Merge remote-tracking branch 'prism/master'

31 files changed, 650 insertions, 87 deletions

diff --git a/krebs/1systems/onebutton/config.nix b/krebs/1systems/onebutton/config.nix
new file mode 100644
index 000000000..c634d73ce
--- /dev/null
+++ b/krebs/1systems/onebutton/config.nix
@@ -0,0 +1,44 @@
+{ config, pkgs, lib, ... }:
+{
+  imports = [
+    <stockholm/krebs>
+    <stockholm/krebs/2configs>
+    { # minimal disk usage
+      environment.noXlibs = true;
+      nix.gc.automatic = true;
+      nix.gc.dates = "03:10";
+      programs.info.enable = false;
+      programs.man.enable = false;
+      services.journald.extraConfig = "SystemMaxUse=50M";
+      services.nixosManual.enable = false;
+    }
+  ];
+  krebs.build.host = config.krebs.hosts.onebutton;
+  # NixOS wants to enable GRUB by default
+  boot.loader.grub.enable = false;
+  # Enables the generation of /boot/extlinux/extlinux.conf
+  boot.loader.generic-extlinux-compatible.enable = true;
+
+  # !!! If your board is a Raspberry Pi 1, select this:
+  boot.kernelPackages = pkgs.linuxPackages_rpi;
+
+  nix.binaryCaches = [ "http://nixos-arm.dezgeg.me/channel" ];
+  nix.binaryCachePublicKeys = [ "nixos-arm.dezgeg.me-1:xBaUKS3n17BZPKeyxL4JfbTqECsT+ysbDJz29kLFRW0=%" ];
+
+  # !!! Needed for the virtual console to work on the RPi 3, as the default of 16M doesn't seem to be enough.
+  # boot.kernelParams = ["cma=32M"];
+
+  fileSystems = {
+    "/boot" = {
+      device = "/dev/disk/by-label/NIXOS_BOOT";
+      fsType = "vfat";
+    };
+    "/" = {
+      device = "/dev/disk/by-label/NIXOS_SD";
+      fsType = "ext4";
+    };
+  };
+
+  swapDevices = [ { device = "/swapfile"; size = 1024; } ];
+  services.openssh.enable = true;
+}
diff --git a/krebs/1systems/onebutton/source.nix b/krebs/1systems/onebutton/source.nix
new file mode 100644
index 000000000..8f25881c9
--- /dev/null
+++ b/krebs/1systems/onebutton/source.nix
@@ -0,0 +1,16 @@
+with import <stockholm/lib>;
+let
+  pkgs = import <nixpkgs> {};
+  nixpkgs = pkgs.fetchFromGitHub {
+    owner = "nixos";
+    repo = "nixpkgs-channels";
+    rev = "6c064e6b"; # only binary cache for unstable arm6
+    sha256 = "1rqzh475xn43phagrr30lb0fd292c1s8as53irihsnd5wcksnbyd";
+  };
+in import <stockholm/krebs/source.nix> {
+  name = "onebutton";
+  override.nixpkgs = mkForce {
+    file = toString nixpkgs;
+  };
+
+}
diff --git a/krebs/3modules/krebs/default.nix b/krebs/3modules/krebs/default.nix
index 1e626f0a0..a916c1873 100644
--- a/krebs/3modules/krebs/default.nix
+++ b/krebs/3modules/krebs/default.nix
@@ -91,6 +91,37 @@ in {
       ssh.privkey.path = <secrets/ssh.id_ed25519>;
       ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICxFkBln23wUxt4RhIHE3GvdKeBpJbjn++6maupHqUHp";
     };
+    onebutton = {
+      cores = 1;
+      owner = config.krebs.users.krebs;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.0.101";
+          ip6.addr = "42:0:0:0:0:0:0:101";
+          aliases = [
+            "onebutton.r"
+          ];
+          tinc.pubkey = ''
+            -----BEGIN PUBLIC KEY-----
+            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA11w6votRExwE0ZEiQmPa
+            9WGNsMfNAZEd14iHaHCZH7UPQEH+cH/T6isGPpaysindroMnqFe9mUf/cdYChb6N
+            aaFreApwGBQaJPUcdy4cfphrFpzmOClpOFuFbnV7ZvAk/wefBad3kUzsq/lK4HvB
+            7nPKeOB9kljphLrkzuLL/h2yOenMpO2ZdvwxyWN8HKmUNgvpBQjIr+Hka6cgy7Gp
+            pBVFHfSnad/eHeEvq91O/bHxrAxzH5N5DVagPDpkbiWYGl+0XVGP/h0CApr15Ael
+            +j2pJYc0ZlaXIp4KmNRqbd/fLe52JLrWbnFX4rRuY/DhoMqK8kjECEZ7gLiNSpCC
+            KlnlJ2LXX9c+d79ubzl5yLAJ3d6T4IJqkbAWJDuCrj821M9ZDk/qZwerayhrrvkF
+            tMYkQoGSe8MvSOU0rTEoH5iSRwDC7M0XzUe4l8/yZLFyD4Prz/dq6coqANfk/tlE
+            DnH3vDu9lmFvYrLcd6yDWzFfI3mWDJoUa6AKKoScCOaCkRfIM4Aew0i73+h1nJLO
+            59AAbZIkDYyWs53QniIG4EQteI9y/9j/628nPAVj68V5oIN76RDXfFHWDWq4DxmU
+            PpGVmoIKcKZmnl7RrDomRVpuGMdyQ+kCzIGH3XYe12v8Y5beHZBrd3OajgHZ/Tfp
+            jP873cT6h0hsGm9glgOYho8CAwEAAQ==
+            -----END PUBLIC KEY-----
+          '';
+        };
+      };
+      ssh.privkey.path = <secrets/ssh.id_ed25519>;
+      ssh.pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIAcZg+iLaPZ0SpLM+nANxIjZC/RIsansjyutK0+gPhIe ";
+    };
     puyak = {
       ci = true;
       owner = config.krebs.users.krebs;
diff --git a/krebs/5pkgs/simple/Reaktor/plugins.nix b/krebs/5pkgs/simple/Reaktor/plugins.nix
index bcfcbf76b..f3b771190 100644
--- a/krebs/5pkgs/simple/Reaktor/plugins.nix
+++ b/krebs/5pkgs/simple/Reaktor/plugins.nix
@@ -120,11 +120,24 @@ rec {
   url-title = (buildSimpleReaktorPlugin "url-title" {
     pattern = "^.*(?P<args>http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+).*$$";
     path = with pkgs; [ curl perl ];
-    script = pkgs.writeDash "lambda-pl" ''
-      if [ "$#" -gt 0 ]; then
-        curl -SsL --max-time 5 "$1" |
-          perl -l -0777 -ne 'print $1 if /<title.*?>\s*(.*?)\s*<\/title/si'
-      fi
+    script = pkgs.writePython3 [ "beautifulsoup4" "lxml" ] "url-title" ''
+      import sys
+      import urllib.request
+      from bs4 import BeautifulSoup
+
+      try:
+          soup = BeautifulSoup(urllib.request.urlopen(sys.argv[1]), "lxml")
+          title = soup.find('title').string
+
+          if title:
+              if len(title) > 512:
+                  print('message to long, skipped')
+              elif len(title.split('\n')) > 5:
+                  print('to many lines, skipped')
+              else:
+                  print(title)
+      except:  # noqa: E722
+          pass
     '';
   });
 
diff --git a/krebs/5pkgs/simple/generate-secrets/default.nix b/krebs/5pkgs/simple/generate-secrets/default.nix
new file mode 100644
index 000000000..a800ff543
--- /dev/null
+++ b/krebs/5pkgs/simple/generate-secrets/default.nix
@@ -0,0 +1,46 @@
+{ pkgs }:
+pkgs.writeDashBin "generate-secrets" ''
+  HOSTNAME="$1"
+  TMPDIR=$(${pkgs.coreutils}/bin/mktemp -d)
+  PASSWORD=$(${pkgs.pwgen}/bin/pwgen 25 1)
+  HASHED_PASSWORD=$(echo $PASSWORD | ${pkgs.hashPassword}/bin/hashPassword -s) > /dev/null
+
+  ${pkgs.openssh}/bin/ssh-keygen -t ed25519 -f $TMPDIR/ssh.id_ed25519 -P "" -C "" >/dev/null
+  ${pkgs.openssl}/bin/openssl genrsa -out $TMPDIR/retiolum.rsa_key.priv 4096 2>/dev/null > /dev/null
+  ${pkgs.openssl}/bin/openssl rsa -in $TMPDIR/retiolum.rsa_key.priv -pubout -out $TMPDIR/retiolum.rsa_key.pub 2>/dev/null > /dev/null
+  cat <<EOF > $TMPDIR/hashedPasswords.nix
+  {
+    root = "$HASHED_PASSWORD";
+  }
+  EOF
+
+  cd $TMPDIR
+  for x in *; do
+    ${pkgs.coreutils}/bin/cat $x | ${pkgs.brain}/bin/brain insert -m krebs-secrets/$HOSTNAME/$x > /dev/null
+  done
+  echo $PASSWORD | ${pkgs.brain}/bin/brain insert -m hosts/$HOSTNAME/root > /dev/null
+
+  cat <<EOF
+    $HOSTNAME = {
+      cores = 1;
+      owner = config.krebs.users.krebs;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.0.changeme";
+          ip6.addr = "42:0:0:0:0:0:0:changeme";
+          aliases = [
+            "$HOSTNAME.r"
+          ];
+          tinc.pubkey = ${"''"}
+  $(cat $TMPDIR/retiolum.rsa_key.pub)
+          ${"''"};
+        };
+      };
+      ssh.privkey.path = <secrets/ssh.id_ed25519>;
+      ssh.pubkey = "$(cat $TMPDIR/ssh.id_ed25519.pub)";
+    };
+  EOF
+
+  rm -rf $TMPDIR
+''
+
diff --git a/lass/1systems/mors/config.nix b/lass/1systems/mors/config.nix
index cd259d0fe..c59494e4d 100644
--- a/lass/1systems/mors/config.nix
+++ b/lass/1systems/mors/config.nix
@@ -141,6 +141,15 @@ with import <stockholm/lib>;
 
     dnsutils
     generate-secrets
+    (pkgs.writeDashBin "btc-coinbase" ''
+      ${pkgs.curl}/bin/curl -Ss 'https://api.coinbase.com/v2/prices/spot?currency=EUR' | ${pkgs.jq}/bin/jq '.data.amount'
+    '')
+    (pkgs.writeDashBin "btc-wex" ''
+      ${pkgs.curl}/bin/curl -Ss 'https://wex.nz/api/3/ticker/btc_eur' | ${pkgs.jq}/bin/jq '.btc_eur.avg'
+    '')
+    (pkgs.writeDashBin "btc-kraken" ''
+      ${pkgs.curl}/bin/curl -Ss  'https://api.kraken.com/0/public/Ticker?pair=BTCEUR' | ${pkgs.jq}/bin/jq '.result.XXBTZEUR.a[0]'
+    '')
   ];
 
   #TODO: fix this shit
@@ -177,4 +186,34 @@ with import <stockholm/lib>;
   programs.adb.enable = true;
   users.users.mainUser.extraGroups = [ "adbusers" "docker" ];
   virtualisation.docker.enable = true;
+
+  lass.restic = genAttrs [
+    "daedalus"
+    "icarus"
+    "littleT"
+    "prism"
+    "shodan"
+    "skynet"
+  ] (dest: {
+    dirs = [
+      "/home/lass/src"
+      "/home/lass/work"
+      "/home/lass/.gnupg"
+      "/home/lass/Maildir"
+      "/home/lass/stockholm"
+      "/home/lass/.password-store"
+      "/home/bitcoin"
+      "/home/bch"
+    ];
+    passwordFile = (toString <secrets>) + "/restic/${dest}";
+    repo = "sftp:backup@${dest}.r:/backups/mors";
+    #sshPrivateKey = config.krebs.build.host.ssh.privkey.path;
+    extraArguments = [
+      "sftp.command='ssh backup@${dest}.r -i ${config.krebs.build.host.ssh.privkey.path} -s sftp'"
+    ];
+    timerConfig = {
+      OnCalendar = "00:05";
+      RandomizedDelaySec = "5h";
+    };
+  });
 }
diff --git a/lass/1systems/prism/config.nix b/lass/1systems/prism/config.nix
index c0e4620cc..983604f8e 100644
--- a/lass/1systems/prism/config.nix
+++ b/lass/1systems/prism/config.nix
@@ -8,11 +8,15 @@ in {
   imports = [
     <stockholm/lass>
     {
-      networking.interfaces.et0.ip4 = [
+      networking.interfaces.et0.ipv4.addresses = [
         {
           address = ip;
           prefixLength = 27;
         }
+        {
+          address = "46.4.114.243";
+          prefixLength = 27;
+        }
       ];
       networking.defaultGateway = "46.4.114.225";
       networking.nameservers = [
@@ -110,29 +114,13 @@ in {
       };
 
       # TODO write function for proxy_pass (ssl/nonssl)
-      services.nginx.virtualHosts."hackerfleet.de" = {
-        serverAliases = [
-          "*.hackerfleet.de"
-        ];
-        locations."/".extraConfig = ''
-          proxy_pass http://192.168.122.92:80;
-        '';
-      };
-      services.nginx.virtualHosts."hackerfleet.de-s" = {
-        serverName = "hackerfleet.de";
-        listen = [
-          {
-            addr = "0.0.0.0";
-            port = 443;
-          }
-        ];
-        serverAliases = [
-          "*.hackerfleet.de"
-        ];
-        locations."/".extraConfig = ''
-          proxy_pass http://192.168.122.92:443;
-        '';
-      };
+
+      krebs.iptables.tables.filter.FORWARD.rules = [
+        { v6 = false; precedence = 1000; predicate = "-d 192.168.122.92"; target = "ACCEPT"; }
+      ];
+      krebs.iptables.tables.nat.PREROUTING.rules = [
+        { v6 = false; precedence = 1000; predicate = "-d 46.4.114.243"; target = "DNAT --to-destination 192.168.122.92"; }
+      ];
     }
     {
       users.users.tv = {
diff --git a/lass/2configs/monitoring/node-exporter.nix b/lass/2configs/monitoring/node-exporter.nix
new file mode 100644
index 000000000..8c27e90d4
--- /dev/null
+++ b/lass/2configs/monitoring/node-exporter.nix
@@ -0,0 +1,13 @@
+{ config, lib, pkgs, ... }:
+{
+  networking.firewall.allowedTCPPorts = [ 9100 ];
+
+  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..d56d7e552
--- /dev/null
+++ b/lass/2configs/monitoring/prometheus-server.nix
@@ -0,0 +1,179 @@
+{ pkgs, lib, config, ... }:
+{
+  #networking = {
+  #  firewall.allowedTCPPorts = [
+  #    3000  # grafana
+  #    9090  # prometheus
+  #    9093  # alertmanager
+  #  ];
+  #  useDHCP = true;
+  #};
+
+  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 = [
+                "localhost:9100"
+              ];
+              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" = "https://example.com/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 = ""}
+    };
+  };
+}
diff --git a/lass/2configs/reaktor-coders.nix b/lass/2configs/reaktor-coders.nix
index 5fa1611ae..5a39f7115 100644
--- a/lass/2configs/reaktor-coders.nix
+++ b/lass/2configs/reaktor-coders.nix
@@ -4,7 +4,7 @@ with import <stockholm/lib>;
 {
   krebs.Reaktor.coders = {
     nickname = "Reaktor|lass";
-    channels = [ "#coders" "#germany" ];
+    channels = [ "#coders" "#germany" "#panthermoderns" ];
     extraEnviron = {
       REAKTOR_HOST = "irc.hackint.org";
     };
@@ -87,6 +87,19 @@ with import <stockholm/lib>;
           exec /run/wrappers/bin/ping -q -c1 "$1" 2>&1 | tail -1
         '';
       })
+      (buildSimpleReaktorPlugin "google" {
+        pattern = "^!g (?P<args>.*)$$";
+        script = pkgs.writeDash "google" ''
+          exec ${pkgs.ddgr}/bin/ddgr -C -n1 --json "$@" | \
+            ${pkgs.jq}/bin/jq '@text "\(.[0].abstract) \(.[0].url)"'
+        '';
+      })
+      (buildSimpleReaktorPlugin "blockchain" {
+        pattern = ".*[Bb]lockchain.*$$";
+        script = pkgs.writeDash "blockchain" ''
+          exec echo 'DID SOMEBODY SAY BLOCKCHAIN? https://paste.krebsco.de/r99pMoQq/+inline'
+        '';
+      })
     ];
   };
 }
diff --git a/lass/2configs/syncthing.nix b/lass/2configs/syncthing.nix
index cef43d1e6..17debf822 100644
--- a/lass/2configs/syncthing.nix
+++ b/lass/2configs/syncthing.nix
@@ -3,7 +3,6 @@ with import <stockholm/lib>;
 {
   services.syncthing = {
     enable = true;
-    useInotify = true;
   };
   krebs.iptables.tables.filter.INPUT.rules = [
     { predicate = "-p tcp --dport 22000"; target = "ACCEPT";}
diff --git a/lass/2configs/websites/util.nix b/lass/2configs/websites/util.nix
index 62055d0fd..441b7af90 100644
--- a/lass/2configs/websites/util.nix
+++ b/lass/2configs/websites/util.nix
@@ -16,7 +16,7 @@ rec {
     in {
       services.nginx.virtualHosts.${domain} = {
         enableACME = true;
-        enableSSL = true;
+        onlySSL = true;
         extraConfig = ''
           listen 80;
           listen [::]:80;
@@ -34,7 +34,7 @@ rec {
     in {
       services.nginx.virtualHosts."${domain}" = {
         enableACME = true;
-        enableSSL = true;
+        onlySSL = true;
         serverAliases = domains;
         extraConfig = ''
           listen 80;
@@ -148,7 +148,7 @@ rec {
     in {
       services.nginx.virtualHosts."${domain}" = {
         enableACME = true;
-        enableSSL = true;
+        onlySSL = true;
         serverAliases = domains;
         extraConfig = ''
           listen 80;
diff --git a/lass/3modules/default.nix b/lass/3modules/default.nix
index 0c10e1ec2..5e7e6dff3 100644
--- a/lass/3modules/default.nix
+++ b/lass/3modules/default.nix
@@ -8,6 +8,7 @@ _:
     ./mysql-backup.nix
     ./news.nix
     ./pyload.nix
+    ./restic.nix
     ./screenlock.nix
     ./umts.nix
     ./usershadow.nix
diff --git a/lass/3modules/restic.nix b/lass/3modules/restic.nix
new file mode 100644
index 000000000..c720793b1
--- /dev/null
+++ b/lass/3modules/restic.nix
@@ -0,0 +1,119 @@
+{ config, lib, pkgs, ... }:
+
+with import <stockholm/lib>;
+
+{
+  options.lass.restic = mkOption {
+    type = types.attrsOf (types.submodule ({ config, ... }: {
+      options = {
+        name = mkOption {
+          type = types.str;
+          default = config._module.args.name;
+        };
+        passwordFile = mkOption {
+          type = types.str;
+          default = toString <secrets/restic-password>;
+          description = ''
+            read the repository password from a file.
+          '';
+          example = "/etc/nixos/restic-password";
+
+        };
+        repo = mkOption {
+          type = types.str;
+          default = "sftp:backup@prism.r:/backups/${config.name}";
+          description = ''
+            repository to backup to.
+          '';
+          example = "sftp:backup@192.168.1.100:/backups/${config.name}";
+        };
+        dirs = mkOption {
+          type = types.listOf types.str;
+          default = [];
+          description = ''
+            which directories to backup.
+          '';
+          example = [
+            "/var/lib/postgresql"
+            "/home/user/backup"
+          ];
+        };
+        timerConfig = mkOption {
+          type = types.attrsOf types.str;
+          default = {
+            OnCalendar = "daily";
+          };
+          description = ''
+            When to run the backup. See man systemd.timer for details.
+          '';
+          example = {
+            OnCalendar = "00:05";
+            RandomizedDelaySec = "5h";
+          };
+        };
+        user = mkOption {
+          type = types.str;
+          default = "root";
+          description = ''
+            As which user the backup should run.
+          '';
+          example = "postgresql";
+        };
+        extraArguments = mkOption {
+          type = types.listOf types.str;
+          default = [];
+          description = ''
+            Extra arguments to append to the restic command.
+          '';
+          example = [
+            "sftp.command='ssh backup@192.168.1.100 -i /home/user/.ssh/id_rsa -s sftp"
+          ];
+        };
+        initialize = mkOption {
+          type = types.bool;
+          default = false;
+          description = ''
+            Create the repository if it doesn't exist.
+          '';
+        };
+      };
+    }));
+    default = {};
+  };
+
+  config = {
+    systemd.services =
+      mapAttrs' (_: plan:
+        let
+          extraArguments = concatMapStringsSep " " (arg: "-o ${arg}") plan.extraArguments;
+          connectTo = elemAt (splitString ":" plan.repo) 1;
+          resticCmd = "${pkgs.restic}/bin/restic ${extraArguments}";
+        in nameValuePair "backup.${plan.name}" {
+          environment = {
+            RESTIC_PASSWORD_FILE = plan.passwordFile;
+            RESTIC_REPOSITORY = plan.repo;
+          };
+          path = with pkgs; [
+            openssh
+          ];
+          restartIfChanged = false;
+          serviceConfig = {
+            ExecStartPre = mkIf plan.initialize (pkgs.writeScript "rustic-${plan.name}-init" ''
+              #! ${pkgs.bash}/bin/bash
+              ${resticCmd} snapshots || ${resticCmd} init
+            '');
+            ExecStart = pkgs.writeDash "rustic-${plan.name}" (
+              "