Merge remote-tracking branch 'lass/master'

36 files changed, 550 insertions, 144 deletions

diff --git a/krebs/0tests/data/secrets/gollum.id_ed25519 b/krebs/0tests/data/secrets/gollum.id_ed25519
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/krebs/0tests/data/secrets/gollum.id_ed25519
diff --git a/krebs/0tests/data/secrets/shack/telegram_bot.env b/krebs/0tests/data/secrets/shack/telegram_bot.env
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/krebs/0tests/data/secrets/shack/telegram_bot.env
diff --git a/krebs/1systems/puyak/config.nix b/krebs/1systems/puyak/config.nix
index 8b30dfef9..08a3392bd 100644
--- a/krebs/1systems/puyak/config.nix
+++ b/krebs/1systems/puyak/config.nix
@@ -85,7 +85,7 @@
   '';
 
   users.users.joerg = {
-    openssh.authorizedKeys.keys = [ config.krebs.users.Mic92.pubkey ];
+    openssh.authorizedKeys.keys = [ config.krebs.users.mic92.pubkey ];
     isNormalUser = true;
     shell = "/run/current-system/sw/bin/zsh";
   };
diff --git a/krebs/2configs/go.nix b/krebs/2configs/go.nix
index f4c1290c2..c39b08a8e 100644
--- a/krebs/2configs/go.nix
+++ b/krebs/2configs/go.nix
@@ -13,7 +13,7 @@ with import <stockholm/lib>;
     enable = true;
     virtualHosts.go = {
       locations."/".extraConfig = ''
-        proxy_set_header Host go;
+        proxy_set_header Host go.r;
         proxy_pass http://localhost:1337;
       '';
       serverAliases = [
diff --git a/krebs/2configs/reaktor2.nix b/krebs/2configs/reaktor2.nix
index 72eff176b..061dc9ab9 100644
--- a/krebs/2configs/reaktor2.nix
+++ b/krebs/2configs/reaktor2.nix
@@ -76,7 +76,7 @@ let
           };
         }
         {
-          pattern = ''^([\w-]*):?\s+([+-][1-9][0-9]*)\s+(\S+)$'';
+          pattern = ''^([\H-]*):?\s+([+-][1-9][0-9]*)\s+(\S+)$'';
           activate = "match";
           arguments = [1 2 3];
           command = {
diff --git a/krebs/2configs/wiki.nix b/krebs/2configs/wiki.nix
index 2350e711e..e4f05a6e6 100644
--- a/krebs/2configs/wiki.nix
+++ b/krebs/2configs/wiki.nix
@@ -1,9 +1,41 @@
-{ config, ... }:
+{ config, pkgs, ... }:
+with import <stockholm/lib>;
+let
 
+  setupGit = ''
+    export PATH=${makeBinPath [ pkgs.git ]}
+    export GIT_SSH_COMMAND='${pkgs.openssh}/bin/ssh -i ${config.krebs.gollum.stateDir}/.ssh/id_ed25519'
+    repo='git@localhost:wiki'
+    cd ${config.krebs.gollum.stateDir}
+    if ! url=$(git config remote.origin.url); then
+      git remote add origin "$repo"
+    elif test "$url" != "$repo"; then
+      git remote set-url origin "$repo"
+    fi
+  '';
+
+  pushGollum = pkgs.writeDash "push_gollum" ''
+    ${setupGit}
+    git fetch origin
+    git merge --ff-only origin/master
+  '';
+
+  pushCgit = pkgs.writeDash "push_cgit" ''
+    ${setupGit}
+    git push origin master
+  '';
+
+in
 {
-  services.gollum = {
+  krebs.gollum = {
     enable = true;
+    extraConfig = ''
+      Gollum::Hook.register(:post_commit, :hook_id) do |committer, sha1|
+        system('${pushCgit}')
+      end
+    '';
   };
+
   networking.firewall.allowedTCPPorts = [ 80 ];
   services.nginx = {
     enable = true;
@@ -16,4 +48,51 @@
       '';
     };
   };
+
+  krebs.git = {
+    enable = true;
+    cgit.settings = {
+      root-title = "krebs repos";
+    };
+    rules = with git; [
+      {
+        user = [
+          {
+            name = "gollum";
+            pubkey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMXbjDnQWg8EECsNRZZWezocMIiuENhCSQFcFUXcsOQ6";
+          }
+        ] ++ (attrValues config.krebs.users);
+        repo = [ config.krebs.git.repos.wiki ];
+        perm = push ''refs/heads/master'' [ create merge ];
+      }
+    ];
+    repos.wiki = {
+      public = true;
+      name = "wiki";
+      hooks = {
+        post-receive = ''
+          ${pkgs.git-hooks.irc-announce {
+            channel = "#xxx";
+            refs = [
+              "refs/heads/master"
+            ];
+            nick = config.networking.hostName;
+            server = "irc.r";
+            verbose = true;
+          }}
+          /run/wrappers/bin/sudo -S -u gollum ${pushGollum}
+        '';
+      };
+    };
+  };
+
+  krebs.secret.files.gollum = {
+    path = "${config.krebs.gollum.stateDir}/.ssh/id_ed25519";
+    owner = { name = "gollum"; };
+    source-path = "${<secrets/gollum.id_ed25519>}";
+  };
+
+  security.sudo.extraConfig = ''
+    git ALL=(gollum) NOPASSWD: ${pushGollum}
+  '';
 }
diff --git a/krebs/3modules/default.nix b/krebs/3modules/default.nix
index f3180722d..bd6bab376 100644
--- a/krebs/3modules/default.nix
+++ b/krebs/3modules/default.nix
@@ -27,6 +27,7 @@ let
       ./github-known-hosts.nix
       ./git.nix
       ./go.nix
+      ./gollum.nix
       ./hidden-ssh.nix
       ./hosts.nix
       ./htgen.nix
@@ -108,7 +109,6 @@ let
     {
       krebs.dns.providers = {
         "krebsco.de" = "zones";
-        gg23 = "hosts";
         shack = "hosts";
         i = "hosts";
         r = "hosts";
@@ -152,9 +152,11 @@ let
                     let
                       longs = net.aliases;
                       shorts =
-                        map (removeSuffix ".${cfg.dns.search-domain}")
-                            (filter (hasSuffix ".${cfg.dns.search-domain}")
-                                    longs);
+                        optionals
+                          (cfg.dns.search-domain != null)
+                          (map (removeSuffix ".${cfg.dns.search-domain}")
+                               (filter (hasSuffix ".${cfg.dns.search-domain}")
+                                       longs));
                       add-port = a:
                         if net.ssh.port != 22
                           then "[${a}]:${toString net.ssh.port}"
@@ -177,7 +179,8 @@ let
           (concatMap (host: attrValues host.nets)
             (mapAttrsToList
               (_: host: recursiveUpdate host
-                (optionalAttrs (hasAttr cfg.dns.search-domain host.nets) {
+                (optionalAttrs (cfg.dns.search-domain != null &&
+                                hasAttr cfg.dns.search-domain host.nets) {
                   nets."" = host.nets.${cfg.dns.search-domain} // {
                     aliases = [host.name];
                     addrs = [];
diff --git a/krebs/3modules/dns.nix b/krebs/3modules/dns.nix
index b7e2a2cbb..8acc4ccd8 100644
--- a/krebs/3modules/dns.nix
+++ b/krebs/3modules/dns.nix
@@ -6,7 +6,7 @@ with import <stockholm/lib>;
     };
 
     krebs.dns.search-domain = mkOption {
-      type = types.hostname;
+      type = types.nullOr types.hostname;
     };
   };
 }
diff --git a/krebs/3modules/external/default.nix b/krebs/3modules/external/default.nix
index 082dfd80f..e1667cb68 100644
--- a/krebs/3modules/external/default.nix
+++ b/krebs/3modules/external/default.nix
@@ -465,9 +465,9 @@ in {
       mail = "kieran.meinhardt@gmail.com";
       pubkey = ssh-for "kmein";
     };
-    Mic92 = {
+    mic92 = {
       mail = "joerg@thalheim.io";
-      pubkey = ssh-for "Mic92";
+      pubkey = ssh-for "mic92";
     };
     qubasa = {
       mail = "luis.nixos@gmail.com";
diff --git a/krebs/3modules/external/mic92.nix b/krebs/3modules/external/mic92.nix
index b8aaf9900..5a766664f 100644
--- a/krebs/3modules/external/mic92.nix
+++ b/krebs/3modules/external/mic92.nix
@@ -11,7 +11,7 @@ with import <stockholm/lib>;
 in {
   hosts = mapAttrs hostDefaults {
     amy = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           ip4.addr = "129.215.165.57";
@@ -44,7 +44,7 @@ in {
       };
     };
     clara = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           ip4.addr = "129.215.165.58";
@@ -77,7 +77,7 @@ in {
       };
     };
     dimitrios = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.183";
@@ -98,7 +98,7 @@ in {
       };
     };
     donna = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           ip4.addr = "129.215.165.54";
@@ -132,7 +132,7 @@ in {
       };
     };
     dpdkm = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         retiolum = {
           ip4.addr = "10.243.29.173";
@@ -156,7 +156,7 @@ in {
       };
     };
     herbert = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         retiolum = {
           addrs = [
@@ -179,7 +179,7 @@ in {
       };
     };
     inspector = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           ip4.addr = "141.76.44.154";
@@ -208,7 +208,7 @@ in {
       };
     };
     eddie = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           # eddie.thalheim.io
@@ -242,7 +242,7 @@ in {
       };
     };
     eve = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           # eve.thalheim.io
@@ -273,13 +273,17 @@ in {
             Pxol8FwH5+Q72bLtvg5Zva8D0Vx2U1jYSHEkRDDzaS5Z6Fus+zeZVMsCAwEAAQ==
             -----END RSA PUBLIC KEY-----
           '';
-          # ohorn lan
-          tinc.subnets = [ "fd42:4492:6a6d:500:8526:2adf:7451:8bbb" ];
+          tinc.subnets = [
+            # ohorn lan
+            "fd42:4492:6a6d:500:8526:2adf:7451:8bbb"
+            # docker network
+            "42:0000:002b:1605:3::/80"
+          ];
         };
       };
     };
     martha = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           ip4.addr = "129.215.165.53";
@@ -313,7 +317,7 @@ in {
       };
     };
     matchbox = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.176";
@@ -339,31 +343,32 @@ in {
       };
     };
     rock = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.171";
           aliases = [ "rock.r" ];
           tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIICCgKCAgEAsMJbXDhkaLZcEzCIe8G+rHyLulWIqrUAmDT4Vbtv4r0QhPBsqwjM
-            DuvRtX5SNHdjfZWnUZoOlmXrmIo07exPFQvyrnppm6DNx+IZ5mNMNVIFUoojRhF7
-            HS2jubcjTEib56XEYWKly0olrVMbsJk5THJqRQyOQuTPCFToxXVRcT5t/UK6Dzgh
-            mp+suJ7IcmmO80IwfZrQrQslkQ6TdOy1Vs908GacSQJyRxdRxLraU/98iMhFbAQf
-            Ap+qVSUU88iCi+tcoSYzKhqU2N0AhRGcsE073B3Px8CAgPK/juwTrFElKEc17X9M
-            Rh41DvUjrtG4ERPmbwKPtsLagmnZUlU8A5YC8wtV08RI5QBsbbOsKInareV1aLeD
-            91ZVCBPFTz8IM6Mc6H435eMCMC2ynFCDyRGdcue3tBQoaTGe1dbduIZkPGn+7cg4
-            fef1db6SQD4HCwDLv8CTFLACR/jmAapwZEgvJ3u3bpgMGzt+QNvL1cxUr3TBUWRv
-            3f0R+Dj8DCUWTJUE7K5LO7bL4p9Ht0yIsVH+/DucyoMQqRwCwWSr7+H2MAsWviav
-            ZRRfH0RqZPEzCxyLDBtkVrx+GRAUZxy1xlqmN16O/sRHiqq3bv8Jk3dwuRZlFu6q
-            cOFu4g9XsamHkmCuVkvTGjnC2h21MjUUr3PGHzOMtiM/18LcfX730f8CAwEAAQ==
-            -----END RSA PUBLIC KEY-----
+            -----BEGIN PUBLIC KEY-----
+            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEA0uhNk3XXVxQcIVhD1Ime
+            9PY3QBIcXvwDlOrd3oUwyWTvZpUeO7yzIXdouAe4s0ohPIVq7Cmruj4ZrOGUCKyB
+            oJpOziYSbL/IiCpXyOzWMLEwu0AoeFfbxig+5oZfwQ9epM2j902CgsUipJBLIg48
+            BC9oOD+/iYEwsFPqQ/S0kETyQK5Ad+qv0lbU6/Kmify8Qplvpv/8DRdjsdLki1fU
+            a6MAEw12OtHe6IWtlitPjFMBykTP6kkSp/eg0G2KZFVuEulwHGf9QT/eT4fZTMCC
+            2V5Vp4rIr/hawmj+h4NIxniBSQcPAAIGNwZVC4uYYV1nd4iaI/T04rDJwte5WKHf
+            EVxtlYt9RU1I/XdNRSj9gYyneVcVlDVos8Z93oUv1hIGZYFtNmGVna6lggOBPf/t
+            BZ1MT6FKA4QX9JI8bQoNs18s8ffzyb07psNbH6YhpCygnhf9C7NR/CeI8BtpzJza
+            1Qk731Z6bk6xRFKMuY2tRKlNCqPHULj44oTHB3Ki2B/bMlkguqSChfFzKIRASYO1
+            SASSgddexjkjKLslxcLWhIqYrZhuhYlFyoeoMI3qQsey/4X5PUmQDxxhTT80+qvE
+            thBNPg46joyLTq9E9ddf7t/0C6oD2DXY88N9bkztuK5dtYHmjajUbePuaTJtrKhI
+            7MnLboZCEiSyvkVTTx0Yjf0CAwEAAQ==
+            -----END PUBLIC KEY-----
           '';
         };
       };
     };
     rose = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = rec {
         internet = {
           ip4.addr = "129.215.165.52";
@@ -397,7 +402,7 @@ in {
       };
     };
     turingmachine = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.168";
@@ -425,7 +430,7 @@ in {
       };
     };
     harsha = {
-      owner = config.krebs.users.Mic92;
+      owner = config.krebs.users.mic92;
       nets = {
         retiolum = {
           ip4.addr = "10.243.29.184";
@@ -446,22 +451,36 @@ in {
       };
     };
     eva = {
-      owner = config.krebs.users.Mic92;
-      nets = {
+      owner = config.krebs.users.mic92;
+      nets = rec {
+        internet = {
+          # eva.thalheim.io
+          ip4.addr = "52.59.172.193";
+          ip6.addr = "2a05:d014:301:a601:ef0e:5434:d814:b8ed";
+          aliases = [ "eva.i" ];
+        };
         retiolum = {
+          via = internet;
           ip4.addr = "10.243.29.185";
           aliases = [
             "eva.r"
+            "prometheus.r"
           ];
           tinc.pubkey = ''
-            -----BEGIN RSA PUBLIC KEY-----
-            MIIBCgKCAQEAqIc+ozq3hKHMe/X3v4j+6or8LMjEV7MtQ8/+n00xpG4NkI4G38Bv
-            3nmAcV7OhN6of0fr0psbBmym+2VxCZbpl8E3g1GWSKpAvlmP/9v4wDVdrADaTvXC
-            pzCxejtCwEhKLisnMwCMJCuUPbIsSBU+IQDPKP7NP0yY5VapgW3Xl3qXpnehCW1r
-            NBZjZASnhSXcJRLJayEDN6uBviYrnnfbrHOx4fPcjQPTHX5RYr3EbgGZQO9xki44
-            9dKT4EA95lupTqC3wzuQbaNpvIuVzmggiDY/NsBIVh0/2XjGnO54wtCEPudaLnWd
-            WNtc1wfVFB6gzgG1N7msOuFUReOIfyF/ywIDAQAB
-            -----END RSA PUBLIC KEY-----
+            -----BEGIN PUBLIC KEY-----
+            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAyHptaExEcSUjEJ+RH33h
+            uRK0Ttq8mJLDosWFYcoQkcL9S54aO9kF1gRJAKPBHoOt/IGeOxg2LNYWK6UjWfUy
+            LB9c42EQ1wWZ2jSJ0LJgYzjR9cp3dlo9aHSa//O6p6eLpXRo9QLf8+aIWhNW5+BG
+            sLIMR5b6Ngc2l8xQS+wvMmvTWJt3LyfQ6AKiKwCjeyrUFiuw0VWSn1I6n7H+CZBZ
+            f/UvSxLucy1e0rvbHoTITOflIAfA84iCHsHsZjVqrx1iyOMdPtY2sBPmWhtVemDo
+            duwzUpIuaJnWS7JOB4jsYWm672/KfzK7yAivqxD19OwqfZ3nNQ7sEDb3p4udw2Lf
+            0dqHwZ5Hoj21vs3XiXX/SHcSf5QLzpj1MWBkV3r1D8I8v3P5qUbLunCofp3d9GxE
+            N0gK06gqbLNonJvC/WD7lxeY32Rh1wYXbzbD/X6aWe/oD8WMIl312hH4cHQHOnVT
+            t76NISlYTPxwX5mfFsBm8t0GjnnWY2jLwaefk7N/CwoDaKhkhmw1oeAZMuRcDRvE
+            0ecpO4CZ6CcYERLxoYHgEAj3cMkSrQ8dT6XS4b9EO4hW4zCQ3RK9xDz71+uaihuB
+            6uuTTsn7s0PYBJDNdccOf1Qt8fqPPgzqUKqeUciHojYDDPTC5KQh5m2PBv4I4iIR
+            LnKOqNUX7UCqbdaE/tfFRG0CAwEAAQ==
+            -----END PUBLIC KEY-----
           '';
         };
       };
diff --git a/krebs/3modules/external/ssh/Mic92.pub b/krebs/3modules/external/ssh/mic92.pub
index 600709c78..600709c78 100644
--- a/krebs/3modules/external/ssh/Mic92.pub
+++ b/krebs/3modules/external/ssh/mic92.pub
diff --git a/krebs/3modules/gollum.nix b/krebs/3modules/gollum.nix
new file mode 100644
index 000000000..4b4e04d16
--- /dev/null
+++ b/krebs/3modules/gollum.nix
@@ -0,0 +1,112 @@
+{ config, lib, pkgs, ... }:
+
+with lib;
+
+let
+  cfg = config.krebs.gollum;
+in
+
+{
+  options.krebs.gollum = {
+    enable = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable the Gollum service.";
+    };
+
+    address = mkOption {
+      type = types.str;
+      default = "0.0.0.0";
+      description = "IP address on which the web server will listen.";
+    };
+
+    port = mkOption {
+      type = types.int;
+      default = 4567;
+      description = "Port on which the web server will run.";
+    };
+
+    extraConfig = mkOption {
+      type = types.lines;
+      default = "";
+      description = "Content of the configuration file";
+    };
+
+    mathjax = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Enable support for math rendering using MathJax";
+    };
+
+    allowUploads = mkOption {
+      type = types.nullOr (types.enum [ "dir" "page" ]);
+      default = null;
+      description = "Enable uploads of external files";
+    };
+
+    emoji = mkOption {
+      type = types.bool;
+      default = false;
+      description = "Parse and interpret emoji tags";
+    };
+
+    branch = mkOption {
+      type = types.str;
+      default = "master";
+      example = "develop";
+      description = "Git branch to serve";
+    };
+
+    stateDir = mkOption {
+      type = types.path;
+      default = "/var/lib/gollum";
+      description = "Specifies the path of the repository directory. If it does not exist, Gollum will create it on startup.";
+    };
+
+  };
+
+  config = mkIf cfg.enable {
+
+    users.users.gollum = {
+      group = config.users.users.gollum.name;
+      description = "Gollum user";
+      home = cfg.stateDir;
+      createHome = false;
+      isSystemUser = true;
+    };
+
+    users.groups.gollum = { };
+
+    systemd.tmpfiles.rules = [
+      "d '${cfg.stateDir}' - ${config.users.users.gollum.name} ${config.users.groups.gollum.name} - -"
+    ];
+
+    systemd.services.gollum = {
+      description = "Gollum wiki";
+      after = [ "network.target" ];
+      wantedBy = [ "multi-user.target" ];
+      path = [ pkgs.git ];
+
+      preStart = ''
+        # This is safe to be run on an existing repo
+        git init ${cfg.stateDir}
+      '';
+
+      serviceConfig = {
+        User = config.users.users.gollum.name;
+        Group = config.users.groups.gollum.name;
+        ExecStart = ''
+          ${pkgs.gollum}/bin/gollum \
+            --port ${toString cfg.port} \
+            --host ${cfg.address} \
+            --config ${pkgs.writeText "gollum-config.rb" cfg.extraConfig} \
+            --ref ${cfg.branch} \
+            ${optionalString cfg.mathjax "--mathjax"} \
+            ${optionalString cfg.emoji "--emoji"} \
+            ${optionalString (cfg.allowUploads != null) "--allow-uploads ${cfg.allowUploads}"} \
+            ${cfg.stateDir}
+        '';
+      };
+    };
+  };
+}
diff --git a/krebs/3modules/hosts.nix b/krebs/3modules/hosts.nix
index 7fe01a769..ae0136303 100644
--- a/krebs/3modules/hosts.nix
+++ b/krebs/3modules/hosts.nix
@@ -24,7 +24,11 @@ in {
                   aliases = longs ++ shorts;
                   longs = filter check net.aliases;
                   shorts = let s = ".${config.krebs.dns.search-domain}"; in
-                    map (removeSuffix s) (filter (hasSuffix s) longs);
+                    optionals
+                      (config.krebs.dns.search-domain != null)
+                      (map (removeSuffix s)
+                           (filter (hasSuffix s)
+                                   longs));
                 in
                   map (addr: { ${addr} = aliases; }) net.addrs)
                 (attrValues host.nets))
@@ -44,7 +48,9 @@ in {
       hostNetAliases = host:
         mapAttrs (_: net: filter (x: x.name != null && x.value != []) [
           { name = net.ip4.addr or null; value = net.aliases; }
+          { name = net.ip4.addr or null; value = (map (alias: "4.${alias}") net.aliases); }
           { name = net.ip6.addr or null; value = net.aliases; }
+          { name = net.ip6.addr or null; value = (map (alias: "6.${alias}") net.aliases); }
         ]) host.nets;
 
       # netAliases : { ${netname} : [addrAliases] }
diff --git a/krebs/3modules/permown.nix b/krebs/3modules/permown.nix
index fe293810c..ca81e2ea5 100644
--- a/krebs/3modules/permown.nix
+++ b/krebs/3modules/permown.nix
@@ -18,6 +18,15 @@ with import <stockholm/lib>;
           default = null;
           type = types.nullOr types.groupname;
         };
+        keepGoing = mkOption {
+          default = false;
+          type = types.bool;
+          description = ''
+            Whether to keep going when chowning or chmodding fails.
+            If set to false, then errors will cause the service to restart
+            instead.
+          '';
+        };
         owner = mkOption {
           type = types.username;
         };
@@ -43,7 +52,12 @@ with import <stockholm/lib>;
       '';
     in concatMapStrings mkdir plans;
 
-    systemd.services = genAttrs' plans (plan: {
+    systemd.services = genAttrs' plans (plan: let
+      continuable = command:
+        if plan.keepGoing
+          then /* sh */ "{ ${command}; } || :"
+          else command;
+    in {
       name = "permown.${replaceStrings ["/"] ["_"] plan.path}";
       value = {
         environment = {
@@ -82,9 +96,9 @@ with import <stockholm/lib>;
                 cleanup
                 exec "$0" "$@"
               fi
-              chown -h "$OWNER_GROUP" "$path"
+              ${continuable /* sh */ ''chown -h "$OWNER_GROUP" "$path"''}
               if test -f "$path"; then
-                chmod "$FILE_MODE" "$path"
+                ${continuable /* sh */ ''chmod "$FILE_MODE" "$path"''}
               fi
             done < "$paths"
           '';
diff --git a/krebs/3modules/secret.nix b/krebs/3modules/secret.nix
index bf2c62cc9..67454d1f7 100644
--- a/krebs/3modules/secret.nix
+++ b/krebs/3modules/secret.nix
@@ -22,7 +22,7 @@ in {
           wantedBy = ["multi-user.target"];
           serviceConfig = {
             Type = "oneshot";
-            ExecStart = "${pkgs.systemd}/bin/systemctl restart ${file.service}";
+            ExecStart = "${pkgs.systemd}/bin/systemctl restart ${shell.escape file.service}";
           };
         })
         cfg.files
diff --git a/krebs/3modules/tinc.nix b/krebs/3modules/tinc.nix
index 1fca7de5c..0f5e1aa83 100644
--- a/krebs/3modules/tinc.nix
+++ b/krebs/3modules/tinc.nix
@@ -29,6 +29,9 @@ let
                 Interface = ${netname}
                 Broadcast = no
                 ${concatMapStrings (c: "ConnectTo = ${c}\n") tinc.config.connectTo}
+                ${optionalString (tinc.config.privkey_ed25519 != null)
+                  "Ed25519PrivateKeyFile = ${tinc.config.privkey_ed25519.path}"
+                }
                 PrivateKeyFile = ${tinc.config.privkey.path}
                 Port = ${toString tinc.config.host.nets.${netname}.tinc.port}
                 ${tinc.config.extraConfig}
@@ -165,6 +168,17 @@ let
           };
         };
 
+        privkey_ed25519 = mkOption {
+          type = types.nullOr types.secret-file;
+          default =
+            if config.krebs.hosts.${tinc.config.host.name}.nets.${tinc.config.netname}.tinc.pubkey_ed25519 == null then null else {
+              name = "${tinc.config.netname}.ed25519_key.priv";
+              path = "${tinc.config.user.home}/tinc.ed25519_key.priv";
+              owner = tinc.config.user;
+              source-path = toString <secrets> + "/${tinc.config.netname}.ed25519_key.priv";
+            };
+        };
+
         connectTo = mkOption {
           type = types.listOf types.str;
           ${if tinc.config.netname == "retiolum" then "default" else null} = [
@@ -198,8 +212,23 @@ let
     # TODO `environment.systemPackages = [ cfg.tincPackage cfg.iproutePackage ]` for each network,
     # avoid conflicts in environment if the packages differ
 
-    krebs.secret.files = mapAttrs' (netname: cfg:
-      nameValuePair "${netname}.rsa_key.priv" cfg.privkey