forked from c3d2/nix-config
268 lines
7.5 KiB
Nix
268 lines
7.5 KiB
Nix
# This module defines options for use by all C3D2 machines.
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{ options, config, lib, pkgs, ... }:
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let
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cfg = config.c3d2;
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neighMod = with lib; types.submodule {
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options = {
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addrs = mkOption {
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type = with types; attrsOf str;
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default = { };
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};
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via = mkOption
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{
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type = with types; listOf str;
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default = [ ];
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};
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} // (with builtins; let value = mkOption { type = types.str; }; in
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listToAttrs (map (name: { inherit name value; }) [ "exchpub" "id" "noisepub" "signpub" ]));
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};
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in
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{
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options.c3d2 = with lib;
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with lib.types; {
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acmeEmail = mkOption {
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type = str;
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default = "mail@c3d2.de";
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description = ''
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Admin email address to use for Letsencrypt
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'';
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};
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allUsersCanSshRoot = lib.mkOption {
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type = lib.types.bool;
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default = false;
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description = ''
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Let all people in <literal>c3d2.users</literal>
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login as root for deployment via SSH.
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'';
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};
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isInHq = mkEnableOption "HQ presence (TODO: what is this? association to VLAN 5?)";
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enableMotd = mkOption {
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type = bool;
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default = cfg.isInHq;
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defaultText = literalExample "config.c3d2.isInHq";
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};
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mergeHostsFile = mkOption {
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type = bool;
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default = cfg.isInHq;
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description = ''
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Whether to add <literal>c3d2.hosts</literal> to /etc/hosts.
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'';
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};
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mergeNncpSettings = mkEnableOption ''
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Whether to merge <literal>c3d2.nncp.<…>.nncp</literal>
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into <literal>programs.nncp.settings</literal>.
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'';
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k-ot.enable = mkEnableOption ''
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Add k-ot user to this machine. Anyone with an SSH key listed in
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<literal>c3d2.users</literal> can log in as this user.
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'';
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hq = {
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interface = mkOption {
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type = nullOr str;
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default = null;
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example = "eth0";
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description = ''
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Configure the given interface name with an internal IP address.
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'';
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};
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enableBinaryCache = mkOption {
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type = bool;
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default = cfg.isInHq;
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defaultText = literalExample "config.c3d2.isInHq";
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description = "Whether to enable the local Nix binary cache";
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};
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enableMpdProxy = mkOption {
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type = bool;
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default = false;
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description = "Whether to proxy the local MPD database";
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};
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journalToMqtt = mkOption {
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type = bool;
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default = true;
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};
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};
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hosts =
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mkOption {
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type = attrsOf (submodule {
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options = {
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ether = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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ip4 = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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ip6 = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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publicKey = mkOption {
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type = with types; nullOr str;
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default = null;
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};
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wol = mkOption {
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type = types.bool;
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default = false;
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};
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serial = mkOption {
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type = with types; nullOr str;
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default = null;
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description = ''
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Hardware serial number to help identification when netbooting.
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'';
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};
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};
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});
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};
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nncp = {
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neigh = mkOption {
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type = with types; attrsOf neighMod;
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default = { };
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description = ''
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Attrset of NNCP neighbours for relaying packets.
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User endpoints go in <literal>c3d2.users</literal>.
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'';
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};
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};
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users =
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mkOption {
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type = attrsOf
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(submodule {
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options = {
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sshKeys = mkOption {
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type = with types;
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listOf str;
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default = [ ];
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};
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};
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});
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};
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};
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config =
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let
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adminKeys = (with builtins; lib.lists.flatten (
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map
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(getAttr "sshKeys")
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(attrValues cfg.users)
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));
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in
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{
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networking.hosts = lib.mkIf cfg.mergeHostsFile
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((
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lib.attrsets.mapAttrs' (n: v: { name = v.ip4; value = [ "${n}.c3d2" ]; })
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(lib.attrsets.filterAttrs (n: v: v.ip4 != null) cfg.hosts)
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) // (
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lib.attrsets.mapAttrs' (n: v: { name = v.ip6; value = [ "${n}.c3d2" ]; })
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(lib.attrsets.filterAttrs (n: v: v.ip6 != null) cfg.hosts)
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));
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programs = lib.optionalAttrs (options.programs ? nncp) {
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nncp.settings = lib.optionalAttrs cfg.mergeNncpSettings cfg.nncp;
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};
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users.motd = lib.mkIf cfg.enableMotd (builtins.readFile ./motd);
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users = {
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groups = {
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pulse-access = { };
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};
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users = {
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k-ot = lib.mkIf cfg.k-ot.enable {
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packages = with pkgs; [ screen tmux ];
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createHome = true;
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isNormalUser = true;
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uid = 1000;
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extraGroups = [
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"audio"
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"pulse-access" # required for system wide pulseaudio
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"video"
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"wheel"
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];
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password = "k-otk-ot";
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openssh.authorizedKeys.keys = adminKeys;
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};
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root.openssh.authorizedKeys.keys = lib.mkIf cfg.allUsersCanSshRoot adminKeys;
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};
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};
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services.vector = lib.mkIf config.c3d2.hq.journalToMqtt {
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enable = true;
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journaldAccess = true;
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settings = {
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sources.journal = {
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type = "journald";
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current_boot_only = true;
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};
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sinks.mqtt = {
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inputs = ["journal"];
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type = "mqtt";
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host = "broker.serv.zentralwerk.org";
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# port = 8883;
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user = "SECRET[mqtt.user]";
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password = "SECRET[mqtt.password]";
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client_id = "vector-${config.networking.hostName}";
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encoding.codec = "json";
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topic = "journal/{{ host }}/{{ _SYSTEMD_UNIT }}/{{ PRIORITY }}";
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# tls.enabled = true;
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# tls.ca_file = "/etc/ssl/certs/ca-certificates.crt";
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};
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secret.mqtt =
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let
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catSecrets = with pkgs; writeScript "cat-vector-secrets" ''
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#!${runtimeShell} -e
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echo '{'
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COMMA=n
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for F in $@; do
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if [ $COMMA = y ]; then
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echo ' ,'
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else
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COMMA=y
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fi
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echo ' "'$(basename $F)'": {"value": "'$(cat $F)'", "error": null }'
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done
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echo '}'
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'';
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in {
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type = "exec";
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command = [
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catSecrets
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config.sops.secrets."mqtt/user".path
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config.sops.secrets."mqtt/password".path
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];
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};
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};
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};
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sops.secrets = lib.mkIf config.c3d2.hq.journalToMqtt {
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"mqtt/user" = {
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sopsFile = ../config/mqtt.yaml;
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owner = config.systemd.services.vector.serviceConfig.User;
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};
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"mqtt/password" = {
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sopsFile = ../config/mqtt.yaml;
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owner = config.systemd.services.vector.serviceConfig.User;
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};
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};
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};
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}
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