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nixpkgs/nixos/tests/kea.nix
Silvan Mosberger 4f0dadbf38 treewide: format all inactive Nix files
After final improvements to the official formatter implementation,
this commit now performs the first treewide reformat of Nix files using it.
This is part of the implementation of RFC 166.

Only "inactive" files are reformatted, meaning only files that
aren't being touched by any PR with activity in the past 2 months.
This is to avoid conflicts for PRs that might soon be merged.
Later we can do a full treewide reformat to get the rest,
which should not cause as many conflicts.

A CI check has already been running for some time to ensure that new and
already-formatted files are formatted, so the files being reformatted here
should also stay formatted.

This commit was automatically created and can be verified using

    nix-build a08b3a4d19.tar.gz \
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2024-12-10 20:26:33 +01:00

235 lines
6.7 KiB
Nix

# This test verifies DHCPv4 interaction between a client and a router.
# For successful DHCP allocations a dynamic update request is sent
# towards a nameserver to allocate a name in the lan.nixos.test zone.
# We then verify whether client and router can ping each other, and
# that the nameserver can resolve the clients fqdn to the correct IP
# address.
import ./make-test-python.nix (
{ pkgs, lib, ... }:
{
meta.maintainers = with lib.maintainers; [ hexa ];
name = "kea";
nodes = {
router =
{ config, pkgs, ... }:
{
virtualisation.vlans = [ 1 ];
networking = {
useDHCP = false;
firewall.allowedUDPPorts = [ 67 ];
};
systemd.network = {
enable = true;
networks = {
"01-eth1" = {
name = "eth1";
networkConfig = {
Address = "10.0.0.1/29";
};
};
};
};
services.kea.dhcp4 = {
enable = true;
settings = {
valid-lifetime = 3600;
renew-timer = 900;
rebind-timer = 1800;
lease-database = {
type = "memfile";
persist = true;
name = "/var/lib/kea/dhcp4.leases";
};
control-socket = {
socket-type = "unix";
socket-name = "/run/kea/dhcp4.sock";
};
interfaces-config = {
dhcp-socket-type = "raw";
interfaces = [
"eth1"
];
};
subnet4 = [
{
id = 1;
subnet = "10.0.0.0/29";
pools = [
{
pool = "10.0.0.3 - 10.0.0.3";
}
];
}
];
# Enable communication between dhcp4 and a local dhcp-ddns
# instance.
# https://kea.readthedocs.io/en/kea-2.2.0/arm/dhcp4-srv.html#ddns-for-dhcpv4
dhcp-ddns = {
enable-updates = true;
};
ddns-send-updates = true;
ddns-qualifying-suffix = "lan.nixos.test.";
};
};
services.kea.dhcp-ddns = {
enable = true;
settings = {
forward-ddns = {
# Configure updates of a forward zone named `lan.nixos.test`
# hosted at the nameserver at 10.0.0.2
# https://kea.readthedocs.io/en/kea-2.2.0/arm/ddns.html#adding-forward-dns-servers
ddns-domains = [
{
name = "lan.nixos.test.";
# Use a TSIG key in production!
key-name = "";
dns-servers = [
{
ip-address = "10.0.0.2";
port = 53;
}
];
}
];
};
};
};
services.kea.ctrl-agent = {
enable = true;
settings = {
http-host = "127.0.0.1";
http-port = 8000;
control-sockets.dhcp4 = {
socket-type = "unix";
socket-name = "/run/kea/dhcp4.sock";
};
};
};
services.prometheus.exporters.kea = {
enable = true;
controlSocketPaths = [
"http://127.0.0.1:8000"
];
};
};
nameserver =
{ config, pkgs, ... }:
{
virtualisation.vlans = [ 1 ];
networking = {
useDHCP = false;
firewall.allowedUDPPorts = [ 53 ];
};
systemd.network = {
enable = true;
networks = {
"01-eth1" = {
name = "eth1";
networkConfig = {
Address = "10.0.0.2/29";
};
};
};
};
services.resolved.enable = false;
# Set up an authoritative nameserver, serving the `lan.nixos.test`
# zone and configure an ACL that allows dynamic updates from
# the router's ip address.
# This ACL is likely insufficient for production usage. Please
# use TSIG keys.
services.knot =
let
zone = pkgs.writeTextDir "lan.nixos.test.zone" ''
@ SOA ns.nixos.test nox.nixos.test 0 86400 7200 3600000 172800
@ NS nameserver
nameserver A 10.0.0.3
router A 10.0.0.1
'';
zonesDir = pkgs.buildEnv {
name = "knot-zones";
paths = [ zone ];
};
in
{
enable = true;
extraArgs = [
"-v"
];
settings = {
server.listen = [
"0.0.0.0@53"
];
log.syslog.any = "info";
acl.dhcp_ddns = {
address = "10.0.0.1";
action = "update";
};
template.default = {
storage = zonesDir;
zonefile-sync = "-1";
zonefile-load = "difference-no-serial";
journal-content = "all";
};
zone."lan.nixos.test" = {
file = "lan.nixos.test.zone";
acl = [
"dhcp_ddns"
];
};
};
};
};
client =
{ config, pkgs, ... }:
{
virtualisation.vlans = [ 1 ];
systemd.services.systemd-networkd.environment.SYSTEMD_LOG_LEVEL = "debug";
networking = {
useNetworkd = true;
useDHCP = false;
firewall.enable = false;
interfaces.eth1.useDHCP = true;
};
};
};
testScript =
{ ... }:
''
start_all()
router.wait_for_unit("kea-dhcp4-server.service")
client.wait_for_unit("systemd-networkd-wait-online.service")
client.wait_until_succeeds("ping -c 5 10.0.0.1")
router.wait_until_succeeds("ping -c 5 10.0.0.3")
nameserver.wait_until_succeeds("kdig +short client.lan.nixos.test @10.0.0.2 | grep -q 10.0.0.3")
router.log(router.execute("curl 127.0.0.1:9547")[1])
router.succeed("curl --no-buffer 127.0.0.1:9547 | grep -qE '^kea_dhcp4_addresses_assigned_total.*1.0$'")
'';
}
)