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|
{ pkgs, lib, ... }:
{
name = "systemd-resolved";
meta.maintainers = [ lib.maintainers.elvishjerricco ];
nodes.server =
{ lib, config, ... }:
let
exampleZone = pkgs.writeTextDir "example.com.zone" ''
@ SOA ns.example.com. noc.example.com. 2019031301 86400 7200 3600000 172800
@ A ${(lib.head config.networking.interfaces.eth1.ipv4.addresses).address}
@ AAAA ${(lib.head config.networking.interfaces.eth1.ipv6.addresses).address}
'';
in
{
networking.firewall.enable = false;
networking.useDHCP = false;
networking.interfaces.eth1.ipv6.addresses = lib.mkForce [
{
address = "fd00::1";
prefixLength = 64;
}
];
services.knot = {
enable = true;
settings = {
server.listen = [
"0.0.0.0@53"
"::@53"
];
template.default.storage = exampleZone;
zone."example.com".file = "example.com.zone";
};
};
};
nodes.delegate_server =
{ lib, config, ... }:
let
delegateZone = pkgs.writeTextDir "delegated.example.org.zone" ''
@ SOA ns.delegated.example.org. noc.delegated.example.org. 2019031301 86400 7200 3600000 172800
test A ${(lib.head config.networking.interfaces.eth1.ipv4.addresses).address}
test AAAA ${(lib.head config.networking.interfaces.eth1.ipv6.addresses).address}
'';
in
{
networking.firewall.enable = false;
networking.useDHCP = false;
networking.interfaces.eth1.ipv6.addresses = lib.mkForce [
{
address = "fd00::3";
prefixLength = 64;
}
];
services.knot = {
enable = true;
settings = {
server.listen = [
"0.0.0.0@53"
"::@53"
];
template.default.storage = delegateZone;
zone."delegated.example.org".file = "delegated.example.org.zone";
};
};
};
nodes.client =
{ nodes, ... }:
let
serverAddress = (lib.head nodes.server.networking.interfaces.eth1.ipv4.addresses).address;
delegateAddress =
(lib.head nodes.delegate_server.networking.interfaces.eth1.ipv4.addresses).address;
in
{
networking.nameservers = [ serverAddress ];
networking.interfaces.eth1.ipv6.addresses = lib.mkForce [
{
address = "fd00::2";
prefixLength = 64;
}
];
services.resolved.enable = true;
services.resolved.settings.Resolve.FallbackDNS = [ ];
services.resolved.dnsDelegates.example-org = {
Delegate = {
DNS = delegateAddress;
Domains = [ "delegated.example.org" ];
};
};
networking.useNetworkd = true;
networking.useDHCP = false;
systemd.network.networks."40-eth0".enable = false;
testing.initrdBackdoor = true;
boot.initrd = {
systemd.enable = true;
systemd.initrdBin = [ pkgs.iputils ];
network.enable = true;
services.resolved.enable = true;
};
};
testScript =
{ nodes, ... }:
let
address4 = (lib.head nodes.server.networking.interfaces.eth1.ipv4.addresses).address;
address6 = (lib.head nodes.server.networking.interfaces.eth1.ipv6.addresses).address;
delegateAddress4 =
(lib.head nodes.delegate_server.networking.interfaces.eth1.ipv4.addresses).address;
delegateAddress6 =
(lib.head nodes.delegate_server.networking.interfaces.eth1.ipv6.addresses).address;
in
#python
''
start_all()
server.wait_for_unit("multi-user.target")
delegate_server.wait_for_unit("multi-user.target")
def test_resolve(domain, expected_addrs):
query = client.succeed(f"resolvectl query {domain}")
for addr in expected_addrs:
assert addr in query, f"Expected {addr} in: {query}"
client.succeed(f"ping -4 -c 1 {domain}")
client.succeed(f"ping -6 -c 1 {domain}")
with subtest("resolve in initrd"):
client.wait_for_unit("initrd.target")
test_resolve("example.com", ["${address4}", "${address6}"])
client.switch_root()
with subtest("resolve after switch-root"):
client.wait_for_unit("multi-user.target")
test_resolve("example.com", ["${address4}", "${address6}"])
with subtest("dns-delegate resolves delegated subdomain"):
test_resolve("test.delegated.example.org", ["${delegateAddress4}", "${delegateAddress6}"])
'';
}
|
