diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..b2be92b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+result
diff --git a/README.md b/README.md
index e005679..db47956 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
-# config-core-services-01
+# NixOS configuration of klubrz's machines
 
diff --git a/krops.nix b/krops.nix
new file mode 100644
index 0000000..174498a
--- /dev/null
+++ b/krops.nix
@@ -0,0 +1,24 @@
+let
+  krops = builtins.fetchGit {
+    url = "https://cgit.krebsco.de/krops/";
+  };
+  lib = import "${krops}/lib";
+  pkgs = import "${krops}/pkgs" {};
+  source = machine: lib.evalSource [
+    {
+      config.file = toString ./machines;
+      nixos-config.symlink = "config/${machine}/configuration.nix";
+      nixpkgs.git = {
+        clean.exclude = [ "/.version-suffix" ];
+        ref = "973910f5c31b9ba6c171c33a8bd7199990b14c72"; # nixos-21.05
+        url = https://github.com/NixOS/nixpkgs;
+      };
+    }
+  ];
+in
+  {
+    core-services-01 = pkgs.krops.writeDeploy "deploy-core-services-01" {
+      source = source "core-services-01";
+      target = "root@core01.internal.rz.ens.wtf";
+    };
+  }
diff --git a/machines/core-services-01/acme-dns.nix b/machines/core-services-01/acme-dns.nix
new file mode 100644
index 0000000..82d3ff1
--- /dev/null
+++ b/machines/core-services-01/acme-dns.nix
@@ -0,0 +1,26 @@
+{ config, ... }:
+let
+  my = config.my;
+in
+{
+  services.acme-dns = {
+    enable = true;
+    domain = "acme.${my.subZone}";
+    nsname = "acme.${my.subZone}";
+    nsadmin = my.emailWithDot;
+    dns.listen = "[${my.ipv6.acme}]"; # :-).
+    records = [
+      "acme.${my.subZone}. AAAA ${my.ipv6.acme}"
+      "acme.${my.subZone}. NS acme.${my.subZone}."
+    ];
+  };
+
+  services.nginx.enable = true;
+  services.nginx.virtualHosts."acme.${my.subZone}" = {
+    forceSSL = true;
+    enableACME = true;
+    locations."/" = {
+      proxyPass = "http://localhost:8090";
+    };
+  };
+}
diff --git a/machines/core-services-01/acme-ssl.nix b/machines/core-services-01/acme-ssl.nix
new file mode 100644
index 0000000..2403cd6
--- /dev/null
+++ b/machines/core-services-01/acme-ssl.nix
@@ -0,0 +1,14 @@
+{ config, lib, ... }:
+
+let
+  my = config.my;
+in
+{
+  security.acme.acceptTerms = true;
+  security.acme.email = my.email;
+
+  security.acme.server =
+    if my.acmeStaging
+    then "https://acme-staging-v02.api.letsencrypt.org/directory"
+    else null;
+}
diff --git a/machines/core-services-01/configuration.nix b/machines/core-services-01/configuration.nix
new file mode 100644
index 0000000..691cd3f
--- /dev/null
+++ b/machines/core-services-01/configuration.nix
@@ -0,0 +1,92 @@
+{ config, pkgs, lib, ... }:
+
+{
+  imports =
+    [ # Include the results of the hardware scan.
+      ./hardware-configuration.nix
+      ./nur.nix
+      ./rz.nix
+      ./monitoring.nix
+      ./programs.nix
+      ./system.nix
+      ./acme-ssl.nix
+      ./dns.nix
+      ./netboot-server.nix
+      ./qemu.nix
+      ./gitea.nix
+      ./dokuwiki.nix
+      ./nginx.nix
+      ./keycloak.nix
+      ./acme-dns.nix
+      ./secrets
+      # TODO push to gitea
+      # TODO ./gotify.nix
+      # TODO(Raito): ./backups.nix
+      # TODO(Raito): ./snmp.nix
+      # TODO(Raito): ./sflow.nix?
+    ];
+
+  # Use the systemd-boot EFI boot loader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  boot.initrd.supportedFilesystems = [ "zfs" ];
+  boot.supportedFilesystems = [ "zfs" ];
+
+  networking.hostName = "klubrz-core-services-01";
+  networking.hostId = "64838310";
+
+  time.timeZone = "Europe/Paris";
+
+  # The global useDHCP flag is deprecated, therefore explicitly set to false here.
+  # Per-interface useDHCP will be mandatory in the future, so this generated config
+  # replicates the default behaviour.
+  networking.useDHCP = false;
+  # Adieu, hackENS — networking.interfaces.ens18.useDHCP = true;
+  networking.interfaces.ens19.useDHCP = true;
+
+  # Configure network proxy if necessary
+  # networking.proxy.default = "http://user:password@proxy:port/";
+  # networking.proxy.noProxy = "127.0.0.1,localhost,internal.domain";
+
+  # Select internationalisation properties.
+  i18n.defaultLocale = "en_US.UTF-8";
+  console = {
+    font = "Lat2-Terminus16";
+    keyMap = "us";
+  };
+
+  # Some programs need SUID wrappers, can be configured further or are
+  # started in user sessions.
+  programs.mtr.enable = true;
+  programs.gnupg.agent = {
+    enable = true;
+    enableSSHSupport = true;
+  };
+
+  # List services that you want to enable:
+
+  services.zfs.autoScrub.enable = true;
+
+  # Enable the OpenSSH daemon.
+  services.openssh.enable = true;
+  users.users.root.openssh.authorizedKeys.keyFiles = [
+    ./pubkeys/gdd.keys
+    ./pubkeys/raito.keys
+    ./pubkeys/hackens-milieu.keys
+  ];
+
+  # Open ports in the firewall.
+  # networking.firewall.allowedTCPPorts = [ ... ];
+  # networking.firewall.allowedUDPPorts = [ ... ];
+  # Or disable the firewall altogether.
+  networking.firewall.enable = false;
+
+  # This value determines the NixOS release from which the default
+  # settings for stateful data, like file locations and database versions
+  # on your system were taken. It‘s perfectly fine and recommended to leave
+  # this value at the release version of the first install of this system.
+  # Before changing this value read the documentation for this option
+  # (e.g. man configuration.nix or on https://nixos.org/nixos/options.html).
+  system.stateVersion = "20.09"; # Did you read the comment?
+}
diff --git a/machines/core-services-01/dns.nix b/machines/core-services-01/dns.nix
new file mode 100644
index 0000000..2161481
--- /dev/null
+++ b/machines/core-services-01/dns.nix
@@ -0,0 +1,28 @@
+{ config, lib, ... }:
+
+with lib;
+
+let
+  dns = import (builtins.fetchTarball "https://github.com/kirelagin/dns.nix/archive/master.tar.gz");
+  my = config.my;
+in
+{
+  services.unbound = {
+    enable = true;
+    settings = {
+      server = {
+        access-control = [ "127.0.0.0/8 allow" "::1/128 allow" ] ++ map (v: "${v} allow") my.privateRanges;
+        interface = [ "127.0.0.1" ] ++ my.ipv4;
+      };
+    };
+  };
+  services.nsd = {
+    enable = true;
+    interfaces = my.ipv6.standard;
+    zones = {
+      ${my.subZone} = {
+        data = dns.lib.toString my.subZone (import ./subZone.nix { inherit dns config; });
+      };
+    };
+  };
+}
diff --git a/machines/core-services-01/dokuwiki.nix b/machines/core-services-01/dokuwiki.nix
new file mode 100644
index 0000000..a0be037
--- /dev/null
+++ b/machines/core-services-01/dokuwiki.nix
@@ -0,0 +1,33 @@
+{ config, ... }:
+
+let
+  my = config.my;
+in
+{
+  services.dokuwiki."wiki.${my.subZone}" = {
+    enable = true;
+    hostName = "wiki.${my.subZone}";
+    acl = ''
+      *    @ALL      1
+      *    @admin    16
+    '';
+    nginx = {
+      enableACME = true;
+      forceSSL = true;
+    };
+  };
+
+  /*
+  services.nginx = {
+    enable = true;
+
+    virtualHosts."wiki.${my.subZone}" = {
+      enableACME = true;
+      forceSSL = true;
+      locations."/" = {
+        proxyPass = "htttp://127.0.0.1:${toString port}";
+      };
+    };
+  };
+  */
+}
diff --git a/machines/core-services-01/gitea.nix b/machines/core-services-01/gitea.nix
new file mode 100644
index 0000000..afe9a5b
--- /dev/null
+++ b/machines/core-services-01/gitea.nix
@@ -0,0 +1,29 @@
+{ config, ... }:
+
+let
+  my = config.my;
+  port = 3000;
+in
+{
+  services.gitea = {
+    enable = true;
+    domain = "git.${my.subZone}";
+    rootUrl = "https://git.${my.subZone}/";
+    httpAddress = "127.0.0.1";
+    httpPort = port;
+    database.type = "postgres";
+    disableRegistration = true;
+  };
+
+  services.nginx = {
+    enable = true;
+
+    virtualHosts."git.${my.subZone}" = {
+      enableACME = true;
+      forceSSL = true;
+      locations."/" = {
+        proxyPass = "http://127.0.0.1:${toString port}";
+      };
+    };
+  };
+}
diff --git a/machines/core-services-01/hardware-configuration.nix b/machines/core-services-01/hardware-configuration.nix
new file mode 100644
index 0000000..d4aca08
--- /dev/null
+++ b/machines/core-services-01/hardware-configuration.nix
@@ -0,0 +1,35 @@
+# Do not modify this file!  It was generated by ‘nixos-generate-config’
+# and may be overwritten by future invocations.  Please make changes
+# to /etc/nixos/configuration.nix instead.
+{ config, lib, pkgs, modulesPath, ... }:
+
+{
+  imports =
+    [ (modulesPath + "/profiles/qemu-guest.nix")
+    ];
+
+  boot.initrd.availableKernelModules = [ "ata_piix" "uhci_hcd" "virtio_pci" "sd_mod" "sr_mod" ];
+  boot.initrd.kernelModules = [ ];
+  boot.kernelModules = [ ];
+  boot.extraModulePackages = [ ];
+
+  fileSystems."/" =
+    { device = "rpool/root/nixos";
+      fsType = "zfs";
+    };
+
+  fileSystems."/home" =
+    { device = "rpool/home";
+      fsType = "zfs";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/56B8-1FC0";
+      fsType = "vfat";
+    };
+
+  swapDevices =
+    [ { device = "/dev/disk/by-uuid/0fe95042-8197-4969-a549-65565cf70171"; }
+    ];
+
+}
diff --git a/machines/core-services-01/keycloak.nix b/machines/core-services-01/keycloak.nix
new file mode 100644
index 0000000..8886a75
--- /dev/null
+++ b/machines/core-services-01/keycloak.nix
@@ -0,0 +1,27 @@
+{ config, ... }:
+let
+  my = config.my;
+  port = 8080;
+in
+{
+  services.keycloak = {
+    enable = true;
+    initialAdminPassword = "changemeasap";
+    database.createLocally = true;
+    database.passwordFile = config.age.secrets.keycloakDatabasePasswordFile.path; 
+    frontendUrl = "https://auth.${my.subZone}/auth/";
+    forceBackendUrlToFrontendUrl = true;
+    httpPort = toString port;
+    extraConfig = {
+      "subsystem=undertow"."server=default-server"."http-listener=default".proxy-address-forwarding = true;
+    };
+  };
+
+  services.nginx.virtualHosts."auth.${my.subZone}" = {
+    forceSSL = true;
+    enableACME = true;
+    locations."/" = {
+      proxyPass = "http://127.0.0.1:${toString port}";
+    };
+  };
+}
diff --git a/machines/core-services-01/monitoring.nix b/machines/core-services-01/monitoring.nix
new file mode 100644
index 0000000..8316012
--- /dev/null
+++ b/machines/core-services-01/monitoring.nix
@@ -0,0 +1,44 @@
+{ config, pkgs, ... }:
+let
+  my = config.my;
+  realm = "ClubReseau";
+in
+{
+  services.netdata.enable = true;
+
+  services.oauth2_proxy = {
+    enable = true;
+    keyFile = config.age.secrets.oauth2ProxyKeyFile.path;
+    provider = "keycloak";
+    email.domains = [ "*" ];
+    setXauthrequest = true;
+    scope = "profile";
+    loginURL = "https://auth.${my.subZone}/auth/realms/${realm}/protocol/openid-connect/auth";
+    redeemURL = "https://auth.${my.subZone}/auth/realms/${realm}/protocol/openid-connect/token";
+    profileURL = "https://auth.${my.subZone}/auth/realms/${realm}/protocol/openid-connect/userinfo";
+    validateURL = "https://auth.${my.subZone}/auth/realms/${realm}/protocol/openid-connect/userinfo";
+    redirectURL = "https://monitoring.${my.subZone}/oauth2/callback";
+    reverseProxy = true;
+    passHostHeader = true;
+
+    nginx = {
+      virtualHosts = [ "monitoring.${my.subZone}" ];
+    };
+  };
+
+  services.nginx = {
+    enable = true;
+
+    virtualHosts."monitoring.${my.subZone}" = {
+      enableACME = true;
+      forceSSL = true;
+
+      locations."/".proxyPass = "http://localhost:19999";
+    };
+  };
+
+  # services.smartd = {
+  #   enable = true;
+  #   extraOptions = [ "-A /var/log/smartd/" ]; # For netdata
+  # };
+}
diff --git a/machines/core-services-01/my.nix b/machines/core-services-01/my.nix
new file mode 100644
index 0000000..5a83031
--- /dev/null
+++ b/machines/core-services-01/my.nix
@@ -0,0 +1,95 @@
+{ config, lib, ... }:
+
+with lib;
+with types;
+let
+  cfg = config.my;
+  mkAddress = addr: let
+    splitted = lib.splitString "/" addr;
+    elemAt = builtins.elemAt splitted;
+  in
+  { address = (elemAt 0); prefixLength = lib.toInt (elemAt 1); };
+in
+{
+  options.my = {
+    email = mkOption {
+      description = "Admin email";
+      type = str;
+      default = "";
+      example = "clipper@ens.fr";
+    };
+
+    emailWithDot = mkOption {
+      description = "Admin email with dots";
+      type = str;
+      default = lib.replaceStrings ["@"] ["."] cfg.email;
+      example = "clipper.ens.fr";
+    };
+    
+    acmeStaging = mkOption {
+      description = "Enable staging servers";
+      type = bool;
+      default = false;
+    };
+    
+     subZone = mkOption {
+      description = "Sub zone for hosting the services";
+      type = str;
+      default = "";
+      example = "ens.pizza";
+    };
+    
+     ipv4 = mkOption {
+      description = "Public IPv4 addresses without prefix";
+      type = listOf str;
+      example = [ "192.186.1.153" ];
+      default = map (v: (mkAddress v).address) cfg.ipv4Full;
+    };
+
+     ipv4Full = mkOption {
+      description = "Public IPv4 addresses with prefix";
+      type = listOf str;
+      default = [];
+      example = [ "192.186.1.153/24" ];
+    };
+
+     ipv6.standard = mkOption {
+      description = "Public IPv6 addresses for standard services without prefix";
+      type = listOf str;
+      example = [ "2001:470:1f13:21d:f515:b348:cd48:e064" ];
+      default = map (v: (mkAddress v).address) cfg.ipv6.standardFull;
+    };
+
+    ipv6.standardFull = mkOption {
+      description = "Public IPv6 addresses for standard services with prefix";
+      type = listOf str;
+      example = [ "2001:470:1f13:21d:f515:b348:cd48:e064/64" ];
+    };
+
+    ipv6.acme = mkOption {
+      description = "Public IPv6 address for ACME services (acme-dns) without prefi";
+      type = str;
+      default = (mkAddress cfg.ipv6.acmeFull).address;
+      example = "2001:470:1f13:21d:f515:b348:cd48:e064/64";
+    };
+
+    ipv6.acmeFull = mkOption {
+      description = "Public IPv6 address for ACME services (acme-dns) with prefix";
+      type = str;
+      example = "2001:470:1f13:21d:f515:b348:cd48:e064/64";
+    };
+
+    privateRanges = mkOption {
+      description = "Internal management ranges for access control";
+      type = listOf str;
+      example = [ "10.1.0.0/22" ];
+    };
+  };
+
+  config = {
+    networking.interfaces.ens19 = {
+      ipv4.addresses = map mkAddress cfg.ipv4Full;
+      ipv6.addresses = map mkAddress (cfg.ipv6.standardFull ++ [ cfg.ipv6.acmeFull ]);
+    };
+  };
+}
diff --git a/machines/core-services-01/netboot-server.nix b/machines/core-services-01/netboot-server.nix
new file mode 100644
index 0000000..ac0bd87
--- /dev/null
+++ b/machines/core-services-01/netboot-server.nix
@@ -0,0 +1,45 @@
+{ pkgs, config, ... }:
+let
+  bootSystem = import <nixpkgs/nixos> {
+    configuration = { config, pkgs, lib, ... }: with lib; {
+      imports = [
+        <nixpkgs/nixos/modules/installer/netboot/netboot-minimal.nix>
+      ];
+      # Early init the serial console
+      boot.kernelParams = [ "console=tty1" "console=ttyS0,115200" ];
+
+      ## Some useful options for setting up a new system
+      services.getty.autologinUser = mkForce "root";
+      # Enable sshd wich gets disabled by netboot-minimal.nix
+      systemd.services.sshd.wantedBy = mkOverride 0 [ "multi-user.target" ];
+      users.users.root.openssh.authorizedKeys.keyFiles = [
+        ./pubkeys/gdd.keys
+        ./pubkeys/raito.keys
+        ./pubkeys/hackens-milieu.keys
+      ];
+      programs.mosh.enable = true;
+
+      console.keyMap = "us";
+    };
+  };
+  netboot = pkgs.symlinkJoin {
+    name = "netboot";
+    paths = with bootSystem.config.system.build; [
+      netbootRamdisk
+      kernel
+      netbootIpxeScript
+    ];
+    preferLocalBuild = true;
+  };
+in {
+  services.pixiecore = {
+    enable = true;
+    kernel = "${netboot}/bzImage";
+    initrd = "${netboot}/initrd";
+    cmdLine = "init=${bootSystem.config.system.build.toplevel}/init loglevel=4";
+    debug = true;
+    dhcpNoBind = true;
+    port = 64172;
+    statusPort = 64172;
+  };
+}
diff --git a/machines/core-services-01/nginx.nix b/machines/core-services-01/nginx.nix
new file mode 100644
index 0000000..5bf0bcc
--- /dev/null
+++ b/machines/core-services-01/nginx.nix
@@ -0,0 +1,9 @@
+{ ... }:
+{
+  services.nginx = {
+    recommendedTlsSettings = true;
+    recommendedProxySettings = true;
+    recommendedOptimisation = true;
+    recommendedGzipSettings = true;
+  };
+}
diff --git a/machines/core-services-01/nix/sources.json b/machines/core-services-01/nix/sources.json
new file mode 100644
index 0000000..359fd04
--- /dev/null
+++ b/machines/core-services-01/nix/sources.json
@@ -0,0 +1,32 @@
+{
+    "agenix": {
+        "branch": "master",
+        "description": "age-encrypted secrets for NixOS",
+        "homepage": "",
+        "owner": "ryantm",
+        "repo": "agenix",
+        "rev": "fb00f178b3a49a39cc964049075439b575d36d60",
+        "sha256": "0rb99dbwnaf8sgjbshwk1bizs51jild3zg61a5yqw3h0vcxalzrp",
+        "type": "tarball",
+        "url": "https://github.com/ryantm/agenix/archive/fb00f178b3a49a39cc964049075439b575d36d60.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    },
+    "klubrz-nur": {
+        "branch": "main",
+        "repo": "https://git.rz.ens.wtf/Klub-RZ/nur",
+        "rev": "48597e362c87365976ebc0168fb0e5678aa3865d",
+        "type": "git"
+    },
+    "niv": {
+        "branch": "master",
+        "description": "Easy dependency management for Nix projects",
+        "homepage": "https://github.com/nmattia/niv",
+        "owner": "nmattia",
+        "repo": "niv",
+        "rev": "e0ca65c81a2d7a4d82a189f1e23a48d59ad42070",
+        "sha256": "1pq9nh1d8nn3xvbdny8fafzw87mj7gsmp6pxkdl65w2g18rmcmzx",
+        "type": "tarball",
+        "url": "https://github.com/nmattia/niv/archive/e0ca65c81a2d7a4d82a189f1e23a48d59ad42070.tar.gz",
+        "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
+    }
+}
diff --git a/machines/core-services-01/nix/sources.nix b/machines/core-services-01/nix/sources.nix
new file mode 100644
index 0000000..1938409
--- /dev/null
+++ b/machines/core-services-01/nix/sources.nix
@@ -0,0 +1,174 @@
+# This file has been generated by Niv.
+
+let
+
+  #
+  # The fetchers. fetch_<type> fetches specs of type <type>.
+  #
+
+  fetch_file = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchurl { inherit (spec) url sha256; name = name'; }
+      else
+        pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
+
+  fetch_tarball = pkgs: name: spec:
+    let
+      name' = sanitizeName name + "-src";
+    in
+      if spec.builtin or true then
+        builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
+      else
+        pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
+
+  fetch_git = name: spec:
+    let
+      ref =
+        if spec ? ref then spec.ref else
+          if spec ? branch then "refs/heads/${spec.branch}" else
+            if spec ? tag then "refs/tags/${spec.tag}" else
+              abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
+    in
+      builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
+
+  fetch_local = spec: spec.path;
+
+  fetch_builtin-tarball = name: throw
+    ''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=tarball -a builtin=true'';
+
+  fetch_builtin-url = name: throw
+    ''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
+        $ niv modify ${name} -a type=file -a builtin=true'';
+
+  #
+  # Various helpers
+  #
+
+  # https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
+  sanitizeName = name:
+    (
+      concatMapStrings (s: if builtins.isList s then "-" else s)
+        (
+          builtins.split "[^[:alnum:]+._?=-]+"
+            ((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
+        )
+    );
+
+  # The set of packages used when specs are fetched using non-builtins.
+  mkPkgs = sources: system:
+    let
+      sourcesNixpkgs =
+        import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
+      hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
+      hasThisAsNixpkgsPath = <nixpkgs> == ./.;
+    in
+      if builtins.hasAttr "nixpkgs" sources
+      then sourcesNixpkgs
+      else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
+        import <nixpkgs> {}
+      else
+        abort
+          ''
+            Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
+            add a package called "nixpkgs" to your sources.json.
+          '';
+
+  # The actual fetching function.
+  fetch = pkgs: name: spec:
+
+    if ! builtins.hasAttr "type" spec then
+      abort "ERROR: niv spec ${name} does not have a 'type' attribute"
+    else if spec.type == "file" then fetch_file pkgs name spec
+    else if spec.type == "tarball" then fetch_tarball pkgs name spec
+    else if spec.type == "git" then fetch_git name spec
+    else if spec.type == "local" then fetch_local spec
+    else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
+    else if spec.type == "builtin-url" then fetch_builtin-url name
+    else
+      abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
+
+  # If the environment variable NIV_OVERRIDE_${name} is set, then use
+  # the path directly as opposed to the fetched source.
+  replace = name: drv:
+    let
+      saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
+      ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
+    in
+      if ersatz == "" then drv else
+        # this turns the string into an actual Nix path (for both absolute and
+        # relative paths)
+        if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
+
+  # Ports of functions for older nix versions
+
+  # a Nix version of mapAttrs if the built-in doesn't exist
+  mapAttrs = builtins.mapAttrs or (
+    f: set: with builtins;
+    listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
+  );
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
+  range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
+  stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
+
+  # https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
+  stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
+  concatMapStrings = f: list: concatStrings (map f list);
+  concatStrings = builtins.concatStringsSep "";
+
+  # https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
+  optionalAttrs = cond: as: if cond then as else {};
+
+  # fetchTarball version that is compatible between all the versions of Nix
+  builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchTarball;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchTarball attrs;
+
+  # fetchurl version that is compatible between all the versions of Nix
+  builtins_fetchurl = { url, name ? null, sha256 }@attrs:
+    let
+      inherit (builtins) lessThan nixVersion fetchurl;
+    in
+      if lessThan nixVersion "1.12" then
+        fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
+      else
+        fetchurl attrs;
+
+  # Create the final "sources" from the config
+  mkSources = config:
+    mapAttrs (
+      name: spec:
+        if builtins.hasAttr "outPath" spec
+        then abort
+          "The values in sources.json should not have an 'outPath' attribute"
+        else
+          spec // { outPath = replace name (fetch config.pkgs name spec); }
+    ) config.sources;
+
+  # The "config" used by the fetchers
+  mkConfig =
+    { sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
+    , sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
+    , system ? builtins.currentSystem
+    , pkgs ? mkPkgs sources system
+    }: rec {
+      # The sources, i.e. the attribute set of spec name to spec
+      inherit sources;
+
+      # The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
+      inherit pkgs;
+    };
+
+in
+mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }
diff --git a/machines/core-services-01/nur.nix b/machines/core-services-01/nur.nix
new file mode 100644
index 0000000..119c503
--- /dev/null
+++ b/machines/core-services-01/nur.nix
@@ -0,0 +1,17 @@
+{ lib, pkgs, ... }:
+let
+  nivSources = import ./nix/sources.nix;
+  rz-src = nivSources.klubrz-nur;
+  rz-no-pkgs = (import nivSources.klubrz-nur {});
+in
+{
+  nixpkgs.config.packageOverrides = {
+    rz = import rz-src { inherit pkgs; };
+  };
+
+  imports = [
+    "${nivSources.agenix}/modules/age.nix"
+  ] ++ lib.attrValues rz-no-pkgs.modules;
+
+  nixpkgs.overlays = [];
+}
diff --git a/machines/core-services-01/programs.nix b/machines/core-services-01/programs.nix
new file mode 100644
index 0000000..9250d40
--- /dev/null
+++ b/machines/core-services-01/programs.nix
@@ -0,0 +1,23 @@
+{ pkgs, ... }:
+let pkgsList = with pkgs; [
+  nix-prefetch-git
+  dnsutils
+
+  unzip
+  zip
+  ripgrep
+
+  niv
+  nixfmt
+  ];
+in
+{
+  imports = [
+    ./vim.nix
+  ];
+  programs.tmux.enable = true;
+  programs.wireshark.enable = true;
+  programs.mosh.enable = true;
+
+  environment.systemPackages = pkgsList;
+}
diff --git a/machines/core-services-01/pubkeys/gdd.keys b/machines/core-services-01/pubkeys/gdd.keys
new file mode 100644
index 0000000..b5d4e40
--- /dev/null
+++ b/machines/core-services-01/pubkeys/gdd.keys
@@ -0,0 +1,2 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICE7TN5NQKGojNGIeTFiHjLHTDQGT8i05JFqX/zLW2zc
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIIFbkPWWZzOBaRdx4+7xQUgxDwuncSl2fxAeVuYfVUPZ
diff --git a/machines/core-services-01/pubkeys/hackens-milieu.keys b/machines/core-services-01/pubkeys/hackens-milieu.keys
new file mode 100644
index 0000000..c79c039
--- /dev/null
+++ b/machines/core-services-01/pubkeys/hackens-milieu.keys
@@ -0,0 +1 @@
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIH3+w4+nyJG8lr2mh0S9Zf8j2/6H5smlO87s6KNLlhkF hackens@hackens-milieu
diff --git a/machines/core-services-01/pubkeys/raito.keys b/machines/core-services-01/pubkeys/raito.keys
new file mode 100644
index 0000000..0f48a59
--- /dev/null
+++ b/machines/core-services-01/pubkeys/raito.keys
@@ -0,0 +1,4 @@
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABAQDcEkYM1r8QVNM/G5CxJInEdoBCWjEHHDdHlzDYNSUIdHHsn04QY+XI67AdMCm8w30GZnLUIj5RiJEWXREUApby0GrfxGGcy8otforygfgtmuUKAUEHdU2MMwrQI7RtTZ8oQ0USRGuqvmegxz3l5caVU7qGvBllJ4NUHXrkZSja2/51vq80RF4MKkDGiz7xUTixI2UcBwQBCA/kQedKV9G28EH+1XfvePqmMivZjl+7VyHsgUVj9eRGA1XWFw59UPZG8a7VkxO/Eb3K9NF297HUAcFMcbY6cPFi9AaBgu3VC4eetDnoN/+xT1owiHi7BReQhGAy/6cdf7C/my5ehZwD
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIKIIcqryU28FkV+UpiTnGCOfwKO5jFhkdvU7a7Ew2KoZ
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMLf6B8VV//BhOWihYK8Zy1CJ3sg4w2bP0aBO0VPs4hS
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIE0xMwWedkKosax9+7D2OlnMxFL/eV4CvFZLsbLptpXr
diff --git a/machines/core-services-01/qemu.nix b/machines/core-services-01/qemu.nix
new file mode 100644
index 0000000..729cdcd
--- /dev/null
+++ b/machines/core-services-01/qemu.nix
@@ -0,0 +1,4 @@
+{ pkgs, ... }:
+{
+  services.qemuGuest.enable = true;
+}
diff --git a/machines/core-services-01/rz.nix b/machines/core-services-01/rz.nix
new file mode 100644
index 0000000..4f096e4
--- /dev/null
+++ b/machines/core-services-01/rz.nix
@@ -0,0 +1,18 @@
+{ lib, ... }:
+
+{
+  imports = [ ./my.nix ];
+
+  my = {
+    email = "club-reseau@lists.ens.psl.eu";
+    acmeStaging = false;
+    subZone = "rz.ens.wtf";
+    ipv6.standardFull = [
+      "2001:470:1f13:187:fd34:80c3:a761:ff2/64"
+    ];
+    ipv6.acmeFull = "2001:470:1f13:187:a039:c3ff:fe4f:8661/64";
+    ipv4Full = [ "10.1.1.20/24" ];
+
+    privateRanges = [ "10.1.0.0/22 "];
+  };
+}
diff --git a/machines/core-services-01/secrets/default.nix b/machines/core-services-01/secrets/default.nix
new file mode 100644
index 0000000..4459bf2
--- /dev/null
+++ b/machines/core-services-01/secrets/default.nix
@@ -0,0 +1,5 @@
+{ ... }:
+{
+  age.secrets.keycloakDatabasePasswordFile.file = ./keycloakDatabasePasswordFile.age;
+  age.secrets.oauth2ProxyKeyFile.file = ./oauth2ProxyKeyFile.age;
+}
diff --git a/machines/core-services-01/secrets/keycloakDatabasePasswordFile.age b/machines/core-services-01/secrets/keycloakDatabasePasswordFile.age
new file mode 100644
index 0000000..4a352ab
--- /dev/null
+++ b/machines/core-services-01/secrets/keycloakDatabasePasswordFile.age
@@ -0,0 +1,26 @@
+age-encryption.org/v1
+-> ssh-ed25519 lHr4YQ FHOLoe1idBzwzFB5v1UqrVIgIjmyVMqhC60F+7bsslY
++4jeqlOONU712hstLOOU59dHgx48CB3+Z4xn1faH8Q0
+-> ssh-ed25519 Wu8JLQ hqwTH7IVS1GTep9tNy6vrUUVtPcVXBxDnJj77S+l/Ek
+gmnQhE5wnxQgEhyE18RKKemMQr4ewtRkQRt0bJo8O7Y
+-> ssh-ed25519 cvTB5g bw+GZVk23ok4lgUF86PqTkZOM7BPNY7foMYYMZSEemU
+6BAoCmLYb1oJwPPW3X2AaS3ZOttSxAykOeKIJM/03+k
+-> ssh-ed25519 /vwQcQ Kqg5WdWhAuxCxMgWPpXWk77utvbIbBdcZXNSOF+a938
+4361sLVjBWOoWqTl7sIktNiulSU4gHnD2Q5gjDkZ2po
+-> ssh-ed25519 reTIKw abLB9hwppWQhlkAHx3AiFgePvigajethU03CjTu6SUg
+sueQMp1LPmF4h1EPsyGrSDH6RoXVXoWm1i3OISZlyPw
+-> ssh-ed25519 85WiGg T6amGqzBiF7BLhnhPrz8BCu/NDikWBDnRv+UL2Y8mXs
+xghk5e+D3O4rX4FT4TNu/bowSj7HCn3Wi4E6F7pseiw
+-> ssh-rsa krWCLQ
+KDsZM/5myCVtb7RL9Mo1F2WUKzBPhwillBvrIONZKH0dh3mCMjeVfyYTto1NxKxp
+GsvYltgLbDggo3ittwQedB9s/JXL5z0+f3DroKVJzw82ti6w3SMpvKiCR2x+5DjH
+D4Wzt/CQFujxAMOghKQGlFuCM6nVkpmL9ucgUPEp7ApbNWuc4patJgLpvkE0yj7X
+Q4ScTPg86Oh5RFf4Qwa3QhG7IdnIoSSJxK+rK5qZb2vPST9zc2OKZKQXOh2h6hBy
+tEAhRYBTu6oqprwYlEWL7dCsbBeHjLmBE6Zvovp51PizZhzub1jCh/fuka1VTFSq
+f1oWAdTS3Ow5gXWKoH5TkQ
+-> +_u~Wjak-grease cU8 ?4 8Y(inxl+
+h+7nxip00iflkCYBX2HvbHYc0SjsLvn4WVYUPzhDGjyauwARfA5zCfuIbGnEcxzF
+FOWG9QQzr90JDCkonUjGTJ3N+ykLpiYCvLDJgXZB4MVEONyutwM
+--- dZ6ca/xXQAOh82oeOyV/EkjTzK+oUj0YgzGTqyzJ8Rs
+a™éæOvF·âŒžú‘ÞñÃúÓÊ›
+¤¦ÄÃJF¾»ÈÐßjëjŒ+
\ No newline at end of file
diff --git a/machines/core-services-01/secrets/oauth2ProxyKeyFile.age b/machines/core-services-01/secrets/oauth2ProxyKeyFile.age
new file mode 100644
index 0000000..eb729b2
Binary files /dev/null and b/machines/core-services-01/secrets/oauth2ProxyKeyFile.age differ
diff --git a/machines/core-services-01/secrets/secrets.nix b/machines/core-services-01/secrets/secrets.nix
new file mode 100644
index 0000000..dca2f64
--- /dev/null
+++ b/machines/core-services-01/secrets/secrets.nix
@@ -0,0 +1,13 @@
+let
+  pkgs = import <nixpkgs> {};
+  lib = pkgs.lib;
+  readPubkeys = user: builtins.filter (k: k != "") (lib.splitString "\n" (builtins.readFile (../pubkeys + "/${user}.keys")));
+  superadmins = (readPubkeys "raito") ++ (readPubkeys "gdd");
+  core-services-01 = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILrnZxP4OUGDzd1uykMghzFNLH0Fg42hH+0qxif6O6oU";
+  systems = [ core-services-01 ];
+in
+  {
+    "keycloakDatabasePasswordFile.age".publicKeys = superadmins ++ systems;
+    "oauth2ProxyKeyFile.age".publicKeys = superadmins ++ systems;
+  }
+
diff --git a/machines/core-services-01/subZone.nix b/machines/core-services-01/subZone.nix
new file mode 100644
index 0000000..c9417d9
--- /dev/null
+++ b/machines/core-services-01/subZone.nix
@@ -0,0 +1,56 @@
+{ config, dns, ... }:
+
+with dns.lib.combinators;
+
+let
+  my = config.my;
+  delegateACMEDNSChallenge = acme: { _acme-challenge.CNAME = [ acme ]; };
+in
+with my.ipv6; # contains { standard, acme }
+{
+  SOA = {
+    nameServer = "ns1.${my.subZone}.";
+    adminEmail = my.email;
+    serial = 2021072400; # Y M D Version
+  };
+
+  NS = [
+    "ns1.${my.subZone}."
+  ];
+
+  AAAA = standard;
+
+  CAA = letsEncrypt my.email;
+
+  subdomains = {
+    git.AAAA = standard;
+    wiki.AAAA = standard;
+    monitoring.AAAA = standard;
+    auth.AAAA = standard;
+    push.AAAA = standard;
+    ns1.AAAA = standard;
+
+    # Délégation de sous zone à he.gdd pour la certification HE.
+    gdd.subdomains.he = {
+      NS = [ "ns1.he.gdd.${my.subZone}." ];
+      subdomains.ns1.AAAA = [ "2001:470:1f13:187:b80d:21ff:fe43:f1a5" ];
+    };
+
+    acme = {
+      NS = [ "acme.${my.subZone}." ];
+      AAAA = [ acme ];
+    };
+
+    internal.subdomains = {
+      core01 = {
+        A = [ "10.1.1.20" ];
+      };
+      pve01 = {
+        A = [ "10.1.1.10" ];
+        subdomains = {
+          idrac.A = [ "10.1.2.20" ];
+        } // delegateACMEDNSChallenge "7c663a49-151c-4eea-a34f-725ff9f19d41.acme.rz.ens.wtf.";
+      };
+    };
+  };
+}
diff --git a/machines/core-services-01/system.nix b/machines/core-services-01/system.nix
new file mode 100644
index 0000000..31a6994
--- /dev/null
+++ b/machines/core-services-01/system.nix
@@ -0,0 +1,28 @@
+{ pkgs, ... }:
+{
+  # Auto upgrades
+  system.autoUpgrade = {
+    enable = true;
+    allowReboot = false;
+  };
+
+  # Auto GC and store optimizations
+  nix = {
+    trustedUsers = [ "root" "gab" ];
+    gc = {
+      automatic = true;
+      dates = "weekly";
+      options = "--delete-older-than 90d";
+    };
+    optimise.automatic = true;
+    extraOptions = ''
+      min-free = ${toString (100 * 1024 * 1024)}
+      max-free = ${toString (1024 * 1024 * 1024)}
+    '';
+  };
+
+  services.locate = {
+    enable = true;
+    interval = "04:05";
+  };
+}
diff --git a/machines/core-services-01/vim.nix b/machines/core-services-01/vim.nix
new file mode 100644
index 0000000..bed8752
--- /dev/null
+++ b/machines/core-services-01/vim.nix
@@ -0,0 +1,31 @@
+{ pkgs, ... }:
+{
+  environment.variables = { EDITOR = "vim"; };
+
+  environment.systemPackages = with pkgs; [
+    nixfmt
+    git
+    (neovim.override {
+      vimAlias = true;
+      configure = {
+        packages.myPlugins = with pkgs.vimPlugins; {
+          start = [ vim-lastplace vim-nix ];
+          opt = [];
+        };
+        customRC = ''
+          set encoding=utf-8
+          set wildmenu
+
+          set nocompatible
+          set backspace=indent,eol,start
+          set cursorline
+          hi CursorLine term=bold cterm=bold ctermbg=darkgrey
+          set number
+          set relativenumber
+          set tabstop=4
+          set expandtab
+        '';
+      };
+    }
+  )];
+}