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nixpkgs/nixos/tests/wireguard/dynamic-refresh.nix
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2025-10-09 14:15:47 +02:00

108 lines
2.8 KiB
Nix

{
lib,
kernelPackages ? null,
useNetworkd ? false,
...
}:
let
wg-snakeoil-keys = import ./snakeoil-keys.nix;
in
{
name = "wireguard-dynamic-refresh";
meta.maintainers = with lib.maintainers; [ majiir ];
nodes = {
server =
{ lib, pkgs, ... }:
{
virtualisation.vlans = [
1
2
];
boot.kernelPackages = lib.mkIf (kernelPackages != null) (kernelPackages pkgs);
networking.firewall.allowedUDPPorts = [ 23542 ];
networking.useDHCP = false;
networking.wireguard.useNetworkd = useNetworkd;
networking.wireguard.interfaces.wg0 = {
ips = [ "10.23.42.1/32" ];
listenPort = 23542;
# !!! Don't do this with real keys. The /nix store is world-readable!
privateKeyFile = toString (pkgs.writeText "privateKey" wg-snakeoil-keys.peer0.privateKey);
peers = lib.singleton {
allowedIPs = [ "10.23.42.2/32" ];
inherit (wg-snakeoil-keys.peer1) publicKey;
};
};
};
client =
{
nodes,
lib,
pkgs,
...
}:
{
virtualisation.vlans = [
1
2
];
boot.kernelPackages = lib.mkIf (kernelPackages != null) (kernelPackages pkgs);
networking.useDHCP = false;
networking.wireguard.useNetworkd = useNetworkd;
networking.wireguard.interfaces.wg0 = {
ips = [ "10.23.42.2/32" ];
# !!! Don't do this with real keys. The /nix store is world-readable!
privateKeyFile = toString (pkgs.writeText "privateKey" wg-snakeoil-keys.peer1.privateKey);
dynamicEndpointRefreshSeconds = 2;
peers = lib.singleton {
allowedIPs = [
"0.0.0.0/0"
"::/0"
];
endpoint = "server:23542";
inherit (wg-snakeoil-keys.peer0) publicKey;
};
};
specialisation.update-hosts.configuration = {
networking.extraHosts =
let
testCfg = nodes.server.virtualisation.test;
in
lib.mkForce "192.168.2.${toString testCfg.nodeNumber} ${testCfg.nodeName}";
};
};
};
testScript =
{ nodes, ... }:
''
start_all()
server.systemctl("start network-online.target")
server.wait_for_unit("network-online.target")
client.systemctl("start network-online.target")
client.wait_for_unit("network-online.target")
client.succeed("ping -n -w 1 -c 1 10.23.42.1")
client.succeed("ip link set down eth1")
client.fail("ping -n -w 1 -c 1 10.23.42.1")
with client.nested("update hosts file"):
client.succeed("${nodes.client.system.build.toplevel}/specialisation/update-hosts/bin/switch-to-configuration test")
client.succeed("sleep 5 && ping -n -w 1 -c 1 10.23.42.1")
'';
}