216 lines
6.6 KiB
Nix
216 lines
6.6 KiB
Nix
import ./make-test-python.nix ({ pkgs, lib, ...} :
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let
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common = {
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networking.firewall.enable = false;
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networking.useDHCP = false;
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};
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exampleZone = pkgs.writeTextDir "example.com.zone" ''
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@ SOA ns.example.com. noc.example.com. 2019031301 86400 7200 3600000 172800
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@ NS ns1
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@ NS ns2
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ns1 A 192.168.0.1
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ns1 AAAA fd00::1
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ns2 A 192.168.0.2
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ns2 AAAA fd00::2
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www A 192.0.2.1
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www AAAA 2001:DB8::1
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sub NS ns.example.com.
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'';
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delegatedZone = pkgs.writeTextDir "sub.example.com.zone" ''
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@ SOA ns.example.com. noc.example.com. 2019031301 86400 7200 3600000 172800
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@ NS ns1.example.com.
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@ NS ns2.example.com.
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@ A 192.0.2.2
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@ AAAA 2001:DB8::2
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'';
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knotZonesEnv = pkgs.buildEnv {
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name = "knot-zones";
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paths = [ exampleZone delegatedZone ];
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};
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# DO NOT USE pkgs.writeText IN PRODUCTION. This put secrets in the nix store!
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tsigFile = pkgs.writeText "tsig.conf" ''
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key:
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- id: slave_key
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algorithm: hmac-sha256
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secret: zOYgOgnzx3TGe5J5I/0kxd7gTcxXhLYMEq3Ek3fY37s=
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'';
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in {
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name = "knot";
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meta = with pkgs.lib.maintainers; {
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maintainers = [ hexa ];
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};
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nodes = {
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master = { lib, ... }: {
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imports = [ common ];
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# trigger sched_setaffinity syscall
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virtualisation.cores = 2;
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networking.interfaces.eth1 = {
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ipv4.addresses = lib.mkForce [
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{ address = "192.168.0.1"; prefixLength = 24; }
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];
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ipv6.addresses = lib.mkForce [
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{ address = "fd00::1"; prefixLength = 64; }
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];
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};
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services.knot.enable = true;
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services.knot.extraArgs = [ "-v" ];
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services.knot.keyFiles = [ tsigFile ];
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services.knot.extraConfig = ''
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server:
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listen: 0.0.0.0@53
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listen: ::@53
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acl:
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- id: slave_acl
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address: 192.168.0.2
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key: slave_key
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action: transfer
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remote:
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- id: slave
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address: 192.168.0.2@53
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template:
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- id: default
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storage: ${knotZonesEnv}
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notify: [slave]
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acl: [slave_acl]
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dnssec-signing: on
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# Input-only zone files
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# https://www.knot-dns.cz/docs/2.8/html/operation.html#example-3
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# prevents modification of the zonefiles, since the zonefiles are immutable
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zonefile-sync: -1
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zonefile-load: difference
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journal-content: changes
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# move databases below the state directory, because they need to be writable
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journal-db: /var/lib/knot/journal
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kasp-db: /var/lib/knot/kasp
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timer-db: /var/lib/knot/timer
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zone:
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- domain: example.com
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file: example.com.zone
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- domain: sub.example.com
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file: sub.example.com.zone
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log:
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- target: syslog
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any: info
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'';
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};
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slave = { lib, ... }: {
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imports = [ common ];
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networking.interfaces.eth1 = {
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ipv4.addresses = lib.mkForce [
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{ address = "192.168.0.2"; prefixLength = 24; }
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];
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ipv6.addresses = lib.mkForce [
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{ address = "fd00::2"; prefixLength = 64; }
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];
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};
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services.knot.enable = true;
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services.knot.keyFiles = [ tsigFile ];
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services.knot.extraArgs = [ "-v" ];
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services.knot.extraConfig = ''
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server:
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listen: 0.0.0.0@53
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listen: ::@53
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acl:
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- id: notify_from_master
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address: 192.168.0.1
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action: notify
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remote:
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- id: master
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address: 192.168.0.1@53
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key: slave_key
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template:
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- id: default
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master: master
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acl: [notify_from_master]
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# zonefileless setup
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# https://www.knot-dns.cz/docs/2.8/html/operation.html#example-2
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zonefile-sync: -1
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zonefile-load: none
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journal-content: all
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# move databases below the state directory, because they need to be writable
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journal-db: /var/lib/knot/journal
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kasp-db: /var/lib/knot/kasp
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timer-db: /var/lib/knot/timer
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zone:
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- domain: example.com
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file: example.com.zone
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- domain: sub.example.com
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file: sub.example.com.zone
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log:
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- target: syslog
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any: info
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'';
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};
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client = { lib, nodes, ... }: {
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imports = [ common ];
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networking.interfaces.eth1 = {
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ipv4.addresses = [
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{ address = "192.168.0.3"; prefixLength = 24; }
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];
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ipv6.addresses = [
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{ address = "fd00::3"; prefixLength = 64; }
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];
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};
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environment.systemPackages = [ pkgs.knot-dns ];
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};
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};
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testScript = { nodes, ... }: let
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master4 = (lib.head nodes.master.config.networking.interfaces.eth1.ipv4.addresses).address;
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master6 = (lib.head nodes.master.config.networking.interfaces.eth1.ipv6.addresses).address;
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slave4 = (lib.head nodes.slave.config.networking.interfaces.eth1.ipv4.addresses).address;
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slave6 = (lib.head nodes.slave.config.networking.interfaces.eth1.ipv6.addresses).address;
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in ''
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import re
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start_all()
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client.wait_for_unit("network.target")
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master.wait_for_unit("knot.service")
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slave.wait_for_unit("knot.service")
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def test(host, query_type, query, pattern):
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out = client.succeed(f"khost -t {query_type} {query} {host}").strip()
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client.log(f"{host} replied with: {out}")
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assert re.search(pattern, out), f'Did not match "{pattern}"'
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for host in ("${master4}", "${master6}", "${slave4}", "${slave6}"):
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with subtest(f"Interrogate {host}"):
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test(host, "SOA", "example.com", r"start of authority.*noc\.example\.com\.")
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test(host, "A", "example.com", r"has no [^ ]+ record")
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test(host, "AAAA", "example.com", r"has no [^ ]+ record")
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test(host, "A", "www.example.com", r"address 192.0.2.1$")
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test(host, "AAAA", "www.example.com", r"address 2001:db8::1$")
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test(host, "NS", "sub.example.com", r"nameserver is ns\d\.example\.com.$")
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test(host, "A", "sub.example.com", r"address 192.0.2.2$")
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test(host, "AAAA", "sub.example.com", r"address 2001:db8::2$")
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test(host, "RRSIG", "www.example.com", r"RR set signature is")
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test(host, "DNSKEY", "example.com", r"DNSSEC key is")
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master.log(master.succeed("systemd-analyze security knot.service | grep -v '✓'"))
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'';
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})
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