        chmod 700 ${home}/storage.json
+      '';
+      WorkingDirectory = home;
+      ExecStart = "${pkg}/bin/muellshack";
+      Restart = "always";
+      PrivateTmp = true;
+    };
+  };
+}
diff --git a/krebs/2configs/shack/node-light.nix b/krebs/2configs/shack/node-light.nix
new file mode 100644
index 000000000..63772f182
--- /dev/null
+++ b/krebs/2configs/shack/node-light.nix
@@ -0,0 +1,53 @@
+{ config, lib, pkgs, ... }:
+
+let
+  pkg = pkgs.callPackage (
+    pkgs.fetchgit {
+      url = "https://git.shackspace.de/rz/node-light.git";
+      rev = "a32c782650c4cc0adf51250fe249167d7246c59b";
+      sha256 = "0clvcp1m2ay0a9ibh7s21q7d9a6nam3497bysvc6mdygblks22qy";
+    }) {};
+    home = "/var/lib/node-light";
+    port = "8082";
+in {
+  # receive response from light.shack / standby.shack
+  networking.firewall.allowedUDPPorts = [ 2342 ];
+  users.users.node-light = {
+    inherit home;
+    createHome = true;
+  };
+  services.nginx.virtualHosts."lounge.light.shack" = {
+    locations."/" = {
+      proxyPass = "http://localhost:${port}/lounge/";
+    };
+  };
+  services.nginx.virtualHosts."power.light.shack" = {
+    locations."/" = {
+      proxyPass = "http://localhost:${port}/power/";
+    };
+  };
+
+  services.nginx.virtualHosts."openhab.shack" = {
+    serverAliases = [ "lightapi.shack" ];
+    locations."/power/".proxyPass = "http://localhost:${port}/power/";
+    locations."/lounge/".proxyPass = "http://localhost:${port}/lounge/";
+  };
+  systemd.services.node-light= {
+    description = "node-light";
+    wantedBy = [ "multi-user.target" ];
+    environment.PORT = port;
+    serviceConfig = {
+      User = "node-light";
+      # do not override the current storage file
+      ExecStartPre = pkgs.writeDash "call-light-pre" ''
+        cp -vn  ${pkg}/share/storage.json ${home}
+        chmod 700 ${home}/storage.json
+
+      '';
+      WorkingDirectory = home;
+      ExecStart = "${pkg}/bin/node-light";
+      Restart = "always";
+      PrivateTmp = true;
+    };
+  };
+}
diff --git a/krebs/2configs/shack/powerraw.nix b/krebs/2configs/shack/powerraw.nix
new file mode 100644
index 000000000..af3f129c1
--- /dev/null
+++ b/krebs/2configs/shack/powerraw.nix
@@ -0,0 +1,72 @@
+{ config, lib, pkgs, ... }:
+# Replacement for powerraw.shack pollin box
+# Requires usb-serial device on host
+# Requires mqtt available at mqtt.shack
+# Requires hostname powerraw.shack
+let
+  influx-url = "http://influx.shack:8086";
+  pkg = pkgs.python3.pkgs.callPackage (
+    pkgs.fetchgit {
+      url = "https://git.shackspace.de/rz/powermeter.git";
+      rev = "96609f0d632e0732afa768ddd7b3f8841ca37c1b";
+      sha256 = "sha256:0wfpm3ik5r081qv2crmpjwylgg2v8ximq347qh0fzq1rwv0dqbnn";
+    }) {};
+in {
+  # receive response from light.shack / standby.shack
+  networking.firewall.allowedUDPPorts = [ 11111 ];
+  users.users.powermeter.extraGroups = [ "dialout" ];
+
+  systemd.services.powermeter-serial2mqtt = {
+    description = "powerraw Serial -> mqtt";
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      User = "powermeter";
+      ExecStart = "${pkg}/bin/powermeter-serial2mqtt";
+      Restart = "always";
+      PrivateTmp = true;
+    };
+  };
+
+  systemd.services.powermeter-mqtt2socket = {
+    description = "powerraw mqtt -> raw socket 11111";
+    wantedBy = [ "multi-user.target" ];
+    serviceConfig = {
+      User = "powermeter";
+      ExecStart = "${pkg}/bin/powermeter-mqtt2socket";
+      Restart = "always";
+      PrivateTmp = true;
+    };
+  };
+
+  services.telegraf = {
+    enable = true;
+    extraConfig = {
+      agent.debug = false;
+      outputs = {
+        influxdb = [{
+          urls = [ influx-url ];
+          database = "telegraf";
+        }];
+      };
+    };
+  };
+
+  services.telegraf.extraConfig.inputs.mqtt_consumer = let
+    genTopic = name: topic: tags: {
+      servers = [ "tcp://mqtt.shack:1883" ];
+      qos = 0;
+      connection_timeout = "30s";
+      topics = [ topic ];
+      inherit tags;
+      persistent_session = false;
+      name_override = name;
+      data_format = "value";
+      data_type = "float";
+    };
+    sensor = "total";
+    types  = [ "Voltage" "Current" "Power" ];
+    phases = [ 1 2 3 ];
+  in
+    [ (genTopic "Power consumed" "/power/${sensor}/consumed"  { inherit sensor; }) ] ++
+    (lib.flatten (map (type: (map (phase: (genTopic "Power" "/power/${sensor}/L${toString phase}/${type}" { inherit sensor phase type; }) ) phases)) types));
+}
diff --git a/krebs/2configs/shack/prometheus/node.nix b/krebs/2configs/shack/prometheus/node.nix
new file mode 100644
index 000000000..5462464d5
--- /dev/null
+++ b/krebs/2configs/shack/prometheus/node.nix
@@ -0,0 +1,27 @@
+{ config, lib, pkgs, ... }:
+{
+  networking.firewall.allowedTCPPorts = [ 9100 ];
+
+  services.prometheus.exporters.node = {
+    enable = true;
+    enabledCollectors = [
+      "conntrack"
+      "diskstats"
+      "entropy"
+      "filefd"
+      "filesystem"
+      "loadavg"
+      "mdadm"
+      "meminfo"
+      "netdev"
+      "netstat"
+      "stat"
+      "time"
+      "vmstat"
+      "systemd"
+      "logind"
+      "interrupts"
+      "ksmd"
+    ];
+  };
+}
diff --git a/krebs/2c