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change networking config structuring

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This commit is contained in:
Pim Kunis 2024-01-31 21:58:23 +01:00
parent c58d6c89b3
commit 929d20a7d6
12 changed files with 264 additions and 241 deletions
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30
nixos/lab.nix
View file

@ -1,14 +1,24 @@
{
lab.networking = {
publicIPv4 = "192.145.57.90";
publicRouterIPv6 = "2a0d:6e00:1a77::1";
dockerSwarmIPv4 = "192.168.30.8";
dockerSwarmIPv6 = "2a0d:6e00:1a77:30:c8fe:c0ff:feff:ee08";
dmzRouterIPv4 = "192.168.30.1";
dmzRouterIPv6 = "2a0d:6e00:1a77:30::1";
dmzServicesIPv4 = "192.168.30.7";
dmzServicesIPv6 = "2a0d:6e00:1a77:30::7";
dmzIPv4PrefixLength = "24";
dmzIPv6PrefixLength = "64";
public = {
ipv4.router = "192.145.57.90";
ipv6.router = "2a0d:6e00:1a77::1";
};
dmz = {
ipv4 = {
prefixLength = "24";
dockerSwarm = "192.168.30.8";
router = "192.168.30.1";
services = "192.168.30.7";
};
ipv6 = {
prefixLength = "64";
dockerSwarm = "2a0d:6e00:1a77:30:c8fe:c0ff:feff:ee08";
router = "2a0d:6e00:1a77:30::1";
services = "2a0d:6e00:1a77:30::7";
};
};
};
}

6
nixos/machines/default.nix
View file

@ -77,13 +77,13 @@
nixosModule = { config, ... }: {
lab = {
networking.dmzServices.enable = true;
networking.dmz.services.enable = true;
vm = {
macAddress = "BA:DB:EE:F0:00:07";
staticNetworking = true;
staticIPv4 = config.lab.networking.dmzServicesIPv4;
staticIPv6 = config.lab.networking.dmzServicesIPv6;
staticIPv4 = config.lab.networking.dmz.ipv4.services;
staticIPv6 = config.lab.networking.dmz.ipv6.services;
};
};
};

4
nixos/modules/data-sharing.nix
View file

@ -19,7 +19,7 @@ let
nfsExports = lib.strings.concatLines (
builtins.map
(share:
"${cfg.nfsRoot}${share} 192.168.30.0/${config.lab.networking.dmzIPv4PrefixLength}(rw,sync,no_subtree_check,no_root_squash)"
"${cfg.nfsRoot}${share} 192.168.30.0/${config.lab.networking.dmz.ipv4.prefixLength}(rw,sync,no_subtree_check,no_root_squash)"
)
nfsShares
);
@ -52,7 +52,7 @@ in
};
config = lib.mkIf cfg.enable {
networking.firewall.interfaces.${config.lab.networking.dmzBridgeName}.allowedTCPPorts = [
networking.firewall.interfaces.${config.lab.networking.dmz.bridgeName}.allowedTCPPorts = [
2049 # NFS
5432 # PostgeSQL
111 # NFS

4
nixos/modules/default.nix
View file

@ -11,8 +11,10 @@ in
./backups.nix
./networking
./data-sharing.nix
./globals.nix
];
# TODO: remove this option; make this explicit on the host.
options.lab.dataHost.enable = lib.mkOption {
default = false;
type = lib.types.bool;
@ -26,6 +28,6 @@ in
config.lab = lib.mkIf cfg.dataHost.enable {
backups.enable = true;
data-sharing.enable = true;
networking.allowDMZConnectivity = true;
networking.dmz.allowConnectivity = true;
};
}

89
nixos/modules/globals.nix Normal file
View file

@ -0,0 +1,89 @@
{ lib, ... }: {
options.lab = {
networking = {
public = {
ipv4 = {
router = lib.mkOption {
type = lib.types.str;
description = ''
Public IPv4 address of the router.
'';
};
};
ipv6 = {
router = lib.mkOption {
type = lib.types.str;
description = ''
Publicly routable IPv6 address of the router.
'';
};
};
};
dmz = {
ipv4 = {
prefixLength = lib.mkOption {
type = lib.types.str;
description = ''
IPv4 prefix length of DMZ network.
'';
};
dockerSwarm = lib.mkOption {
type = lib.types.str;
description = ''
IPv4 address of the Docker Swarm in the DMZ.
'';
};
router = lib.mkOption {
type = lib.types.str;
description = ''
The router's IPv4 address on the DMZ network.
'';
};
services = lib.mkOption {
type = lib.types.str;
description = ''
The IPv4 address of the interface serving DHCP and DNS on the DMZ network.
'';
};
};
ipv6 = {
prefixLength = lib.mkOption {
type = lib.types.str;
description = ''
IPv6 prefix length of DMZ network.
'';
};
dockerSwarm = lib.mkOption {
type = lib.types.str;
description = ''
Globally routable IPv6 address of the Docker Swarm.
'';
};
router = lib.mkOption {
type = lib.types.str;
description = ''
The router's IPv6 address on the DMZ network.
'';
};
services = lib.mkOption {
type = lib.types.str;
description = ''
The IPv6 address of the interface serving DHCP and DNS on the DMZ network.
'';
};
};
};
};
};
}

114
nixos/modules/networking/default.nix
View file

@ -1,10 +1,11 @@
{ lib, config, machine, ... }:
let cfg = config.lab.networking;
in {
imports = [ ./dmz ];
imports = [ ./dmz_services ];
options.lab.networking = {
allowDMZConnectivity = lib.mkOption {
dmz = {
allowConnectivity = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
@ -12,85 +13,14 @@ in {
'';
};
staticDMZIPv4Address = lib.mkOption {
default = "";
type = lib.types.str;
description = ''
Assign a static IPv4 address on the DMZ interface.
'';
};
staticDMZIPv6Address = lib.mkOption {
default = "";
type = lib.types.str;
description = ''
Assign a static IPv6 address on the DMZ interface.
'';
};
publicIPv4 = lib.mkOption {
type = lib.types.str;
description = ''
Public IPv4 address of our home.
'';
};
publicRouterIPv6 = lib.mkOption {
type = lib.types.str;
description = ''
Publicly routable IPv6 address of the router.
'';
};
dockerSwarmIPv4 = lib.mkOption {
type = lib.types.str;
description = ''
Internal IPv4 address of the Docker Swarm.
'';
};
dockerSwarmIPv6 = lib.mkOption {
type = lib.types.str;
description = ''
Globally routable IPv6 address of the Docker Swarm.
'';
};
dmzRouterIPv4 = lib.mkOption {
type = lib.types.str;
description = ''
The router's IPv4 address on the DMZ network.
'';
};
dmzRouterIPv6 = lib.mkOption {
type = lib.types.str;
description = ''
The router's IPv6 address on the DMZ network.
'';
};
dmzServicesIPv4 = lib.mkOption {
type = lib.types.str;
description = ''
The IPv4 address of the interface serving DHCP and DNS on the DMZ network.
'';
};
dmzServicesIPv6 = lib.mkOption {
type = lib.types.str;
description = ''
The IPv6 address of the interface serving DHCP and DNS on the DMZ network.
'';
};
dmzBridgeName = lib.mkOption {
bridgeName = lib.mkOption {
default = "bridgedmz";
type = lib.types.str;
description = ''
The name of the DMZ bridge.
'';
};
};
mainNicNamePattern = lib.mkOption {
default = "en*";
@ -99,30 +29,16 @@ in {
Pattern to match the name of this machine's main NIC.
'';
};
dmzIPv4PrefixLength = lib.mkOption {
type = lib.types.str;
description = ''
IPv4 prefix length of DMZ network.
'';
};
dmzIPv6PrefixLength = lib.mkOption {
type = lib.types.str;
description = ''
IPv6 prefix length of DMZ network.
'';
};
};
config = {
networking = {
domain = if machine.type == "physical" then "hyp" else "dmz";
nftables.enable = false;
nftables.enable = true;
useDHCP = false;
firewall = {
enable = false;
enable = true;
checkReversePath = false;
};
};
@ -143,7 +59,7 @@ in {
"20-bridgedmz" = {
netdevConfig = {
Kind = "bridge";
Name = cfg.dmzBridgeName;
Name = cfg.dmz.bridgeName;
};
};
};
@ -165,26 +81,24 @@ in {
networkConfig = {
IPv6AcceptRA = false;
LinkLocalAddressing = "no";
Bridge = cfg.dmzBridgeName;
Bridge = cfg.dmz.bridgeName;
};
};
"40-bridgedmz" = {
matchConfig.Name = cfg.dmzBridgeName;
matchConfig.Name = cfg.dmz.bridgeName;
linkConfig.RequiredForOnline = "carrier";
networkConfig = {
IPv6AcceptRA = cfg.allowDMZConnectivity;
LinkLocalAddressing = if cfg.allowDMZConnectivity then "ipv6" else "no";
DHCP = lib.mkIf (cfg.allowDMZConnectivity && cfg.staticDMZIPv4Address == "") "yes";
Address = lib.lists.optional (cfg.staticDMZIPv4Address != "") cfg.staticDMZIPv4Address
++ lib.lists.optional (cfg.staticDMZIPv6Address != "") cfg.staticDMZIPv6Address;
IPv6AcceptRA = cfg.dmz.allowConnectivity;
LinkLocalAddressing = if cfg.dmz.allowConnectivity then "ipv6" else "no";
DHCP = "yes";
};
};
"40-vms" = {
matchConfig.Name = "vm-*";
networkConfig.Bridge = cfg.dmzBridgeName;
networkConfig.Bridge = cfg.dmz.bridgeName;
};
};
};

50
nixos/modules/networking/dmz/dnsmasq.nix
View file

@ -1,50 +0,0 @@
{ config, ... }:
let
inherit (config.lab.networking) publicIPv4 dockerSwarmIPv4 dmzServicesIPv4 dmzServicesIPv6 dmzRouterIPv4;
in
{
no-resolv = true;
local = "/dmz/";
dhcp-fqdn = true;
no-hosts = true;
expand-hosts = true;
domain = "dmz";
dhcp-authoritative = true;
ra-param = "*,0,0";
alias = "${publicIPv4},${dockerSwarmIPv4}";
log-dhcp = true;
log-queries = true;
port = "5353";
host-record = [
"hermes.dmz,${dmzServicesIPv4},${dmzServicesIPv6}"
"ipv4.hermes.dmz,${dmzServicesIPv4}"
"ipv6.hermes.dmz,${dmzServicesIPv6}"
];
server = [
dmzRouterIPv4
"/geokunis2.nl/${dmzServicesIPv4}"
"/kun.is/${dmzServicesIPv4}"
];
dhcp-range = [
"192.168.30.50,192.168.30.127,15m"
"2a0d:6e00:1a77:30::,ra-stateless,ra-names"
];
dhcp-host = [
"b8:27:eb:b9:ab:e2,esrom"
"ca:fe:c0:ff:ee:08,maestro,${dockerSwarmIPv4}"
];
dhcp-option = [
"3,${dmzRouterIPv4}"
"option:dns-server,${dmzRouterIPv4}"
"option6:dns-server,[2a02:58:19a:30::1]"
];
address = [
"/ns.pizzapim.nl/ns.geokunis2.nl/${dmzServicesIPv4}"
"/ns.pizzapim.nl/ns.geokunis2.nl/${dmzServicesIPv6}"
];
}

10
nixos/modules/networking/dmz/default.nix → nixos/modules/networking/dmz_services/default.nix
View file

@ -1,6 +1,9 @@
# TODO: we should split this into DHCP and DNS
# This decoupling makes it easier to put one service on another host.
{ pkgs, lib, config, dns, ... }@inputs:
let
cfg = config.lab.networking.dmzServices;
cfg = config.lab.networking.dmz.services;
kunisZoneFile = pkgs.writeTextFile {
name = "kunis-zone-file";
text = (dns.lib.toString "kun.is" (import ./zones/kun.is.nix inputs));
@ -12,7 +15,7 @@ let
};
in
{
options.lab.networking.dmzServices.enable = lib.mkOption {
options.lab.networking.dmz.services.enable = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
@ -21,7 +24,8 @@ in
};
config = lib.mkIf cfg.enable {
lab.networking.allowDMZConnectivity = true;
# TODO Remove this; make this explicit in the machine config.
lab.networking.dmz.allowConnectivity = true;
# TODO: listen only on dmz interface, make this portable between physical and VM.
networking.firewall = {

50
nixos/modules/networking/dmz_services/dnsmasq.nix Normal file
View file

@ -0,0 +1,50 @@
{ config, ... }:
let
cfg = config.lab.networking;
in
{
no-resolv = true;
local = "/dmz/";
dhcp-fqdn = true;
no-hosts = true;
expand-hosts = true;
domain = "dmz";
dhcp-authoritative = true;
ra-param = "*,0,0";
alias = "${cfg.public.ipv4.router},${cfg.dmz.ipv4.dockerSwarm}";
log-dhcp = true;
log-queries = true;
port = "5353";
host-record = [
"hermes.dmz,${cfg.dmz.ipv4.services},${cfg.dmz.ipv6.services}"
"ipv4.hermes.dmz,${cfg.dmz.ipv4.services}"
"ipv6.hermes.dmz,${cfg.dmz.ipv6.services}"
];
server = [
cfg.dmz.ipv4.router
"/geokunis2.nl/${cfg.dmz.ipv4.services}"
"/kun.is/${cfg.dmz.ipv4.services}"
];
dhcp-range = [
"192.168.30.50,192.168.30.127,15m"
"2a0d:6e00:1a77:30::,ra-stateless,ra-names"
];
dhcp-host = [
"b8:27:eb:b9:ab:e2,esrom"
"ca:fe:c0:ff:ee:08,maestro,${cfg.dmz.ipv4.dockerSwarm}"
];
dhcp-option = [
"3,${cfg.dmz.ipv4.router}"
"option:dns-server,${cfg.dmz.ipv4.router}"
"option6:dns-server,[2a02:58:19a:30::1]"
];
address = [
"/ns.pizzapim.nl/ns.geokunis2.nl/${cfg.dmz.ipv4.services}"
"/ns.pizzapim.nl/ns.geokunis2.nl/${cfg.dmz.ipv6.services}"
];
}

32
nixos/modules/networking/dmz/zones/geokunis2.nl.nix → nixos/modules/networking/dmz_services/zones/geokunis2.nl.nix
View file

@ -1,7 +1,7 @@
{ config, dns, ... }:
with dns.lib.combinators;
let
inherit (config.lab.networking) publicIPv4 dmzServicesIPv6 dockerSwarmIPv6 publicRouterIPv6;
cfg = config.lab.networking;
in
{
SOA = {
@ -19,50 +19,50 @@ in
MX = [ (mx.mx 10 "mail.geokunis2.nl.") ];
A = [ publicIPv4 ];
AAAA = [ dockerSwarmIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.dockerSwarm ];
CAA = letsEncrypt "caa@geokunis2.nl";
subdomains = {
"*" = {
A = [ publicIPv4 ];
AAAA = [ dockerSwarmIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.dockerSwarm ];
};
ns = {
A = [ publicIPv4 ];
AAAA = [ dmzServicesIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.services ];
};
ns1 = {
A = [ publicIPv4 ];
AAAA = [ dmzServicesIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.services ];
};
ns2 = {
A = [ publicIPv4 ];
AAAA = [ dmzServicesIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.services ];
};
# Override because we don't support IPv6 for KMS.
kms = {
A = [ publicIPv4 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ ];
};
wg = {
A = [ publicIPv4 ];
AAAA = [ publicRouterIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.public.ipv6.router ];
};
wg4 = {
A = [ publicIPv4 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ ];
};
wg6 = {
A = [ ];
AAAA = [ publicRouterIPv6 ];
AAAA = [ cfg.public.ipv6.router ];
};
};
}

28
nixos/modules/networking/dmz/zones/kun.is.nix → nixos/modules/networking/dmz_services/zones/kun.is.nix
View file

@ -1,7 +1,7 @@
{ config, dns, ... }:
with dns.lib.combinators;
let
inherit (config.lab.networking) publicIPv4 dmzServicesIPv6 dockerSwarmIPv6 publicRouterIPv6;
cfg = config.lab.networking;
in
{
CAA = letsEncrypt "caa@kun.is";
@ -23,41 +23,41 @@ in
subdomains = {
"*" = {
A = [ publicIPv4 ];
AAAA = [ dockerSwarmIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.dockerSwarm ];
};
ns = {
A = [ publicIPv4 ];
AAAA = [ dmzServicesIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.services ];
};
ns1 = {
A = [ publicIPv4 ];
AAAA = [ dmzServicesIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.services ];
};
ns2 = {
A = [ publicIPv4 ];
AAAA = [ dmzServicesIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.services ];
};
# Override because we don't support IPv6 for Git SSH.
git = {
A = [ publicIPv4 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ ];
};
# Override because we don't support IPv6 for KMS.
kms = {
A = [ publicIPv4 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ ];
};
# Override because wg is on opnsense so ipv6 differs from "dmzServicesIPv6"
# Override because wg is on opnsense so ipv6 differs from "cfg.dmz.ipv6.services"
wg = {
A = [ publicIPv4 ];
AAAA = [ publicRouterIPv6 ];
A = [ cfg.public.ipv4.router ];
AAAA = [ cfg.dmz.ipv6.router ];
};
};

18
nixos/virtual.nix
View file

@ -51,7 +51,11 @@
networking.useDHCP = false;
systemd.network = {
systemd.network =
let
cfg = config.lab.networking;
in
{
enable = true;
networks = {
@ -63,26 +67,26 @@
DHCP = lib.mkIf (! config.lab.vm.staticNetworking) "yes";
Address = lib.mkIf config.lab.vm.staticNetworking [
"${config.lab.vm.staticIPv4}/${config.lab.networking.dmzIPv4PrefixLength}"
"${config.lab.vm.staticIPv6}/${config.lab.networking.dmzIPv6PrefixLength}"
"${ config.lab.vm.staticIPv4}/${cfg.dmz.ipv4.prefixLength}"
"${config.lab.vm.staticIPv6}/${cfg.dmz.ipv6.prefixLength}"
];
DNS = lib.mkIf config.lab.vm.staticNetworking [
config.lab.networking.dmzRouterIPv4
config.lab.networking.dmzRouterIPv6
cfg.dmz.ipv4.router
cfg.dmz.ipv6.router
];
};
routes = lib.mkIf config.lab.vm.staticNetworking [
{
routeConfig = {
Gateway = config.lab.networking.dmzRouterIPv4;
Gateway = cfg.dmz.ipv4.router;
Destination = "0.0.0.0/0";
};
}
{
routeConfig = {
Gateway = config.lab.networking.dmzRouterIPv6;
Gateway = cfg.dmz.ipv6.router;
Destination = "::/0";
};
}