Support multiple dns zones per host

nix/modules/nixos/infrastructure/hetzner-instance/default.nix

@@ -160,7 +160,6 @@ in
                 enable = true;
                 dns = {
                   enable = true;
-                  zone_name = tldFromFqdn fqdn;
                   aRecords = lib.lists.map (d: {
                     fqdn = d;
                     content = config.khscodes.hcloud.output.server.compute.ipv4_address;

nix/modules/nixos/infrastructure/khs-openstack-instance/default.nix

@@ -103,6 +103,18 @@ in
         default = false;
       };
     };
+    network = {
+      router = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = "monitoring.kaareskovgaard.net";
+        description = "Set to null to create new router. Will make routing to monitoring instance unroutable over ipv6 (which is the only one that has ipv6 record)";
+      };
+      ipv4Cidr = lib.mkOption {
+        type = lib.types.str;
+        default = "172.24.0.0/24";
+        description = "Set to unique cidr for non monitoring instances";
+      };
+    };
     extraFirewallRules = lib.mkOption {
       type = lib.types.listOf lib.types.attrs;
       description = "Extra firewall rules added to the instance";
@@ -136,6 +148,8 @@ in
                 ssh_public_key = cfg.ssh_key;
                 firewall_rules = firewallRules;
                 user_data = builtins.toJSON provisioningUserData;
+                ip4_cidr = cfg.network.ipv4Cidr;
+                router = cfg.network.router;
               };
               khscodes.unifi.enable = true;
               khscodes.unifi.static_route.compute = {
@@ -148,7 +162,6 @@ in
                 enable = true;
                 dns = {
                   enable = true;
-                  zone_name = tldFromFqdn fqdn;
                   aRecords = lib.mkIf cfg.dns.mapIpv4Address (
                     lib.lists.map (d: {
                       fqdn = d;

nix/modules/nixos/services/nginx/default.nix

@@ -105,10 +105,21 @@ let
         description = "Extra configuration to inject into the generated nginx config";
         default = '''';
       };
-      rateLimit.enable = lib.mkOption {
+      rateLimit = {
+        enable = lib.mkOption {
+          type = lib.types.bool;
+          default = true;
+          description = "Enable rate limiting";
+        };
+        burst = lib.mkOption {
+          type = lib.types.int;
+          default = 20;
+        };
+      };
+      fail2ban.enable = lib.mkOption {
         type = lib.types.bool;
         default = true;
-        description = "Enable rate limiting";
+        description = "Enable fail2ban rate limiting";
       };
       locations = lib.mkOption {
         type = lib.types.attrsOf (
@@ -211,6 +222,10 @@ in
       };
       groups.${config.services.prometheus.exporters.nginxlog.user} = { };
     };
+    systemd.services.fail2ban = {
+      # fail2ban fails starting if the nginx log files don't exist
+      after = [ "nginx.service" ];
+    };
     services.fail2ban.jails = {
       nginx-botsearch = {
         settings = {
@@ -271,14 +286,9 @@ in
       commonHttpConfig = ''
         ${logfmt}
         access_log /var/log/nginx/access.logfmt.log logfmt;
-
-        log_format fail2ban '$remote_addr - $remote_user [$time_local] "$request" '
-                            '$status $body_bytes_sent "$http_referer" '
-                            '"$http_user_agent" "$http_x_forwarded_for"';
         log_format nginx_exporter '$remote_addr - $remote_user [$time_local] "$request" '
                                   '$status $body_bytes_sent "$http_referer" '
                                   '"$http_user_agent" "$http_x_forwarded_for" $upstream_response_time';
-        access_log /var/log/nginx/access.fail2ban.log fail2ban;
       '';
       appendHttpConfig = ''
         limit_req_zone $binary_remote_addr zone=nobots:10m rate=20r/s;
@@ -314,12 +324,11 @@ in
             else
               '''';
           reqLimit = lib.strings.optionalString value.rateLimit.enable ''
-            limit_req zone=nobots burst=20 nodelay;
+            limit_req zone=nobots burst=${toString value.rateLimit.burst} nodelay;
           '';
           extraConfig = ''
             ${mtls}
             ${reqLimit}
-            access_log /var/log/nginx/access.fail2ban.log fail2ban;
             access_log /var/log/nginx/access.logfmt.log logfmt;
             access_log /var/log/nginx/access.${name}.log nginx_exporter;
             ${value.extraConfig}

nix/modules/terranix/cloudflare/default.nix

@@ -12,6 +12,15 @@ let
       "@"
     else
       fqdn;
+  tldFromFqdn =
+    fqdn:
+    let
+      split = lib.strings.splitString "." fqdn;
+    in
+    if lib.lists.length split < 3 then
+      fqdn
+    else
+      lib.strings.removePrefix "${builtins.head split}." fqdn;
   dnsARecordModule = lib.khscodes.mkSubmodule {
     description = "Module for defining dns A/AAAA record";
     options = {
@@ -77,14 +86,11 @@ let
   };
 in
 {
+  imports = [ ./dns_zone.nix ];
   options.khscodes.cloudflare = {
     enable = lib.mkEnableOption "Enables khscodes cloudflare terranix integration";
     dns = {
       enable = lib.mkEnableOption "Enables setting up DNS records";
-      zone_name = lib.mkOption {
-        type = lib.types.str;
-        description = "The dns zone name (TLD)";
-      };
       aRecords = lib.mkOption {
         type = lib.types.listOf dnsARecordModule;
         default = [ ];
@@ -119,51 +125,77 @@ in
       version = "~> 4.0";
     };
 
-    data.cloudflare_zone.dns_zone = lib.attrsets.optionalAttrs cfg.dns.enable {
-      name = cfg.dns.zone_name;
-    };
+    khscodes.cloudflare.data.dns_zones = lib.lists.unique (
+      lib.lists.map (a: tldFromFqdn (a.fqdn)) (
+        cfg.dns.aRecords ++ cfg.dns.aaaaRecords ++ cfg.dns.txtRecords ++ cfg.dns.mxRecords
+      )
+    );
     resource.cloudflare_record = lib.attrsets.optionalAttrs cfg.dns.enable (
       lib.listToAttrs (
-        (lib.lists.map (record: {
-          name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_a";
-          value = {
-            inherit (record) content ttl proxied;
-            name = nameFromFQDNAndZone record.fqdn cfg.dns.zone_name;
-            type = "A";
-            zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
-            comment = "app=${cfg.dns.zone_name}";
-          };
-        }) cfg.dns.aRecords)
-        ++ (lib.lists.map (record: {
-          name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_aaaa";
-          value = {
-            inherit (record) content ttl proxied;
-            name = nameFromFQDNAndZone record.fqdn cfg.dns.zone_name;
-            type = "AAAA";
-            zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
-            comment = "app=${cfg.dns.zone_name}";
-          };
-        }) cfg.dns.aaaaRecords)
-        ++ (lib.lists.map (record: {
-          name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_txt";
-          value = {
-            inherit (record) content ttl;
-            name = nameFromFQDNAndZone record.fqdn cfg.dns.zone_name;
-            type = "TXT";
-            zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
-            comment = "app=${cfg.dns.zone_name}";
-          };
-        }) cfg.dns.txtRecords)
-        ++ (lib.lists.map (record: {
-          name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_mx";
-          value = {
-            inherit (record) content priority;
-            name = nameFromFQDNAndZone record.fqdn cfg.dns.zone_name;
-            type = "MX";
-            zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
-            comment = "app=${cfg.dns.zone_name}";
-          };
-        }) cfg.dns.mxRecords)
+        (lib.lists.map (
+          record:
+          let
+            zoneName = tldFromFqdn record.fqdn;
+          in
+          {
+            name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_a";
+            value = {
+              inherit (record) content ttl proxied;
+              name = nameFromFQDNAndZone record.fqdn zoneName;
+              type = "A";
+              zone_id = "\${ data.cloudflare_zone.${lib.khscodes.sanitize-terraform-name zoneName}.id }";
+              comment = "app=${zoneName}";
+            };
+          }
+        ) cfg.dns.aRecords)
+        ++ (lib.lists.map (
+          record:
+          let
+            zoneName = tldFromFqdn record.fqdn;
+          in
+          {
+            name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_aaaa";
+            value = {
+              inherit (record) content ttl proxied;
+              name = nameFromFQDNAndZone record.fqdn zoneName;
+              type = "AAAA";
+              zone_id = "\${ data.cloudflare_zone.${lib.khscodes.sanitize-terraform-name zoneName}.id }";
+              comment = "app=${zoneName}";
+            };
+          }
+        ) cfg.dns.aaaaRecords)
+        ++ (lib.lists.map (
+          record:
+          let
+            zoneName = tldFromFqdn record.fqdn;
+          in
+          {
+            name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_txt";
+            value = {
+              inherit (record) content ttl;
+              name = nameFromFQDNAndZone record.fqdn zoneName;
+              type = "TXT";
+              zone_id = "\${ data.cloudflare_zone.${lib.khscodes.sanitize-terraform-name zoneName}.id }";
+              comment = "app=${zoneName}";
+            };
+          }
+        ) cfg.dns.txtRecords)
+        ++ (lib.lists.map (
+          record:
+          let
+            zoneName = tldFromFqdn record.fqdn;
+          in
+          {
+            name = "${lib.khscodes.sanitize-terraform-name record.fqdn}_mx";
+            value = {
+              inherit (record) content priority;
+              name = nameFromFQDNAndZone record.fqdn zoneName;
+              type = "MX";
+              zone_id = "\${ data.cloudflare_zone.${lib.khscodes.sanitize-terraform-name zoneName}.id }";
+              comment = "app=${zoneName}";
+            };
+          }
+        ) cfg.dns.mxRecords)
       )
     );
   };

nix/modules/terranix/cloudflare/dns_zone.nix

@@ -0,0 +1,22 @@
+{ config, lib, ... }:
+let
+  cfg = config.khscodes.cloudflare;
+in
+{
+  options.khscodes.cloudflare = {
+    data.dns_zones = lib.mkOption {
+      type = lib.types.listOf lib.types.str;
+      default = [ ];
+    };
+  };
+  config = lib.mkIf cfg.enable {
+    data.cloudflare_zone = lib.listToAttrs (
+      lib.lists.map (zone: {
+        name = lib.khscodes.sanitize-terraform-name zone;
+        value = {
+          name = zone;
+        };
+      }) (lib.lists.unique cfg.data.dns_zones)
+    );
+  };
+}

nix/modules/terranix/openstack/default.nix

@@ -74,7 +74,7 @@ let
       };
       ip4_cidr = lib.mkOption {
         type = lib.types.str;
-        description = "IPv4 cidr of the private virtual network";
+        description = "IPv4 cidr of the private virtual network. Must override when using a named router";
         default = "172.24.0.0/24";
       };
       ip4_dns_nameservers = lib.mkOption {
@@ -111,6 +111,11 @@ let
           "2606:4700:4700::1001"
         ];
       };
+      router = lib.mkOption {
+        type = lib.types.nullOr lib.types.str;
+        default = "monitoring.kaareskovgaard.net";
+        description = "Name of the router to attach to. If null will create a new router";
+      };
       tags = lib.mkOption {
         type = lib.types.listOf lib.types.str;
       };
@@ -226,20 +231,45 @@ in
     ) cfg.compute_instance;
 
     # router
-    resource.openstack_networking_router_v2 = lib.mapAttrs' (
-      name: value:
-      let
-        sanitizedName = lib.khscodes.sanitize-terraform-name name;
-      in
-      {
-        name = sanitizedName;
-        value = {
-          name = value.name;
-          external_network_id = "\${ data.openstack_networking_network_v2.provider.id }";
-          tags = value.tags;
-        };
-      }
-    ) cfg.compute_instance;
+    resource.openstack_networking_router_v2 = lib.filterAttrs (name: value: value != null) (
+      lib.mapAttrs' (
+        name: value:
+        let
+          sanitizedName = lib.khscodes.sanitize-terraform-name name;
+        in
+        {
+          name = sanitizedName;
+          value =
+            if value.router == null then
+              {
+                name = value.name;
+                external_network_id = "\${ data.openstack_networking_network_v2.provider.id }";
+                tags = value.tags;
+              }
+            else
+              null;
+        }
+      ) cfg.compute_instance
+    );
+
+    data.openstack_networking_router_v2 = lib.filterAttrs (name: value: value != null) (
+      lib.mapAttrs' (
+        name: value:
+        let
+          sanitizedName = lib.khscodes.sanitize-terraform-name name;
+        in
+        {
+          name = sanitizedName;
+          value =
+            if value.router != null then
+              {
+                name = value.router;
+              }
+            else
+              null;
+        }
+      ) cfg.compute_instance
+    );
 
     # network
     resource.openstack_networking_network_v2 = lib.mapAttrs' (
@@ -305,7 +335,9 @@ in
         {
           name = "${sanitizedName}_ip4";
           value = {
-            router_id = "\${ openstack_networking_router_v2.${sanitizedName}.id }";
+            router_id = "\${ ${
+              lib.strings.optionalString (value.router != null) "data."
+            } openstack_networking_router_v2.${sanitizedName}.id }";
             subnet_id = "\${ openstack_networking_subnet_v2.${sanitizedName}_ip4.id }";
           };
         }
@@ -318,7 +350,9 @@ in
         {
           name = "${sanitizedName}_ip6";
           value = {
-            router_id = "\${ openstack_networking_router_v2.${sanitizedName}.id }";
+            router_id = "\${ ${
+              lib.strings.optionalString (value.router != null) "data."
+            }openstack_networking_router_v2.${sanitizedName}.id }";
             subnet_id = "\${ openstack_networking_subnet_v2.${sanitizedName}_ip6.id }";
           };
         }

nix/modules/terranix/openstack/output.nix

@@ -45,8 +45,10 @@ in
         {
           id = "\${ openstack_compute_instance_v2.${sanitizedName}.id }";
           ipv4_address = "\${ openstack_networking_floatingip_v2.${sanitizedName}.address }";
-          ipv6_address = "\${ data.openstack_networking_port_v2.${sanitizedName}.all_fixed_ips[1] }";
-          ipv6_external_gateway = "\${ [for ip in openstack_networking_router_v2.${sanitizedName}.external_fixed_ip : ip.ip_address if replace(ip.ip_address, \":\", \"\") != ip.ip_address][0] }";
+          ipv6_address = "\${ [for ip in data.openstack_networking_port_v2.${sanitizedName}.all_fixed_ips : ip if replace(ip, \":\", \"\") != ip][0] }";
+          ipv6_external_gateway = "\${ [for ip in ${
+            lib.strings.optionalString (value.router != null) "data."
+          }openstack_networking_router_v2.${sanitizedName}.external_fixed_ip : ip.ip_address if replace(ip.ip_address, \":\", \"\") != ip.ip_address][0] }";
           ipv6_cidr = "\${ openstack_networking_subnet_v2.${sanitizedName}_ip6.cidr }";
         }
       )

nix/systems/aarch64-linux/kas.codes/mailserver/dkim.nix

@@ -77,7 +77,7 @@ in
 
         resource.cloudflare_record.dkim_rsa = {
           name = "snm_rsa._domainkey";
-          zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
+          zone_id = "\${ data.cloudflare_zone.kas_codes.id }";
           type = "TXT";
           content = ''"v=DKIM1;k=rsa;p=${dkimPublicKey "tls_private_key.dkim_rsa"}"'';
           comment = "app=kas.codes";
@@ -86,7 +86,7 @@ in
 
         resource.cloudflare_record.dkim_ed25519 = {
           name = "snm_ed25519._domainkey";
-          zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
+          zone_id = "\${ data.cloudflare_zone.kas_codes.id }";
           type = "TXT";
           content = ''"v=DKIM1;k=ed25519;p=${dkimPublicKey "tls_private_key.dkim_ed25519"}"'';
           comment = "app=kas.codes";
@@ -95,7 +95,7 @@ in
 
         resource.cloudflare_record.spf = {
           name = "@";
-          zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
+          zone_id = "\${ data.cloudflare_zone.kas_codes.id }";
           type = "TXT";
           content = ''"v=spf1 ip4:${config.khscodes.hcloud.output.server.compute.ipv4_address} ip6:${config.khscodes.hcloud.output.server.compute.ipv6_address} -all"'';
           comment = "app=kas.codes";
@@ -103,7 +103,7 @@ in
         };
         resource.cloudflare_record.dmarc = {
           name = "_dmarc";
-          zone_id = "\${ data.cloudflare_zone.dns_zone.id }";
+          zone_id = "\${ data.cloudflare_zone.kas_codes.id }";
           type = "TXT";
           content = ''"v=DMARC1; p=reject; adkim=s; aspf=s;"'';
           comment = "app=kas.codes";

nix/systems/aarch64-linux/mail.kaareskovgaard.net/default.nix

@@ -0,0 +1,16 @@
+{
+  inputs,
+  ...
+}:
+{
+  imports = [
+    "${inputs.self}/nix/profiles/nixos/hetzner-server.nix"
+  ];
+  khscodes.infrastructure.hetzner-instance = {
+    enable = true;
+    mapRdns = true;
+    server_type = "cax11";
+  };
+  khscodes.networking.fqdn = "mail.kaareskovgaard.net";
+  system.stateVersion = "25.05";
+}

nix/systems/aarch64-linux/security.kaareskovgaard.net/kanidm.nix

@@ -7,10 +7,16 @@
 let
   domain = "login.kaareskovgaard.net";
   bootstrapping = config.khscodes."security.kaareskovgaard.net".bootstrap.enable;
-  openbaoAppBasicSecretFile = "/var/lib/vault-agent/kanidm/openbao_basic_secret";
-  openbaoCliAppBasicSecretFile = "/var/lib/vault-agent/kanidm/openbao_cli_basic_secret";
-  monitoringAppBasicSecretFile = "/var/lib/vault-agent/kanidm/monitoring_basic_secret";
-  forgejoAppBasicSecretFile = "/var/lib/vault-agent/kanidm/forgejo_basic_secret";
+  openbaoAppBasicSecretFile = "/run/kanidm/openbao_basic_secret";
+  openbaoCliAppBasicSecretFile = "/run/kanidm/openbao_cli_basic_secret";
+  monitoringAppBasicSecretFile = "/run/kanidm/monitoring_basic_secret";
+  forgejoAppBasicSecretFile = "/run/kanidm/forgejo_basic_secret";
+  secretFiles = [
+    openbaoAppBasicSecretFile
+    openbaoCliAppBasicSecretFile
+    monitoringAppBasicSecretFile
+    forgejoAppBasicSecretFile
+  ];
   openbaoDomain = config.khscodes.infrastructure.openbao.domain;
   openbaoAllowedRedirectUrls = [
     "https://${openbaoDomain}/ui/vault/auth/kanidm/oidc/callback"
@@ -183,9 +189,7 @@ in
   # Don't add dependencies from bootstrapping when not bootstrapping.
   systemd.services.kanidm = lib.mkIf (!bootstrapping) {
     unitConfig = {
-      ConditionPathExists = [
-        openbaoAppBasicSecretFile
-      ];
+      ConditionPathExists = secretFiles;
     };
   };
 

nix/systems/x86_64-linux/chat.kaareskovgaard.net/default.nix

@@ -0,0 +1,79 @@
+{ inputs, config, ... }:
+let
+  mattermost = config.services.mattermost;
+in
+{
+  imports = [
+    "${inputs.self}/nix/profiles/nixos/khs-openstack-server.nix"
+  ];
+  services.postgresql = {
+    enable = true;
+    ensureDatabases = [ "mattermost" ];
+    ensureUsers = [
+      {
+        name = "mattermost";
+        ensureDBOwnership = true;
+      }
+    ];
+  };
+  services.mattermost = {
+    enable = true;
+    siteName = "chat.kaareskovgaard.net";
+    siteUrl = "https://chat.kaareskovgaard.net";
+    database = {
+      create = false;
+    };
+    telemetry = {
+      enableSecurityAlerts = false;
+      enableDiagnostics = false;
+    };
+    settings = {
+      EmailSettings = {
+        EnableSignUpWithEmail = false;
+        EnableSignInWithEmail = true;
+        EnableSignInWithUsername = false;
+      };
+    };
+  };
+  khscodes = {
+    infrastructure.khs-openstack-instance = {
+      enable = true;
+      flavor = "m.small";
+      network = {
+        ipv4Cidr = "172.24.1.0/24";
+      };
+    };
+    services.nginx = {
+      enable = true;
+      virtualHosts."chat.kaareskovgaard.net" = {
+        rateLimit.burst = 100;
+        locations."/" = {
+          proxyPass = "http://127.0.0.1:${toString mattermost.port}";
+          proxyWebsockets = true;
+          recommendedProxySettings = true;
+        };
+      };
+    };
+    services.vault-agent.templates = [
+      {
+        contents = ''
+          {{- with secret "kanidm/data/apps/mattermost" -}}
+          MM_OPENIDSETTINGS_SECRET={{ .Data.data.basic_secret }}
+          {{- end -}}
+        '';
+        destination = "/run/mattermost/env";
+        owner = "mattermost";
+        group = "mattermost";
+        perms = "0600";
+        reloadOrRestartUnits = [ "mattermost.service" ];
+      }
+    ];
+    infrastructure.vault-server-approle.policy = {
+      "kanidm/data/apps/mattermost" = {
+        capabilities = [ "read" ];
+      };
+    };
+  };
+  khscodes.networking.fqdn = "chat.kaareskovgaard.net";
+  system.stateVersion = "25.05";
+}

nix/systems/x86_64-linux/monitoring.kaareskovgaard.net/default.nix

@@ -190,6 +190,9 @@ in
     infrastructure.khs-openstack-instance = {
       enable = true;
       flavor = "m.large";
+      network = {
+        router = null;
+      };
     };
     services.nginx = {
       enable = true;