Merge remote-tracking branch 'lass/master'

43 files changed, 586 insertions, 386 deletions

diff --git a/krebs/1systems/hotdog/config.nix b/krebs/1systems/hotdog/config.nix
index 6a51bf45f..cf07d3b4d 100644
--- a/krebs/1systems/hotdog/config.nix
+++ b/krebs/1systems/hotdog/config.nix
@@ -7,7 +7,7 @@
 
     <stockholm/krebs/2configs/buildbot-stockholm.nix>
     <stockholm/krebs/2configs/binary-cache/nixos.nix>
-    <stockholm/krebs/2configs/ergo.nix>
+    <stockholm/krebs/2configs/ircd.nix>
     <stockholm/krebs/2configs/reaktor2.nix>
     <stockholm/krebs/2configs/wiki.nix>
     <stockholm/krebs/2configs/acme.nix>
diff --git a/krebs/2configs/default.nix b/krebs/2configs/default.nix
index 9200d41fe..38d770316 100644
--- a/krebs/2configs/default.nix
+++ b/krebs/2configs/default.nix
@@ -4,6 +4,7 @@ with import <stockholm/lib>;
 {
   imports = [
     ./backup.nix
+    ./security-workarounds.nix
   ];
   krebs.announce-activation.enable = true;
   krebs.enable = true;
diff --git a/krebs/2configs/ergo.nix b/krebs/2configs/ergo.nix
deleted file mode 100644
index db0bc5748..000000000
--- a/krebs/2configs/ergo.nix
+++ /dev/null
@@ -1,13 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-  networking.firewall.allowedTCPPorts = [
-    6667
-  ];
-
-  krebs.ergo = {
-    enable = true;
-  };
-}
-
-
diff --git a/krebs/2configs/ircd.nix b/krebs/2configs/ircd.nix
index 904878731..c6c91e074 100644
--- a/krebs/2configs/ircd.nix
+++ b/krebs/2configs/ircd.nix
@@ -1,121 +1,44 @@
-{ config, pkgs, lib, ... }:
+{ config, pkgs, ... }:
 
 {
   networking.firewall.allowedTCPPorts = [
-    6667 6669
+    6667
   ];
 
-  systemd.services.solanum.serviceConfig.LimitNOFILE = lib.mkForce 16384;
-
-  services.solanum = {
+  krebs.ergo = {
     enable = true;
-    motd = ''
-      hello
-    '';
-    config = ''
-      loadmodule "extensions/m_omode";
-      serverinfo {
-        name = "${config.krebs.build.host.name}.irc.r";
-        sid = "1as";
-        description = "irc!";
-        network_name = "irc.r";
-
-        vhost = "0.0.0.0";
-        vhost6 = "::";
-
-        #ssl_private_key = "etc/ssl.key";
-        #ssl_cert = "etc/ssl.cert";
-        #ssl_dh_params = "etc/dh.pem";
-        #ssld_count = 1;
-
-        default_max_clients = 2048;
-        #nicklen = 30;
-      };
-
-      listen {
-        defer_accept = yes;
-
-        /* If you want to listen on a specific IP only, specify host.
-         * host definitions apply only to the following port line.
-         */
-        host = "0.0.0.0";
-        port = 6667;
-        #sslport = 6697;
-
-        /* Listen on IPv6 (if you used host= above). */
-        host = "::";
-        port = 6667;
-        #sslport = 6697;
-      };
-
-      class "users" {
-        ping_time = 2 minutes;
-        number_per_ident = 10;
-        number_per_ip = 4096;
-        number_per_ip_global = 4096;
-        cidr_ipv4_bitlen = 24;
-        cidr_ipv6_bitlen = 64;
-        number_per_cidr = 65535;
-        max_number = 65535;
-        sendq = 1000 megabyte;
-      };
-
-      privset "op" {
-        privs = oper:admin, oper:general;
-      };
-
-      operator "aids" {
-        user = "*@*";
-        password = "balls";
-        flags = ~encrypted;
-        snomask = "+s";
-        privset = "op";
-      };
-
-      exempt {
-        ip = "127.0.0.1";
-      };
-
-      exempt {
-        ip = "10.243.0.0/16";
-      };
-
-      auth {
-        user = "*@*";
-        class = "users";
-        flags = kline_exempt, exceed_limit, flood_exempt;
-      };
-
-      channel {
-        autochanmodes = "+t";
-        use_invex = yes;
-        use_except = yes;
-        use_forward = yes;
-        use_knock = yes;
-        knock_delay = 5 minutes;
-        knock_delay_channel = 1 minute;
-        max_chans_per_user = 150;
-        max_bans = 100;
-        max_bans_large = 500;
-        default_split_user_count = 0;
-        default_split_server_count = 0;
-        no_create_on_split = no;
-        no_join_on_split = no;
-        burst_topicwho = yes;
-        kick_on_split_riding = no;
-        only_ascii_channels = no;
-        resv_forcepart = yes;
-        channel_target_change = yes;
-        disable_local_channels = no;
-      };
-
-      general {
-        #maybe we want ident someday?
-        default_floodcount = 10000;
-        disable_auth = yes;
-        throttle_duration = 1;
-        throttle_count = 10000;
-      };
-    '';
+    config = {
+      server.secure-nets = [
+        "42::0/16"
+        "10.240.0.0/12"
+      ];
+      oper-classes.server-admin = {
+        title = "admin";
+        capabilities = [
+          "kill"         # disconnect user sessions
+          "ban"          # ban IPs, CIDRs, and NUH masks ("d-line" and "k-line")
+          "nofakelag"    # remove "fakelag" restrictions on rate of message sending
+          "relaymsg"     # use RELAYMSG in any channel (see the 'relaymsg' config block)
+          "vhosts"       # add and remove vhosts from users
+          "sajoin"       # join arbitrary channels, including private channels
+          "samode"       # modify arbitrary channel and user modes
+          "snomasks"     # subscribe to arbitrary server notice masks
+          "roleplay"     # use the (deprecated) roleplay commands in any channel
+          "rehash"       # rehash the server, i.e. reload the config at runtime
+          "accreg"       # modify arbitrary account registrations
+          "chanreg"      # modify arbitrary channel registrations
+          "history"      # modify or delete history messages
+          "defcon"       # use the DEFCON command (restrict server capabilities)
+          "massmessage"  # message all users on the server
+        ];
+      };
+      opers.aids = {
+        class = "server-admin";
+        hidden = false;
+        password = "$2a$04$0AtVycWQJ07ymrDdKyAm2un3UVSVIzpzL3wsWbWb3PF95d1CZMcMO";
+      };
+    };
   };
 }
+
+
diff --git a/krebs/2configs/mud.nix b/krebs/2configs/mud.nix
index d5e4c89c1..30f232b64 100644
--- a/krebs/2configs/mud.nix
+++ b/krebs/2configs/mud.nix
@@ -156,7 +156,8 @@ in {
     openssh.authorizedKeys.keys = with config.krebs.users; [
       lass.pubkey
       makefu.pubkey
-      kmein.pubkey
+      kmein-kabsa.pubkey
+      kmein-manakish.pubkey
       tv.pubkey
     ];
     packages = with pkgs; [
diff --git a/krebs/2configs/news.nix b/krebs/2configs/news.nix
index 84a39f95b..9ea4cbf8d 100644
--- a/krebs/2configs/news.nix
+++ b/krebs/2configs/news.nix
@@ -68,7 +68,13 @@
     wantedBy = [ "multi-user.target" ];
   };
 
-  systemd.services.brockman.bindsTo = [ "solanum.service" ];
+  krebs.ergo.openFilesLimit = 16384;
+  krebs.ergo.config = {
+    limits.nicklen = 100;
+    limits.identlen = 100;
+    history.enabled = false;
+  };
+  systemd.services.brockman.bindsTo = [ "ergo.service" ];
   systemd.services.brockman.serviceConfig.LimitNOFILE = 16384;
   systemd.services.brockman.environment.BROCKMAN_LOG_LEVEL = "DEBUG";
   krebs.brockman = {
diff --git a/krebs/2configs/reaktor2.nix b/krebs/2configs/reaktor2.nix
index df66fd798..305d31405 100644
--- a/krebs/2configs/reaktor2.nix
+++ b/krebs/2configs/reaktor2.nix
@@ -95,7 +95,7 @@ let
         }
         hooks.sed
         (generators.command_hook {
-          inherit (commands) random-emoji nixos-version;
+          inherit (commands) dance random-emoji nixos-version;
           tell = {
             filename =
               <stockholm/krebs/5pkgs/simple/Reaktor/scripts/tell-on_privmsg.sh>;
diff --git a/krebs/2configs/security-workarounds.nix b/krebs/2configs/security-workarounds.nix
new file mode 100644
index 000000000..27d1f8485
--- /dev/null
+++ b/krebs/2configs/security-workarounds.nix
@@ -0,0 +1,6 @@
+{ config, lib, pkgs, ... }:
+with import <stockholm/lib>;
+{
+  # https://github.com/berdav/CVE-2021-4034
+  security.wrappers.pkexec.source = lib.mkForce (pkgs.writeText "pkexec" "");
+}
diff --git a/krebs/3modules/backup.nix b/krebs/3modules/backup.nix
index c5cb1cae6..4a88582a2 100644
--- a/krebs/3modules/backup.nix
+++ b/krebs/3modules/backup.nix
@@ -157,7 +157,8 @@ let
     # of the deepest directory:
     # shellcheck disable=SC2174
     ${local.rsync} >&2 \
-        -aAXF --delete \
+        -aAX --delete \
+        --filter='dir-merge /.backup-filter' \
         --rsh=${shell.escape ssh} \
         --rsync-path=${shell.escape remote.rsync} \
         --link-dest=${shell.escape plan.dst.path}/current \
@@ -191,7 +192,8 @@ let
           echo >&2 "create snapshot: $ns/$name"
           mkdir -m 0700 -p "$dst_path/$ns"
           rsync >&2 \
-              -aAXF --delete \
+              -aAX --delete \
+              --filter='dir-merge /.backup-filter' \
               --link-dest="$dst_path/current" \
               "$dst_path/current/" \
               "$dst_path/$ns/.partial.$name"
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index f76d3c536..b58b52038 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -108,6 +108,7 @@ let
     { krebs = import ./makefu { inherit config; }; }
     { krebs = import ./external/palo.nix { inherit config; }; }
     { krebs = import ./external/mic92.nix { inherit config; }; }
+    { krebs = import ./external/kmein.nix { inherit config; }; }
     { krebs = import ./tv     { inherit config; }; }
     {
       krebs.dns.providers = {
diff --git a/krebs/3modules/ergo.nix b/krebs/3modules/ergo.nix
index 3153e4cfc..50c5ab628 100644
--- a/krebs/3modules/ergo.nix
+++ b/krebs/3modules/ergo.nix
@@ -2,6 +2,13 @@
   options = {
     krebs.ergo = {
       enable = lib.mkEnableOption "Ergo IRC daemon";
+      openFilesLimit = lib.mkOption {
+        type = lib.types.int;
+        default = 1024;
+        description = ''
+          Maximum number of open files. Limits the clients and server connections.
+        '';
+      };
       config = lib.mkOption {
         type = (pkgs.formats.json {}).type;
         description = ''
@@ -54,8 +61,8 @@
             multiclient = {
               enabled = true;
               allowed-by-default = true;
-              always-on = "opt-in";
-              auto-away = "opt-in";
+              always-on = "opt-out";
+              auto-away = "opt-out";
             };
           };
           channels = {
@@ -111,13 +118,15 @@
     systemd.services.ergo = {
       description = "Ergo IRC daemon";
       wantedBy = [ "multi-user.target" ];
-      reloadIfChanged = true;
+      # reload currently not working as expected
+      # reloadIfChanged = true;
       restartTriggers = [ configFile ];
       serviceConfig = {
         ExecStart = "${pkgs.ergo}/bin/ergo run --conf /etc/ergo.yaml";
         ExecReload = "${pkgs.util-linux}/bin/kill -HUP $MAINPID";
         DynamicUser = true;
         StateDirectory = "ergo";
+        LimitNOFILE = "${toString cfg.openFilesLimit}";
       };
     };
   });
diff --git a/krebs/3modules/external/default.nix b/krebs/3modules/external/default.nix
index 66914797d..1b51f0223 100644
--- a/krebs/3modules/external/default.nix
+++ b/krebs/3modules/external/default.nix
@@ -16,37 +16,7 @@ with import <stockholm/lib>;
   tinc-for = name: builtins.readFile (./tinc + "/${name}.pub");
 
 in {
-
   hosts = mapAttrs hostDefaults {
-    kabsa = {
-      owner = config.krebs.users.kmein;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.2.4";
-          aliases = [
-            "kabsa.r"
-            "kabsa.kmein.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN PUBLIC KEY-----
-            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtz/MY5OSxJqrEMv6Iwjk
-            g/V58MATljj+2bmOuOuPui/AUYHEZX759lHW4MgLjYdNbZEoVq8UgkxNk0KPGlSg
-            2lsJ7FneCU7jBSE2iLT1aHuNFFa56KzSThFUl6Nj6Vyg5ghSmDF2tikurtG2q+Ay
-            uxf5/yEhFUPc1ZxmvJDqVHMeW5RZkuKXH00C7yN+gdcPuuFEFq+OtHNkBVmaxu7L
-            a8Q6b/QbrwQJAR9FAcm5WSQIj2brv50qnD8pZrU4loVu8dseQIicWkRowC0bzjAo
-            IHZTbF/S+CK0u0/q395sWRQJISkD+WAZKz5qOGHc4djJHBR3PWgHWBnRdkYqlQYM
-            C9zA/n4I+Y2BEfTWtgkD2g0dDssNGP5dlgFScGmRclR9pJ/7dsIbIeo9C72c6q3q
-            sg0EIWggQ8xyWrUTXIMoDXt37htlTSnTgjGsuwRzjotAEMJmgynWRf3br3yYChrq
-            10Exq8Lej+iOuKbdAXlwjKEk0qwN7JWft3OzVc2DMtKf7rcZQkBoLfWKzaCTQ4xo
-            1Y7d4OlcjbgrkLwHltTaShyosm8kbttdeinyBG1xqQcK11pMO43GFj8om+uKrz57
-            lQUVipu6H3WIVGnvLmr0e9MQfThpC1em/7Aq2exn1JNUHhCdEho/mK2x/doiiI+0
-            QAD64zPmuo9wsHnSMR2oKs0CAwEAAQ==
-            -----END PUBLIC KEY-----
-          '';
-          tinc.pubkey_ed25519 = "KhOetVTVLtGxB22NmZhkTWC0Uhg8rXJv4ayZqchSgCN";
-        };
-      };
-    };
     helsinki = {
       owner = config.krebs.users.ajs124;
       nets = {
@@ -142,65 +112,6 @@ in {
         };
       };
     };
-    makanek = {
-      owner = config.krebs.users.kmein;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.2.84";
-          aliases = [
-            "makanek.r"
-            "makanek.kmein.r"
-            "grafana.kmein.r"
-            "names.kmein.r"
-            "graph.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAwvtxCG7Vua6+WoStGrkL+H/g4BABidL2eikDBtbxWN+oGv2Bjrwb
-            VzXB8lMTCsu6M2wb3YTXXzAkc5oI4gE1sSOiCKyhYnQRrndc91KewquxTPfKL19u
-            JiRqax/E49IvWKARPRPXUhPfU/NNw1oIxhbcFkjwJmqDvh9SWhl5VZVynCE28ov5
-            hjjhqNXZHOR8CQqPJeY8v38OAAwTWvJ6rhEQwp5dLBqmRAbvPXj7OOzCxKluDY2X
-            Dl4k6QAjI6NddJXsXHRYRNGiB0CP1UBC91NDtW2+HIjf1Q1Lip5agO4/SkkSUt39
-            de7uYKrNcfyDUBb9Suconw0HvW+Dv4Ce5um+aa1RUrWIQdqBCOECbsXYKp66vAnK
-            Hidf2uznFseWxiyxz1ow8AvvSseABej5GuHI/56lywnFlnHEZLREUF/4PT+BZ0vE
-            uPRkzqeSNybsYYFieK8aany/RmJaoIsduGutgAiKBvkCCHru895n02xuLhZVkM2G
-            zfVjA2le+Gxr21/sVPrHfxResLUh4RA8fkS7erWMRF4a3IOpIS4yrM+p4pZTlTxO
-            Ya8buh4RgyE/0hp4QNpa4K7fvntriK+k6zHs7BcZcG2aMWP3O9/4DgjzBR3eslQV
-            oou23ajP11wyfrmZK0/PQGTpsU472Jj+06KtMAaH0zo4vAR8s2kV1ukCAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-          tinc.pubkey_ed25519 = "GiAe9EH3ss+K71lRlkGaOcg/MrV/zxNW5tDF0koEGvC";
-        };
-      };
-    };
-    manakish = {
-      owner = config.krebs.users.kmein;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.2.85";
-          aliases = [
-            "manakish.r"
-            "manakish.kmein.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAtZcWwm1tTFoMcO0EOwNdSrZW9m2tSNWzwTGjlfuNFQKPnHiKdFFH
-            Hym72+WtaIZmffermGTfYdMoB/lWgOB0glqH9oSBFvrLVDgdQL2il589EXBd/1Qy
-            7Ye5EVy2/xEA7iZGg3j0i+q1ic48tt6ePd4+QR0LmLEa8+Gz5X0Tp9TTf7gdv+lB
-            dVA6p7LJixKcBsC5W0jY5oTGUP0fM844AtWbpflmlz0JZNWrkJhCksOnfhUzeIsF
-            1m9rCsyK+3jGMV6ZxhEbwaOt99Wlv0N0ouPePw+xLnnGTu0rJ/RKWceYnWnrHIyb
-            GgGIHnm9GbMd4mAfyp63emRYDMclSQSrddpDUL2GK8TCTttr6bZm4M/pFuXQGJsQ
-            EG0iaE8FM+nCrhmCRnX8dRWcNmHybd34UoVGCDJ6u+ksLIivqgWeY41CauqN0vQw
-            U4zqp6XMXRB6vlVcyLzdTASxVKaLJt+BuvHcyqz/YslJ97z4yoLE3d7s/9gZkM//
-            +FD970bsyvKpKRx72rNRCO9tQJNgPsaMiW5nuHUFw71XxX8o0w//5a0h5cdbiT64
-            I4ISySa4ynmHI1/v0a937/sFS0IvRI1Va0Efh2VxasNIqpDmM3hA8auPDj0Js/4c
-            qVnWMbvqqYlY9l//HCNxUXIhi0vcOr2PoCxBtcP5pHY8nNphQrPjRrcCAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-          tinc.pubkey_ed25519 = "CjSqXJMvJevjqX9W9sqDpLTJs9DXfC04YNAFpYqS2iN";
-        };
-      };
-    };
     qubasa = {
       owner = config.krebs.users.qubasa;
       nets = {
@@ -226,7 +137,6 @@ in {
         };
       };
     };
-
     keller = {
       owner = config.krebs.users.qubasa;
       nets = {
@@ -279,13 +189,6 @@ in {
       };
     };
 
-    rilke = {
-      owner = config.krebs.users.kmein;
-      nets.wiregrill = {
-        aliases = [ "rilke.w" ];
-        wireguard.pubkey = "09yVPHL/ucvqc6V5n7vFQ2Oi1LBMdwQZDL+7jBwy+iQ=";
-      };
-    };
     rtjure = {
       owner = config.krebs.users.rtjure;
       nets = {
@@ -312,37 +215,6 @@ in {
         };
       };
     };
-    zaatar = {
-      owner = config.krebs.users.kmein;
-      nets = {
-        retiolum = {
-          ip4.addr = "10.243.2.34";
-          aliases = [
-            "zaatar.r"
-            "zaatar.kmein.r"
-            "grocy.kmein.r"
-            "bvg.kmein.r"
-            "moodle.kmein.r"
-          ];
-          tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAyEeesa4mDNAT2QT/PxfmildhqawinWTcUiF3V2wsfy3eXJCFySKM
-            pRKrLnOpkd2RoLWA88o0/hAfTdel/fXRjAx8TtKlh1n+UoRhYOGqLJKUZDVGImjJ
-            xTPGCC+g4b2cNCYU3RVdttSu8+zlfO6ktkySULKbVkJN3ocQmSCmWs2tP6hYvk2i
-            5OB3Uxw+OwhtVO76dlby6Idmc8o++ZVm3snbYsgiR7RQf9vHZHR8lKr5fZ/ycq2Q
-            T+agY/cFLJ+jhfUi8LFtKKcqGLyKKrDywADQWTcIG+cjV33k6ftW678jvsEft6e6
-            2RgspZX5XciTbMPIPGMcH5NZPXi6youcUcqcqDtok7Y1Jj3N5dSmJno5ojyKolZp
-            PRt4bPx9WuerjzwL5gG9E6n6l24neX6Mq7RDyJfBYtpUvZblezXWUuoReGNczAvj
-            zZrAKXKnuCEgQ/du7pT8V6qHG5NjovIMm0VDxOJV5jBL4NUox3PGbW5g0vS/nxHc
-            xKWPq+4zoyA6MsL9sGCqIlSWEqNnSERX19GbJZNYjm1J+aGZ/fZ+MaDJGuCzlxn4
-            yjLBuuXSkIrPxxtIV+Yh8Wy5qDNRN7XS1wNxUcmjQn0+7Ou/4W+cTWJ/+yZyC1DK
-            uYEZh8YBMJo0E4bR4s04SFA6uLIvLigPELxzb0jwZSKXRnQhay6zzZ0CAwEAAQ==
-            -----END RSA PUBLIC KEY-----
-          '';
-          tinc.pubkey_ed25519 = "GYg9UMw0rFWFS0Yr8HFe81HcGjQw0xbu9wqDWtQPDLH";
-        };
-      };
-    };
     sokrateslaptop = {
       owner = config.krebs.users.sokratess;
       nets = {
@@ -691,6 +563,31 @@ in {
         };
       };
     };
+    papawhakaaro = {
+      owner = config.krebs.users.feliks;
+      nets = {
+        retiolum = {
+          ip4.addr = "10.243.10.243";
+          aliases = [ "papawhakaaro.r" ];
+          tinc.pubkey = ''
+            -----BEGIN RSA PUBLIC KEY-----
+            MIICCgKCAgEA4bd0lVUVlzFmM8TuH77C5VctcK4lkw02LbMVQDJ5U+Ww075nNahw
+            oRHqPgJRwfGW0Tgu/1s5czZ2tAFU3lXoOSBYldAspM3KRZ4DKQsFrL9B0oWarGsK
+            sUgsuOJprlX4mkfj/eBNINqTqf2kVIH+p43VENQ9ioKmc+qJKm4xfRONRLp871GV
+            5jmIvRvQ6JP0RtNd2KpNLaeplzx8M61D9PBOAZkNYAUTpBs4LZBNJj4eFnXBugrz
+            GkBjmm3Rk7olz0uOZzbeTc6Slv2tgtN5FrQifdy4XIlsKcBTzMkYHEZstmldJgd9
+            pGvfmem6uPcXrF+eDJzqUn0ArH7eOIS4F0+DzugJz4qX+ytvE4ag7r2Vx0Pa9TCY
+            hpn0lqwW+ly1clM0SKt59v1nQ4oRW4UIbAZaIgp4UJbb3IGSwbq7NuadvHpNICHi
+            4pqQD+1sSEbGLAZ0bFjLIYFg9zzNjLeAxXpn49WHOEyRlq3h+SUQcG2EuVMI28DX
+            lILKSoOJsuQupURPubaxkiNEa5neYk9hZ8CWgwSG/VlyRLuNsVDVn2dBma43Mr10
+            LHMkX2/a9t7ghokugvV2XMP9Es9A9TGFShM9UtFAlovdad+SQ8FBPNheDwIhjCJe
+            l5NIrMrmQIveq7QJ1szxYhqfl1ifU0c+YxeMkg3tvEuQV/tk/oki/aECAwEAAQ==
+            -----END RSA PUBLIC KEY-----
+          '';
+          tinc.pubkey_ed25519 = "5G49yQPjkkoGZxM6CeDy87y6tB/abtelUAk55wJ4GpP";
+        };
+      };
+    };
     hydrogen = {
       owner = config.krebs.users.sandro;
       nets = rec {
@@ -740,10 +637,6 @@ in {
     jonge = {
       mail = "jacek.galowicz@gmail.com";
     };
-    kmein = {
-      mail = "kmein@posteo.de";
-      pubkey = ssh-for "kmein";
-    };
     mic92 = {
       mail = "joerg@thalheim.io";
       pubkey = ssh-for "mic92";
@@ -799,5 +692,8 @@ in {
     pie_ = {};
     domsen = {
     };
+    feliks = {
+      mail = "feliks@flipdot.org";
+    };
   };
 }
diff --git a/krebs/3modules/external/kmein.nix b/krebs/3modules/external/kmein.nix
new file mode 100644
index 000000000..9ef079090
--- /dev/null
+++ b/krebs/3modules/external/kmein.nix
@@ -0,0 +1,146 @@
+with import <stockholm/lib>;
+{ config, ... }:
+let
+  maybeEmpty = attrset: key: if (attrset?key) then attrset.${key} else [];
+  hostDefaults = hostName: host: flip recursiveUpdate host ({
+    ci = false;
+    external = true;
+    monitoring = false;
+    owner = config.krebs.users.kmein;
+  } // optionalAttrs (host.nets?retiolum) {
+    nets.retiolum = {
+      ip6.addr = (krebs.genipv6 "retiolum" "external" { inherit hostName; }).address;
+    };
+  } // optionalAttrs (host.nets?wiregrill) {
+    nets.wiregrill = {
+      ip6.addr = (krebs.genipv6 "wiregrill" "external" { inherit hostName; }).address;
+    };
+  });
+  ssh-for = name: builtins.readFile (./ssh + "/${name}.pub");
+in
+{
+  users = rec {
+    kmein = kmein-kabsa;
+    kmein-kabsa = {
+      mail = "kmein@posteo.de";
+      pubkey = ssh-for "kmein.kabsa";
+    };
+    kmein-manakish = {
+      inherit (kmein-kabsa) mail;
+      pubkey = ssh-for "kmein.manakish";
+    };
+  };
+  hosts = mapAttrs hostDefaults {
+    kabsa = {
+      nets.retiolum = {
+        aliases = [ "kabsa.r" "kabsa.kmein.r" ];
+        ip4.addr = "10.243.2.4";
+        tinc.pubkey = ''
+          -----BEGIN PUBLIC KEY-----
+          MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAtz/MY5OSxJqrEMv6Iwjk
+          g/V58MATljj+2bmOuOuPui/AUYHEZX759lHW4MgLjYdNbZEoVq8UgkxNk0KPGlSg
+          2lsJ7FneCU7jBSE2iLT1aHuNFFa56KzSThFUl6Nj6Vyg5ghSmDF2tikurtG2q+Ay
+          uxf5/yEhFUPc1ZxmvJDqVHMeW5RZkuKXH00C7yN+gdcPuuFEFq+OtHNkBVmaxu7L
+          a8Q6b/QbrwQJAR9FAcm5WSQIj2brv50qnD8pZrU4loVu8dseQIicWkRowC0bzjAo
+          IHZTbF/S+CK0u0/q395sWRQJISkD+WAZKz5qOGHc4djJHBR3PWgHWBnRdkYqlQYM
+          C9zA/n4I+Y2BEfTWtgkD2g0dDssNGP5dlgFScGmRclR9pJ/7dsIbIeo9C72c6q3q
+          sg0EIWggQ8xyWrUTXIMoDXt37htlTSnTgjGsuwRzjotAEMJmgynWRf3br3yYChrq
+          10Exq8Lej+iOuKbdAXlwjKEk0qwN7JWft3OzVc2DMtKf7rcZQkBoLfWKzaCTQ4xo
+          1Y7d4OlcjbgrkLwHltTaShyosm8kbttdeinyBG1xqQcK11pMO43GFj8om+uKrz57
+          lQUVipu6H3WIVGnvLmr0e9MQfThpC1em/7Aq2exn1JNUHhCdEho/mK2x/doiiI+0
+          QAD64zPmuo9wsHnSMR2oKs0CAwEAAQ==
+          -----END PUBLIC KEY-----
+        '';
+        tinc.pubkey_ed25519 = "KhOetVTVLtGxB22NmZhkTWC0Uhg8rXJv4ayZqchSgCN";
+      };
+    };
+    makanek = {
+      nets.retiolum = {
+        aliases = [
+          "makanek.r"
+          "makanek.kmein.r"
+          "grafana.kmein.r"
+          "names.kmein.r"
+          "graph.r"
+          "rrm.r"
+        ];
+        ip4.addr = "10.243.2.84";
+        tinc.pubkey = ''
+          -----BEGIN RSA PUBLIC KEY-----
+          MIICCgKCAgEAwvtxCG7Vua6+WoStGrkL+H/g4BABidL2eikDBtbxWN+oGv2Bjrwb
+          VzXB8lMTCsu6M2wb3YTXXzAkc5oI4gE1sSOiCKyhYnQRrndc91KewquxTPfKL19u
+          JiRqax/E49IvWKARPRPXUhPfU/NNw1oIxhbcFkjwJmqDvh9SWhl5VZVynCE28ov5
+          hjjhqNXZHOR8CQqPJeY8v38OAAwTWvJ6rhEQwp5dLBqmRAbvPXj7OOzCxKluDY2X
+          Dl4k6QAjI6NddJXsXHRYRNGiB0CP1UBC91NDtW2+HIjf1Q1Lip5agO4/SkkSUt39
+          de7uYKrNcfyDUBb9Suconw0HvW+Dv4Ce5um+aa1RUrWIQdqBCOECbsXYKp66vAnK
+          Hidf2uznFseWxiyxz1ow8AvvSseABej5GuHI/56lywnFlnHEZLREUF/4PT+BZ0vE
+          uPRkzqeSNybsYYFieK8aany/RmJaoIsduGutgAiKBvkCCHru895n02xuLhZVkM2G
+          zfVjA2le+Gxr21/sVPrHfxResLUh4RA8fkS7erWMRF4a3IOpIS4yrM+p4pZTlTxO
+          Ya8buh4RgyE/0hp4QNpa4K7fvntriK+k6zHs7BcZcG2aMWP3O9/4DgjzBR3eslQV
+          oou23ajP11wyfrmZK0/PQGTpsU472Jj+06KtMAaH0zo4vAR8s2kV1ukCAwEAAQ==
+          -----END RSA PUBLIC KEY-----
+        '';
+        tinc.pubkey_ed25519 = "GiAe9EH3ss+K71lRlkGaOcg/MrV/zxNW5tDF0koEGvC";
+      };
+    };
+    manakish = {
+      nets.retiolum = {
+        aliases = [
+          "manakish.r"
+          "manakish.kmein.r"
+        ];
+        ip4.addr = "10.243.2.85";
+        tinc.pubkey = ''
+          -----BEGIN RSA PUBLIC KEY-----
+          MIICCgKCAgEAtZcWwm1tTFoMcO0EOwNdSrZW9m2tSNWzwTGjlfuNFQKPnHiKdFFH
+          Hym72+WtaIZmffermGTfYdMoB/lW