Merge branch 'master' of ssh://git.kun.is:56287/home/nixos-servers

This commit is contained in:
Niels Kunis 2024-01-07 20:31:17 +01:00
commit fcf6864b77
20 changed files with 400 additions and 150 deletions

View file

@ -84,6 +84,27 @@
"type": "github"
}
},
"dns": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1635273082,
"narHash": "sha256-EHiDP2jEa7Ai5ZwIf5uld9RVFcV77+2SUxjQXwJsJa0=",
"owner": "kirelagin",
"repo": "dns.nix",
"rev": "c7b9645da9c0ddce4f9de4ef27ec01bb8108039a",
"type": "github"
},
"original": {
"owner": "kirelagin",
"repo": "dns.nix",
"type": "github"
}
},
"flake-compat": {
"flake": false,
"locked": {
@ -116,6 +137,21 @@
"type": "github"
}
},
"flake-utils": {
"locked": {
"lastModified": 1614513358,
"narHash": "sha256-LakhOx3S1dRjnh0b5Dg3mbZyH0ToC9I8Y2wKSkBaTzU=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "5466c5bbece17adaab2d82fae80b46e807611bf3",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"home-manager": {
"inputs": {
"nixpkgs": [
@ -213,6 +249,7 @@
"agenix": "agenix",
"deploy-rs": "deploy-rs",
"disko": "disko",
"dns": "dns",
"kubenix": "kubenix",
"nixpkgs": "nixpkgs_2",
"nixpkgs-unstable": "nixpkgs-unstable"

View file

@ -19,10 +19,15 @@
url = "github:ryantm/agenix";
inputs.nixpkgs.follows = "nixpkgs";
};
dns = {
url = "github:kirelagin/dns.nix";
inputs.nixpkgs.follows = "nixpkgs";
};
};
outputs =
{ self, nixpkgs, deploy-rs, disko, agenix, kubenix, nixpkgs-unstable, ... }:
{ self, nixpkgs, deploy-rs, disko, agenix, kubenix, nixpkgs-unstable, dns, ... }:
let
system = "x86_64-linux";
pkgs = nixpkgs.legacyPackages.${system};
@ -65,7 +70,7 @@
nixosConfigurations = mkNixosSystems (machine: {
inherit system;
specialArgs = { inherit kubenix; };
specialArgs = { inherit kubenix dns; };
modules = [
machine.nixosModule
disko.nixosModules.disko

View file

@ -7,5 +7,5 @@ all:
hosts:
bancomart:
ansible_host: bancomart.dmz
vpay:
ansible_host: vpay.dmz
# vpay:
# ansible_host: vpay.dmz

View file

@ -23,13 +23,6 @@ provider "libvirt" {
uri = "qemu+ssh://root@atlas.hyp/system?known_hosts=/etc/ssh/ssh_known_hosts"
}
module "setup_jefke" {
source = "../../../terraform_modules/setup"
providers = {
libvirt = libvirt.jefke
}
}
module "bancomart" {
source = "../../../terraform_modules/debian"
name = "bancomart"
@ -40,13 +33,6 @@ module "bancomart" {
}
}
module "setup_atlas" {
source = "../../../terraform_modules/setup"
providers = {
libvirt = libvirt.atlas
}
}
module "maestro" {
source = "../../../terraform_modules/debian"
name = "maestro"

View file

@ -0,0 +1,38 @@
terraform {
backend "pg" {
schema_name = "libvirtsetup"
conn_str = "postgresql://terraform@jefke.hyp/terraformstates"
}
required_providers {
libvirt = {
source = "dmacvicar/libvirt"
version = "0.7.1" # https://github.com/dmacvicar/terraform-provider-libvirt/issues/1040
}
}
}
# https://libvirt.org/uri.html#libssh-and-libssh2-transport
provider "libvirt" {
alias = "jefke"
uri = "qemu+ssh://root@jefke.hyp/system?known_hosts=/etc/ssh/ssh_known_hosts"
}
provider "libvirt" {
alias = "atlas"
uri = "qemu+ssh://root@atlas.hyp/system?known_hosts=/etc/ssh/ssh_known_hosts"
}
module "setup_jefke" {
source = "../../terraform_modules/setup"
providers = {
libvirt = libvirt.jefke
}
}
module "setup_atlas" {
source = "../../terraform_modules/setup"
providers = {
libvirt = libvirt.atlas
}
}

View file

@ -4,10 +4,12 @@
hostName = "jefke.hyp";
nixosModule.lab = {
dataDisk.enable = true;
terraformDatabase.enable = true;
# k3s.enable = true;
disko.osDiskDevice = "/dev/nvme0n1";
storage = {
osDisk = "/dev/sda";
dataPartition = "/dev/nvme0n1p1";
};
ssh = {
useCertificates = true;
@ -22,7 +24,10 @@
hostName = "atlas.hyp";
nixosModule.lab = {
disko.osDiskDevice = "/dev/nvme0n1";
storage = {
osDisk = "/dev/sda";
dataPartition = "/dev/nvme0n1p1";
};
ssh = {
useCertificates = true;
@ -37,14 +42,12 @@
hostName = "lewis.hyp";
nixosModule.lab = {
disko.osDiskDevice = "/dev/sda";
backups.enable = true;
networking.allowDMZConnectivity = true;
data-sharing.enable = true;
dataHost.enable = true;
dns.enable = true;
dataDisk = {
enable = true;
devicePath = "/dev/nvme0n1p1";
storage = {
osDisk = "/dev/sda";
dataPartition = "/dev/nvme0n1p1";
};
ssh = {

View file

@ -1,39 +1,42 @@
{ pkgs, lib, config, ... }:
let
cfg = config.lab.backups;
snapshotFile = "/tmp/snapshot.qcow2";
snapshotMount = "/tmp/snapshot";
beforeEverything = pkgs.writeShellScriptBin "beforeEverything" ''
${pkgs.libvirt}/bin/virsh snapshot-create-as --domain ${cfg.domainName} --name backup-${cfg.domainName} --disk-only --quiesce --no-metadata --diskspec vda,snapshot=no --diskspec vdb,file=${snapshotFile} && ${pkgs.coreutils}/bin/sleep 1
${pkgs.coreutils}/bin/mkdir -p ${snapshotMount}
${pkgs.libguestfs-with-appliance}/bin/guestmount -a ${snapshotFile} -m /dev/sda1 --ro ${snapshotMount}
'';
if [ -d "${cfg.snapshotLocation}" ]; then
${pkgs.btrfs-progs}/bin/btrfs subvolume delete ${cfg.snapshotLocation}
fi
afterEverything = pkgs.writeShellScriptBin "afterEverything" ''
set +e
${pkgs.coreutils}/bin/sleep 10
${pkgs.libguestfs-with-appliance}/bin/guestunmount ${snapshotMount} && ${pkgs.coreutils}/bin/sleep 1
${pkgs.coreutils}/bin/rm -rf ${snapshotMount}
${pkgs.libvirt}/bin/virsh blockcommit ${cfg.domainName} vdb --active --verbose --pivot
${pkgs.coreutils}/bin/rm -f ${snapshotFile}
${pkgs.btrfs-progs}/bin/btrfs subvolume snapshot -r ${cfg.subvolumeLocation} ${cfg.snapshotLocation}
'';
borgmaticConfig = pkgs.writeTextFile {
name = "borgmatic-config";
text = ''
source_directories:
- ${snapshotMount}
- ${cfg.snapshotLocation}
repositories:
- path: ${cfg.repoLocation}
label: ${cfg.domainName}
label: nfs
- path: ssh://admin@ec2-3-254-121-39.eu-west-1.compute.amazonaws.com/mnt/data/nfs.borg
label: ec2
ssh_command: "${pkgs.openssh}/bin/ssh -i ${config.age.secrets."ec2_borg_server.pem".path} -o StrictHostKeychecking=no -o ConnectTimeout=10 -o ConnectionAttempts=3"
keep_daily: 7
keep_weekly: 4
keep_monthly: 6
unknown_unencrypted_repo_access_is_ok: true
encryption_passcommand: "${pkgs.coreutils}/bin/cat ''${BORG_PASSPHRASE_FILE}"
before_everything:
- ${beforeEverything}/bin/beforeEverything
after_everything:
- ${afterEverything}/bin/afterEverything
postgresql_databases:
- name: nextcloud
hostname: lewis.dmz
username: nextcloud
password: ''${NEXTCLOUD_DATABASE_PASSWORD}
format: tar
- name: hedgedoc
hostname: lewis.dmz
username: hedgedoc
password: ''${HEDGEDOC_DATABASE_PASSWORD}
format: tar
'';
};
in
@ -48,33 +51,42 @@ in
};
repoLocation = lib.mkOption {
default = "${config.lab.dataDisk.mountPoint}/backups/thecloud-data.borg";
default = "${config.lab.storage.dataMountPoint}/backups/nfs.borg";
type = lib.types.str;
description = ''
Location of the Borg repository to back up to.
'';
};
domainName = lib.mkOption {
default = "thecloud";
subvolumeLocation = lib.mkOption {
default = "${config.lab.storage.dataMountPoint}/nfs";
type = lib.types.str;
description = ''
The name of the Libvirt domain with the data disk attached.
Location of the btrfs subvolume holding the data.
'';
};
snapshotLocation = lib.mkOption {
default = "${config.lab.storage.dataMountPoint}/snapshot-nfs";
type = lib.types.str;
description = ''
Location to (temporary) create a snapshot of the subvolume.
'';
};
};
config = lib.mkIf cfg.enable {
environment.systemPackages = with pkgs; [ libguestfs-with-appliance borgbackup ];
environment.systemPackages = with pkgs; [ postgresql ];
# Converted from:
# https://github.com/borgmatic-collective/borgmatic/tree/84823dfb912db650936e3492f6ead7e0e0d32a0f/sample/systemd
systemd.services.borgmatic = {
description = "borgmatic backup";
wants = [ "network-online.target" ];
after = [ "network-online.target" ];
unitConfig = {
ConditionACPower = true;
};
unitConfig.ConditionACPower = true;
preStart = "${pkgs.coreutils}/bin/sleep 10s";
path = with pkgs; [ postgresql ];
serviceConfig = {
Type = "oneshot";
Nice = 19;
@ -84,23 +96,27 @@ in
IOWeight = 100;
Restart = "no";
LogRateLimitIntervalSec = 0;
};
preStart = "${pkgs.coreutils}/bin/sleep 1m";
script = "${pkgs.systemd}/bin/systemd-inhibit --who=\"borgmatic\" --what=\"sleep:shutdown\" --why=\"Prevent interrupting scheduled backup\" ${pkgs.borgmatic}/bin/borgmatic --verbosity -2 --syslog-verbosity 1";
EnvironmentFile = config.age.secrets."database_passwords.env".path;
Environment = "BORG_PASSPHRASE_FILE=${config.age.secrets."borg_passphrase".path}";
};
environment.etc."borgmatic/config.yaml" = {
source = borgmaticConfig;
script = "${pkgs.systemd}/bin/systemd-inhibit --who=\"borgmatic\" --what=\"sleep:shutdown\" --why=\"Prevent interrupting scheduled backup\" ${pkgs.borgmatic}/bin/borgmatic --verbosity -2 --syslog-verbosity 1 -c ${borgmaticConfig}";
};
# systemd.timers.borgmatic = {
# description = "Run borgmatic backup";
# wantedBy = [ "timers.target" ];
# timerConfig = {
# OnCalendar = "*-*-* 3:00:00";
# Persistent = true;
# RandomizedDelaySec = "3h";
# };
# };
systemd.timers.borgmatic = {
description = "Run borgmatic backup";
wantedBy = [ "timers.target" ];
timerConfig = {
OnCalendar = "*-*-* 3:00:00";
Persistent = true;
RandomizedDelaySec = "3h";
};
};
age.secrets = {
"database_passwords.env".file = ../secrets/database_passwords.env.age;
"borg_passphrase".file = ../secrets/borg_passphrase.age;
"ec2_borg_server.pem".file = ../secrets/ec2_borg_server.pem.age;
};
};
}

View file

@ -1,33 +0,0 @@
{ lib, config, ... }:
let cfg = config.lab.dataDisk;
in {
options.lab.dataDisk = {
enable = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
Whether to automatically mount a disk to be used as a data disk.
'';
};
mountPoint = lib.mkOption {
default = "/mnt/data";
type = lib.types.str;
description = ''
Mount point of the data disk (if enabled).
'';
};
devicePath = lib.mkOption {
default = "/dev/sda1";
type = lib.types.str;
description = ''
Path of the device to be used as a data disk.
'';
};
};
config = lib.mkIf cfg.enable {
fileSystems.${cfg.mountPoint} = { device = cfg.devicePath; };
};
}

View file

@ -1,12 +1,32 @@
{ lib, config, ... }:
let cfg = config.lab.dataHost;
in
{
imports = [
./storage.nix
./terraform-database
./data-disk.nix
./ssh-certificates.nix
./k3s
./disko.nix
./backups.nix
./networking.nix
./data-sharing.nix
./dns
];
options.lab.dataHost.enable = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
Whether this machine holds application data.
This enables NFS and PostgreSQL to serve this data, and sets up backups.
Also enables networking on the DMZ to enable serving data.
'';
};
config.lab = lib.mkIf cfg.enable {
backups.enable = true;
data-sharing.enable = true;
networking.allowDMZConnectivity = true;
};
}

View file

@ -1,39 +0,0 @@
{ lib, config, ... }:
let cfg = config.lab.disko;
in {
options.lab.disko.osDiskDevice = lib.mkOption {
type = lib.types.str;
description = ''
The disk device to be used for the operating system.
'';
};
# TODO: rename this to 'osDisk'. Unfortunately, we would need to run nixos-anywhere again then
config.disko.devices.disk.vdb = {
device = cfg.osDiskDevice;
type = "disk";
content = {
type = "gpt";
partitions = {
ESP = {
type = "EF00";
size = "500M";
content = {
type = "filesystem";
format = "vfat";
mountpoint = "/boot";
};
};
root = {
end = "-4G";
content = {
type = "filesystem";
format = "btrfs";
mountpoint = "/";
};
};
swap = { size = "100%"; };
};
};
};
}

View file

@ -0,0 +1,65 @@
{ pkgs, lib, config, dns, ... }:
let
cfg = config.lab.dns;
publicIpv4 = "192.145.57.90";
kunisZoneFile = pkgs.writeTextFile {
name = "kunis-zone-file";
text = (dns.lib.toString "kun.is" (import ./zones/kun.is.nix { inherit dns publicIpv4; }));
};
geokunis2nlZoneFile = pkgs.writeTextFile {
name = "geokunis2nl-zone-file";
text = (dns.lib.toString "geokunis2.nl" (import ./zones/geokunis2.nl.nix { inherit dns publicIpv4; }));
};
in
{
options.lab.dns.enable = lib.mkOption {
default = false;
type = lib.types.bool;
description = ''
Whether to enable an authoritative DNS server and DNSmasq for DMZ network.
'';
};
config = lib.mkIf cfg.enable {
networking.firewall = {
allowedTCPPorts = [ 53 ];
allowedUDPPorts = [ 53 ];
};
services.bind = {
enable = true;
forwarders = [ ];
# TODO: disable ipv6 for now, as the hosts themselves lack routes it seems.
ipv4Only = true;
extraOptions = ''
allow-transfer { none; };
allow-recursion { none; };
version "No dice.";
'';
zones = {
"kun.is" = {
master = true;
file = kunisZoneFile;
allowQuery = [ "any" ];
extraConfig = ''
notify yes;
allow-update { none; };
'';
};
"geokunis2.nl" = {
master = true;
file = geokunis2nlZoneFile;
allowQuery = [ "any" ];
extraConfig = ''
notify yes;
allow-update { none; };
'';
};
};
};
};
}

View file

@ -0,0 +1,47 @@
{ publicIpv4, dns }:
with dns.lib.combinators;
{
SOA = {
nameServer = "ns";
adminEmail = "hostmaster@geokunis2.nl";
serial = 1704580936;
};
NS = [
"ns.geokunis2.nl."
"ns0.transip.net."
"ns1.transip.nl."
"ns2.transip.eu."
];
MX = [ (mx.mx 10 "mail.geokunis2.nl.") ];
A = [ publicIpv4 ];
AAAA = [ "2a0d:6e00:1a77:30:b62e:99ff:fe77:1bda" ];
CAA = letsEncrypt "caa@geokunis2.nl";
subdomains = {
mail.A = [ publicIpv4 ];
wg4.A = [ publicIpv4 ];
wg6.AAAA = [ "2a0d:6e00:1a77::1" ];
tuindersweijde.A = [ publicIpv4 ];
inbucket.A = [ publicIpv4 ];
kms.A = [ publicIpv4 ];
wg = {
A = [ publicIpv4 ];
AAAA = [ "2a0d:6e00:1a77::1" ];
};
ns = {
A = [ publicIpv4 ];
AAAA = [ "2a0d:6e00:1a77:30:c8fe:c0ff:feff:ee07" ];
};
cyberchef = {
A = [ publicIpv4 ];
AAAA = [ "2a0d:6e00:1a77:30:c8fe:c0ff:feff:ee03" ];
};
};
}

View file

@ -0,0 +1,28 @@
{ publicIpv4, dns }:
with dns.lib.combinators;
{
CAA = letsEncrypt "caa@kun.is";
SOA = {
nameServer = "ns1";
adminEmail = "webmaster@kun.is";
serial = 1704580936;
};
NS = [
"ns1.kun.is."
"ns2.kun.is."
];
MX = [
(mx.mx 10 "mail.kun.is.")
];
subdomains = {
ns.A = [ publicIpv4 ];
ns1.A = [ publicIpv4 ];
ns2.A = [ publicIpv4 ];
"*".A = [ publicIpv4 ];
};
}

66
nixos/modules/storage.nix Normal file
View file

@ -0,0 +1,66 @@
{ lib, config, ... }:
let cfg = config.lab.storage;
in {
options.lab.storage = {
osDisk = lib.mkOption {
type = lib.types.str;
description = ''
The disk to be used for the machine's operating system.
'';
};
dataPartition = lib.mkOption {
type = lib.types.str;
description = ''
Partition to be used for data storage on this machine.
'';
};
dataMountPoint = lib.mkOption {
default = "/mnt/data";
type = lib.types.str;
description = ''
Mount point of the machine's data partition.
'';
};
};
config = {
fileSystems.${cfg.dataMountPoint}.device = cfg.dataPartition;
# TODO: Rename this to 'osDisk'. Unfortunately, we would need to run nixos-anywhere again then.
disko.devices.disk.vdb = {
device = cfg.osDisk;
type = "disk";
content = {
type = "gpt";
partitions = {
swap.size = "100%";
ESP = {
type = "EF00";
size = "500M";
content = {
type = "filesystem";
format = "vfat";
mountpoint = "/boot";
};
};
root = {
end = "-4G";
content = {
type = "filesystem";
format = "btrfs";
mountpoint = "/";
};
};
};
};
};
};
}

View file

@ -18,8 +18,7 @@ in {
package = pkgs.postgresql_15;
enableTCPIP = true;
dataDir = lib.mkIf config.lab.dataDisk.enable
"${config.lab.dataDisk.mountPoint}/postgresql/${config.services.postgresql.package.psqlSchema}";
dataDir = "${config.lab.storage.dataMountPoint}/postgresql/${config.services.postgresql.package.psqlSchema}";
authentication = ''
hostssl terraformstates terraform all cert
@ -37,10 +36,7 @@ in {
ssl_ca_file = serverCert;
};
ensureUsers = [{
name = "terraform";
ensurePermissions = { "DATABASE terraformstates" = "ALL PRIVILEGES"; };
}];
ensureUsers = [{ name = "terraform"; }];
};
age.secrets."postgresql_server.key" = {

View file

@ -0,0 +1,6 @@
age-encryption.org/v1
-> ssh-ed25519 aqswPA BWfWJ0Detm+1l0tYnjR9n5rIUBfdHb/wTnZnGoYx6SU
gp5vcIXtJpF6KJ0cHJ6GRpHQvxi7ij//1LH0afFoRuo
--- exwOM8D5yMcDFp0uzRnbD6TWSgs12WmZo7sKlnHYOwY
4Öš¾0
e(+×}²½f%Àã^ kÀbד{WèŒôVüPän­×“ù:…Å6ý£s

View file

@ -0,0 +1,5 @@
age-encryption.org/v1
-> ssh-ed25519 aqswPA nsjKPakYuFVxfbJkPKnhqPytMz07KIT32xgJpiuaRD0
fv+HZdDb1Evy0LIA5sFMFx+KUbAF7jJojrQXMSSmNAo
--- zJOYXheC2OupvfQNtDfcUCkVMg3TqJQEFjTfAwyi/Pw
¼¬Î°‡<EFBFBD>¨×¶†¡£‰¹maåJ^¤ˆ•€UZÂ>¬f±ââ÷@¨•¤‰÷òmÎG¨`ðrOY2‰#‡ÜŽ¼oΙþ‡= åSƒî_.ô¼MÅa3ŸL<C5B8>ÉÈüçcB·t§ÜËZ× Žç5 c•ä0Á=ŽLK¢¥ +!cu<63>t«Rƒà¥U2îŸ6½ßª½)<13>ƒ¯fPÚ³AU«¤

Binary file not shown.

View file

@ -1,3 +1,4 @@
# TODO: Just encrypt each file with all hosts' public keys (plus our personal public keys) and deploy when demanded.
let
pkgs = import <nixpkgs> { };
lib = pkgs.lib;
@ -28,6 +29,9 @@ let
encryptedFiles = [
"lewis_host_ed25519.age"
"lewis_user_ed25519.age"
"database_passwords.env.age"
"borg_passphrase.age"
"ec2_borg_server.pem.age"
];
};
};