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depot/ops/nixos/lib/blade-router.nix
Luke Granger-Brown d1b8449d76 ops/nixos/blade-router: don't export routes to LINX collector 
It confuses some other people on LINX, so for the avoidance of arguments let's Just Not.
2022-07-15 12:03:37 +01:00

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# SPDX-FileCopyrightText: 2020 Luke Granger-Brown <depot@lukegb.com>
#
# SPDX-License-Identifier: Apache-2.0
{ lib, config, pkgs, ... }:
with lib;
let
cfg = config.my.blade-router;
in
{
imports = [
../lib/bgp.nix
];
options.my.blade-router = {
addresses.linknet.v4 = {
local = mkOption { type = types.str; };
remote = mkOption { type = types.str; };
prefixLength = mkOption { type = types.int; default = 31; };
};
addresses.linknet.v6 = {
local = mkOption { type = types.str; };
remote = mkOption { type = types.str; };
prefixLength = mkOption { type = types.int; default = 126; };
};
addresses.br-public.v4 = {
addr = mkOption { type = types.str; };
prefixLength = mkOption { type = types.int; default = 24; };
};
addresses.br-public.v6 = {
addr = mkOption { type = types.str; };
prefixLength = mkOption { type = types.int; default = 48; };
};
addresses.br-public-vip.v4 = {
addr = mkOption { type = types.str; default = "92.118.28.1"; };
prefixLength = mkOption { type = types.int; default = 24; };
};
addresses.br-public-vip.v6 = {
addr = mkOption { type = types.str; default = "2a09:a441::1"; };
prefixLength = mkOption { type = types.int; default = 48; };
};
addresses.br-public-vip.v6-ll = {
addr = mkOption { type = types.str; default = "fe80::f00f"; };
prefixLength = mkOption { type = types.int; default = 64; };
};
addresses.br-public-radvd-prefix = {
addr = mkOption { type = types.str; default = "2a09:a441:0:ffff::"; };
prefixLength = mkOption { type = types.int; default = 64; };
};
linx.enable = mkEnableOption "linx";
addresses.vl-linx.v4 = {
addr = mkOption { type = types.str; default = "195.66.224.58"; };
prefixLength = mkOption { type = types.int; default = 21; };
};
addresses.vl-linx.v6 = {
addr = mkOption { type = types.str; default = "2001:7f8:4::3:22a7:1"; };
prefixLength = mkOption { type = types.int; default = 64; };
};
vrrp.priority = mkOption { type = types.int; };
};
config = {
boot.kernel.sysctl = {
"net.ipv4.ip_forward" = 1;
"net.ipv6.conf.all.forwarding" = 1;
"net.ipv4.conf.vl-linx.arp_announce" = 1;
"net.ipv4.conf.vl-linx.arp_ignore" = 1;
"net.ipv4.neigh.vl-linx.base_reachable_time_ms" = 14400000;
"net.ipv6.neigh.vl-linx.base_reachable_time_ms" = 14400000;
};
networking = {
vlans.vl-transit = {
id = 100;
interface = "en-internet";
};
vlans.vl-linx = {
id = 200;
interface = "en-internet";
};
interfaces.br-public.ipv4.addresses = [{
address = config.my.blade-router.addresses.br-public.v4.addr;
prefixLength = config.my.blade-router.addresses.br-public.v4.prefixLength;
}];
interfaces.br-public.ipv6.addresses = [{
address = config.my.blade-router.addresses.br-public.v6.addr;
prefixLength = config.my.blade-router.addresses.br-public.v6.prefixLength;
}];
interfaces.vl-transit.ipv4.addresses = [{
address = config.my.blade-router.addresses.linknet.v4.local;
prefixLength = config.my.blade-router.addresses.linknet.v4.prefixLength;
}];
interfaces.vl-transit.ipv6.addresses = [{
address = config.my.blade-router.addresses.linknet.v6.local;
prefixLength = config.my.blade-router.addresses.linknet.v6.prefixLength;
}];
interfaces.vl-linx.macAddress = "e4:11:5b:ac:e4:00";
interfaces.vl-linx.ipv4.addresses = [{
address = cfg.addresses.vl-linx.v4.addr;
prefixLength = cfg.addresses.vl-linx.v4.prefixLength;
}];
interfaces.vl-linx.ipv6.addresses = [{
address = cfg.addresses.vl-linx.v6.addr;
prefixLength = cfg.addresses.vl-linx.v6.prefixLength;
}];
defaultGateway = config.my.blade-router.addresses.linknet.v4.remote;
defaultGateway6 = config.my.blade-router.addresses.linknet.v6.remote;
firewall.extraCommands = ''
iptables -A INPUT -p vrrp -i br-mgmt -j ACCEPT
ip6tables -A INPUT -p vrrp -i br-mgmt -j ACCEPT
'';
};
services.lukegbgp = {
enable = true;
config = let
linx = {
local = {
asn = 205479;
v4 = cfg.addresses.vl-linx.v4.addr;
v6 = cfg.addresses.vl-linx.v6.addr;
};
};
in {
local.routerID = config.my.blade-router.addresses.linknet.v4.local;
peering.veloxserv = {
local = {
asn = 205479;
v4 = config.my.blade-router.addresses.linknet.v4.local;
v6 = config.my.blade-router.addresses.linknet.v6.local;
};
remote = {
asn = 3170;
export_community = 4001;
bgp_local_pref = 101;
drop_asns = [
15169 # prefer RS to transit
];
routers = [{
v4 = config.my.blade-router.addresses.linknet.v4.remote;
v6 = config.my.blade-router.addresses.linknet.v6.remote;
}];
};
};
peering.bgptoolscollector = {
local = {
asn = 205479;
v4 = config.my.blade-router.addresses.linknet.v4.local;
v6 = config.my.blade-router.addresses.linknet.v6.local;
};
remote = {
asn = 212232;
export_community = 5000;
routers = [{
enabled = cfg.linx.enable;
v4 = "185.230.223.42";
v6 = "2a0c:2f07:9459::b1";
multihop = 64;
}];
prefix_limit.v4 = 0;
prefix_limit.v6 = 0;
is_route_collector = true;
};
};
peering.linxcollector = linx // {
remote = {
asn = 5459;
export_community = 5000;
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.224.254";
v6 = "2001:7f8:4::1553:1";
}];
prefix_limit.v4 = 0;
prefix_limit.v6 = 0;
is_route_collector = false; # don't make people sad.
};
};
peering.linx = linx // {
remote = {
asn = 8714;
export_community = 5001;
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.225.230";
v6 = "2001:7f8:4::220a:1";
} {
enabled = cfg.linx.enable;
v4 = "195.66.225.231";
v6 = "2001:7f8:4::220a:2";
}];
bgp_local_pref = 109;
must_be_next_hop = false;
};
};
peering.facebook = linx // {
remote = {
asn = 32934;
export_community = 5002;
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.225.69";
v6 = "2001:7f8:4::80a6:1";
} {
enabled = cfg.linx.enable;
v4 = "195.66.225.121";
v6 = "2001:7f8:4::80a6:2";
} {
enabled = cfg.linx.enable;
v4 = "195.66.227.19";
v6 = "2001:7f8:4::80a6:5";
} {
enabled = cfg.linx.enable;
v4 = "195.66.226.140";
v6 = "2001:7f8:4::80a6:3";
}];
bgp_local_pref = 120;
prefix_limit.v4 = 100;
prefix_limit.v6 = 100;
};
};
peering.openpeering = linx // {
remote = {
asn = 20562;
export_community = 5003;
passive = true; # pending
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.225.53";
v6 = "2001:7f8:4::5052:1";
}];
bgp_local_pref = 110;
prefix_limit.v4 = 16000;
prefix_limit.v6 = 3000;
};
};
peering.freetransitnet = linx // {
remote = {
asn = 212895;
export_community = 5004;
passive = true; # pending v6
bgp_local_pref = 100;
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.225.105";
v6 = "2001:7f8:4::3:3f9f:2";
}];
};
};
peering.he = linx // {
remote = {
asn = 6939;
export_community = 5005;
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.224.21";
v6 = "2001:7f8:4::1b1b:1";
}];
bgp_local_pref = 108;
prefix_limit.v4 = 176000;
prefix_limit.v6 = 156000;
};
};
peering.clouvider = linx // {
remote = {
asn = 62240;
export_community = 5006;
passive = true; # pending
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.227.14";
v6 = "2001:7f8:4::f320:1";
}];
bgp_local_pref = 120;
prefix_limit.v4 = 1000;
prefix_limit.v6 = 1000;
};
};
peering.google = linx // {
remote = {
asn = 15169;
export_community = 5007;
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.224.125";
v6 = "2001:7f8:4::3b41:1";
}];
bgp_local_pref = 120;
prefix_limit.v4 = 15000;
prefix_limit.v6 = 10000;
};
};
peering.cloudflare = linx // {
remote = {
asn = 13337;
export_community = 5008;
passive = true; # pending
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.225.179";
v6 = "2001:7f8:4::3417:1";
} {
enabled = cfg.linx.enable;
v4 = "195.66.227.207";
v6 = "2001:7f8:4::3417:2";
}];
bgp_local_pref = 120;
prefix_limit.v4 = 20000;
prefix_limit.v6 = 2000;
};
};
peering.fastly = linx // {
remote = {
asn = 54113;
export_community = 5009;
passive = true; # pending
routers = [{
enabled = cfg.linx.enable;
v4 = "195.66.225.91";
v6 = "2001:7f8:4::d361:1";
} {
enabled = cfg.linx.enable;
v4 = "195.66.227.114";
v6 = "2001:7f8:4::d361:2";
}];
bgp_local_pref = 120;
prefix_limit.v4 = 250;
prefix_limit.v6 = 250;
};
};
export.v4 = [ "92.118.28.0/24" ];
export.v6 = [ "2a09:a441::/32" ];
};
};
services.keepalived = let
mgmtBase = {
interface = "br-mgmt";
state = "MASTER";
priority = config.my.blade-router.vrrp.priority;
};
in {
enable = true;
vrrpInstances.mgmtGateway4 = mgmtBase // {
virtualIps = [
{ addr = "10.100.0.1/23"; }
{ addr = "${config.my.blade-router.addresses.br-public-vip.v4.addr}/${toString config.my.blade-router.addresses.br-public-vip.v4.prefixLength}"; dev = "br-public"; }
];
virtualRouterId = 1;
};
vrrpInstances.mgmtGateway6 = mgmtBase // {
virtualIps = [
{ addr = "${config.my.blade-router.addresses.br-public-vip.v6-ll.addr}/${toString config.my.blade-router.addresses.br-public-vip.v6-ll.prefixLength}"; dev = "br-public"; }
{ addr = "${config.my.blade-router.addresses.br-public-vip.v6.addr}/${toString config.my.blade-router.addresses.br-public-vip.v6.prefixLength}"; dev = "br-public"; }
];
virtualRouterId = 2;
};
extraGlobalDefs = ''
enable_script_security
script_user root
'';
extraConfig = ''
vrrp_sync_group mgmtGateway {
group {
mgmtGateway4
mgmtGateway6
}
}
'';
};
services.radvd = {
enable = true;
config = ''
interface br-public {
AdvSendAdvert on;
MinRtrAdvInterval 30;
MaxRtrAdvInterval 100;
AdvRASrcAddress {
${config.my.blade-router.addresses.br-public-vip.v6-ll.addr};
};
prefix ${config.my.blade-router.addresses.br-public-radvd-prefix.addr}/${toString config.my.blade-router.addresses.br-public-radvd-prefix.prefixLength} {
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr off;
};
};
'';
};
};
}
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