21f183a3fe
The resolver is mainly useful for the ACME server, and acme.nix uses its own DNS server to test DNS-01 challenges.
135 lines
4.1 KiB
Nix
135 lines
4.1 KiB
Nix
# The certificate for the ACME service is exported as:
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#
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# config.test-support.acme.caCert
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#
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# This value can be used inside the configuration of other test nodes to inject
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# the snakeoil certificate into security.pki.certificateFiles or into package
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# overlays.
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#
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# Another value that's needed if you don't use a custom resolver (see below for
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# notes on that) is to add the acme node as a nameserver to every node
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# that needs to acquire certificates using ACME, because otherwise the API host
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# for acme.test can't be resolved.
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#
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# A configuration example of a full node setup using this would be this:
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#
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# {
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# acme = import ./common/acme/server;
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#
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# example = { nodes, ... }: {
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# networking.nameservers = [
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# nodes.acme.config.networking.primaryIPAddress
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# ];
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# security.pki.certificateFiles = [
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# nodes.acme.config.test-support.acme.caCert
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# ];
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# };
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# }
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#
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# By default, this module runs a local resolver, generated using resolver.nix
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# from the parent directory to automatically discover all zones in the network.
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#
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# If you do not want this and want to use your own resolver, you can just
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# override networking.nameservers like this:
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#
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# {
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# acme = { nodes, lib, ... }: {
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# imports = [ ./common/acme/server ];
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# networking.nameservers = lib.mkForce [
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# nodes.myresolver.config.networking.primaryIPAddress
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# ];
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# };
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#
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# myresolver = ...;
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# }
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#
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# Keep in mind, that currently only _one_ resolver is supported, if you have
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# more than one resolver in networking.nameservers only the first one will be
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# used.
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#
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# Also make sure that whenever you use a resolver from a different test node
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# that it has to be started _before_ the ACME service.
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{ config, pkgs, lib, ... }:
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let
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snakeOilCerts = import ./snakeoil-certs.nix;
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wfeDomain = "acme.test";
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wfeCertFile = snakeOilCerts.${wfeDomain}.cert;
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wfeKeyFile = snakeOilCerts.${wfeDomain}.key;
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siteDomain = "acme.test";
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siteCertFile = snakeOilCerts.${siteDomain}.cert;
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siteKeyFile = snakeOilCerts.${siteDomain}.key;
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pebble = pkgs.pebble;
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resolver = let
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message = "You need to define a resolver for the acme test module.";
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firstNS = lib.head config.networking.nameservers;
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in if config.networking.nameservers == [] then throw message else firstNS;
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pebbleConf.pebble = {
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listenAddress = "0.0.0.0:443";
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managementListenAddress = "0.0.0.0:15000";
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certificate = snakeOilCerts.${wfeDomain}.cert;
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privateKey = snakeOilCerts.${wfeDomain}.key;
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httpPort = 80;
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tlsPort = 443;
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ocspResponderURL = "http://0.0.0.0:4002";
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strict = true;
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};
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pebbleConfFile = pkgs.writeText "pebble.conf" (builtins.toJSON pebbleConf);
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pebbleDataDir = "/root/pebble";
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in {
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imports = [ ../../resolver.nix ];
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options.test-support.acme.caCert = lib.mkOption {
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type = lib.types.path;
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description = ''
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A certificate file to use with the <literal>nodes</literal> attribute to
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inject the snakeoil CA certificate used in the ACME server into
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<option>security.pki.certificateFiles</option>.
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'';
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};
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config = {
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test-support = {
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resolver.enable = let
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isLocalResolver = config.networking.nameservers == [ "127.0.0.1" ];
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in lib.mkOverride 900 isLocalResolver;
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acme.caCert = snakeOilCerts.ca.cert;
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};
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# This has priority 140, because modules/testing/test-instrumentation.nix
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# already overrides this with priority 150.
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networking.nameservers = lib.mkOverride 140 [ "127.0.0.1" ];
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networking.firewall.enable = false;
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networking.extraHosts = ''
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127.0.0.1 ${wfeDomain}
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${config.networking.primaryIPAddress} ${wfeDomain} ${siteDomain}
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'';
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systemd.services = {
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pebble = {
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enable = true;
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description = "Pebble ACME server";
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requires = [ ];
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wantedBy = [ "network.target" ];
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preStart = ''
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mkdir ${pebbleDataDir}
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'';
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script = ''
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cd ${pebbleDataDir}
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${pebble}/bin/pebble -config ${pebbleConfFile}
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'';
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serviceConfig = {
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# Required to bind on privileged ports.
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AmbientCapabilities = [ "CAP_NET_BIND_SERVICE" ];
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};
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};
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};
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};
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}
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