Add capetillo

Added the hetzner VPS capetillo and enabled nginx,
simple-nixos-mailserver and backups.
This commit is contained in:
Emelie Graven 2021-11-22 14:00:07 +01:00
parent 2d83444903
commit e5e4d3688c
Signed by: emelie
GPG key ID: C11123726DBB55A1
22 changed files with 496 additions and 0 deletions

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.gitattributes vendored Normal file
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**/secrets/** filter=git-crypt diff=git-crypt

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.gitignore vendored Normal file
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/result

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ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIH+ZQk80BU/OdQfV990yrkFwvsLVbVZ2Itof/qwxjTn7

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{ ... }:
{
services.nginx = {
enable = true;
# Use recommended settings
recommendedGzipSettings = true;
recommendedOptimisation = true;
recommendedProxySettings = true;
recommendedTlsSettings = true;
# Only allow PFS-enabled ciphers with AES256
sslCiphers = "ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384";
commonHttpConfig = ''
# Add HSTS header with preloading to HTTPS requests.
# Adding this header to HTTP requests is discouraged
map $scheme $hsts_header {
https "max-age=31536000; includeSubdomains; preload";
}
add_header Strict-Transport-Security $hsts_header;
# Enable CSP for your services.
#add_header Content-Security-Policy "script-src 'self'; object-src 'none'; base-uri 'none';" always;
# Minimize information leaked to other domains
add_header 'Referrer-Policy' 'same-origin';
# Disable embedding as a frame
add_header X-Frame-Options DENY;
# Prevent injection of code in other mime types (XSS Attacks)
add_header X-Content-Type-Options nosniff;
# Enable XSS protection of the browser.
# May be unnecessary when CSP is configured properly (see above)
add_header X-XSS-Protection "1; mode=block";
# This might create errors
proxy_cookie_path / "/; secure; HttpOnly; SameSite=strict";
'';
};
}

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{ ... }:
{
services.openssh = {
enable = true;
permitRootLogin = "no";
passwordAuthentication = false;
challengeResponseAuthentication = false;
hostKeys = [ { "path" = "/etc/ssh/ssh_host_ed25519_key"; "type" = "ed25519"; } ];
kexAlgorithms = [ "curve25519-sha256" "curve25519-sha256@libssh.org" ];
macs = [ "hmac-sha2-512-etm@openssh.com" "hmac-sha2-512-etm@openssh.com" "umac-128-etm@openssh.com" ];
};
programs.ssh.knownHosts = {
despondos = {
hostNames = [ "despondos.nao.sh" ];
publicKeyFile = ../data/pubkeys/despondos_host_ed25519_key.pub;
};
};
services.sshguard = {
enable = true;
blocktime = 300;
};
}

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{ config, pkgs, lib, ... }:
{
imports =
[
./hardware-configuration.nix
../../common/services/ssh.nix
./services/acme.nix
./services/nginx.nix
./services/mail.nix
./data/secrets/secrets.nix
];
boot.loader.grub.enable = true;
boot.loader.grub.version = 2;
boot.loader.grub.device = "/dev/sda";
boot.supportedFilesystems = ["zfs"];
services.zfs.autoSnapshot.enable = true;
services.zfs.autoScrub.enable = true;
networking.hostName = "capetillo"; # Define your hostname.
networking.hostId = "17a9ec46";
time.timeZone = "Europe/Copenhagen";
networking.useDHCP = false;
networking.interfaces.ens3.useDHCP = true;
networking.interfaces.ens3.ipv6.addresses = [ { address = "2a01:4f9:c011:50e2::1"; prefixLength = 64; } ];
networking.defaultGateway6 = { address = "fe80::1"; interface = "ens3"; };
users.users.emelie = {
isNormalUser = true;
extraGroups = [ "wheel" ];
openssh.authorizedKeys.keys = [
"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICO4LyBsW1YuUA6i3EL/IZhchSvk7reO4qgRmR/tdQPU emelie@flap"
];
};
users.users.deploy = {
isNormalUser = true;
extraGroups = [ "wheel" ];
openssh.authorizedKeys.keys = [
"ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICO4LyBsW1YuUA6i3EL/IZhchSvk7reO4qgRmR/tdQPU emelie@flap"
];
};
users.groups.backup.members = [ "virtualMail" ];
security.sudo.wheelNeedsPassword = false;
environment.systemPackages = with pkgs; [
vim
htop
iotop
dig
];
nix.trustedUsers = [
"root"
"deploy"
"@wheel"
];
services.openssh.enable = true;
networking.firewall.allowedTCPPorts = [ 22 80 443 ];
# networking.firewall.allowedUDPPorts = [ ... ];
system.stateVersion = "21.05";
}

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# Do not modify this file! It was generated by nixos-generate-config
# and may be overwritten by future invocations. Please make changes
# to /etc/nixos/configuration.nix instead.
{ config, lib, pkgs, modulesPath, ... }:
{
imports =
[ (modulesPath + "/profiles/qemu-guest.nix")
(modulesPath + "/profiles/minimal.nix")
];
boot.initrd.availableKernelModules = [ "ata_piix" "virtio_pci" "virtio_scsi" "xhci_pci" "sd_mod" "sr_mod" ];
boot.initrd.kernelModules = [ ];
boot.kernelModules = [ ];
boot.extraModulePackages = [ ];
fileSystems."/" =
{ device = "rpool/safe/root";
fsType = "zfs";
};
fileSystems."/home" =
{ device = "rpool/safe/home";
fsType = "zfs";
};
fileSystems."/var/www" =
{ device = "rpool/safe/webroot";
fsType = "zfs";
};
fileSystems."/var/vmail" =
{ device = "rpool/safe/mail";
fsType = "zfs";
};
fileSystems."/nix" =
{ device = "rpool/local/nix";
fsType = "zfs";
};
swapDevices = [ ];
}

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{ config, ... }:
{
security.acme = {
acceptTerms = true;
email = "admin+certs@nixaalb.org";
};
}

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{ config, ... }:
{
imports = [
(builtins.fetchTarball {
# Pick a commit from the branch you are interested in
url = "https://gitlab.com/simple-nixos-mailserver/nixos-mailserver/-/archive/5675b122a947b40e551438df6a623efad19fd2e7/nixos-mailserver-5675b122a947b40e551438df6a623efad19fd2e7.tar.gz";
# And set its hash
sha256 = "1fwhb7a5v9c98nzhf3dyqf3a5ianqh7k50zizj8v5nmj3blxw4pi";
})
];
mailserver = {
enable = true;
fqdn = "nixaalb.org";
domains = [ "nixaalb.org" ];
loginAccounts = {
"emelie@nixaalb.org" = {
hashedPasswordFile = config.secrets.files.mail_emelie_nixaalb_org.file;
aliases = [ "admin@nixaalb.org" ];
};
"sebastian@nixaalb.org" = {
hashedPasswordFile = config.secrets.files.mail_sebastian_nixaalb_org.file;
};
"noreply@anarkafem.dev" = {
hashedPasswordFile = config.secrets.files.mail_noreply_anarkafem_dev.file;
};
};
certificateScheme = 3;
};
}

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{
imports = [ ../../../common/services/nginx.nix ];
services.nginx.virtualHosts = {
"nixaalb.org" = {
enableACME = true;
forceSSL = true;
root = "/var/www/nixaalb.org/public";
};
"mta-sts.nixaalb.org" = {
enableACME = true;
forceSSL = true;
root = "/var/www/mta-sts/public";
};
};
}

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let
sources = import ./nix/sources.nix;
# just use standard pkgs from sources
# so that we have our applyPattches function
pkgs = import sources.nixpkgs {};
in {
nixus = sources.nixus;
} // sources

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{
"niv": {
"branch": "master",
"description": "Easy dependency management for Nix projects",
"homepage": "https://github.com/nmattia/niv",
"owner": "nmattia",
"repo": "niv",
"rev": "5830a4dd348d77e39a0f3c4c762ff2663b602d4c",
"sha256": "1d3lsrqvci4qz2hwjrcnd8h5vfkg8aypq3sjd4g3izbc8frwz5sm",
"type": "tarball",
"url": "https://github.com/nmattia/niv/archive/5830a4dd348d77e39a0f3c4c762ff2663b602d4c.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"nixos-hardware": {
"branch": "master",
"description": "A collection of NixOS modules covering hardware quirks.",
"homepage": "",
"owner": "nixos",
"repo": "nixos-hardware",
"rev": "08cda8e3a5a4e685af525e5a589dfeb74267d505",
"sha256": "0bf3mbss7c3lyf5h8g1vwjbs0cg4h0c8ixbaz1kv24ahyy8n61y3",
"type": "tarball",
"url": "https://github.com/nixos/nixos-hardware/archive/08cda8e3a5a4e685af525e5a589dfeb74267d505.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"nixpkgs": {
"branch": "release-21.05",
"description": "Nix Packages collection",
"homepage": "",
"owner": "NixOS",
"repo": "nixpkgs",
"rev": "02ee434b10ef3e55b92ed2fbf0f1f9d0d20d2f6d",
"sha256": "163xpxkav524pq7wbc6sbsl9fkzc4wshpjq0h7vq7csnsb8w6p77",
"type": "tarball",
"url": "https://github.com/NixOS/nixpkgs/archive/02ee434b10ef3e55b92ed2fbf0f1f9d0d20d2f6d.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
},
"nixus": {
"branch": "master",
"description": null,
"homepage": "",
"owner": "infinisil",
"repo": "nixus",
"rev": "851b6b7480815afd0032fd15ebcf23e80e1d7e57",
"sha256": "1vr39sa7gldwkkhcq70ki878zgnj9z4gvwg85asi2mai0x47f3lb",
"type": "tarball",
"url": "https://github.com/infinisil/nixus/archive/851b6b7480815afd0032fd15ebcf23e80e1d7e57.tar.gz",
"url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
}
}

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# This file has been generated by Niv.
let
#
# The fetchers. fetch_<type> fetches specs of type <type>.
#
fetch_file = pkgs: name: spec:
let
name' = sanitizeName name + "-src";
in
if spec.builtin or true then
builtins_fetchurl { inherit (spec) url sha256; name = name'; }
else
pkgs.fetchurl { inherit (spec) url sha256; name = name'; };
fetch_tarball = pkgs: name: spec:
let
name' = sanitizeName name + "-src";
in
if spec.builtin or true then
builtins_fetchTarball { name = name'; inherit (spec) url sha256; }
else
pkgs.fetchzip { name = name'; inherit (spec) url sha256; };
fetch_git = name: spec:
let
ref =
if spec ? ref then spec.ref else
if spec ? branch then "refs/heads/${spec.branch}" else
if spec ? tag then "refs/tags/${spec.tag}" else
abort "In git source '${name}': Please specify `ref`, `tag` or `branch`!";
in
builtins.fetchGit { url = spec.repo; inherit (spec) rev; inherit ref; };
fetch_local = spec: spec.path;
fetch_builtin-tarball = name: throw
''[${name}] The niv type "builtin-tarball" is deprecated. You should instead use `builtin = true`.
$ niv modify ${name} -a type=tarball -a builtin=true'';
fetch_builtin-url = name: throw
''[${name}] The niv type "builtin-url" will soon be deprecated. You should instead use `builtin = true`.
$ niv modify ${name} -a type=file -a builtin=true'';
#
# Various helpers
#
# https://github.com/NixOS/nixpkgs/pull/83241/files#diff-c6f540a4f3bfa4b0e8b6bafd4cd54e8bR695
sanitizeName = name:
(
concatMapStrings (s: if builtins.isList s then "-" else s)
(
builtins.split "[^[:alnum:]+._?=-]+"
((x: builtins.elemAt (builtins.match "\\.*(.*)" x) 0) name)
)
);
# The set of packages used when specs are fetched using non-builtins.
mkPkgs = sources: system:
let
sourcesNixpkgs =
import (builtins_fetchTarball { inherit (sources.nixpkgs) url sha256; }) { inherit system; };
hasNixpkgsPath = builtins.any (x: x.prefix == "nixpkgs") builtins.nixPath;
hasThisAsNixpkgsPath = <nixpkgs> == ./.;
in
if builtins.hasAttr "nixpkgs" sources
then sourcesNixpkgs
else if hasNixpkgsPath && ! hasThisAsNixpkgsPath then
import <nixpkgs> {}
else
abort
''
Please specify either <nixpkgs> (through -I or NIX_PATH=nixpkgs=...) or
add a package called "nixpkgs" to your sources.json.
'';
# The actual fetching function.
fetch = pkgs: name: spec:
if ! builtins.hasAttr "type" spec then
abort "ERROR: niv spec ${name} does not have a 'type' attribute"
else if spec.type == "file" then fetch_file pkgs name spec
else if spec.type == "tarball" then fetch_tarball pkgs name spec
else if spec.type == "git" then fetch_git name spec
else if spec.type == "local" then fetch_local spec
else if spec.type == "builtin-tarball" then fetch_builtin-tarball name
else if spec.type == "builtin-url" then fetch_builtin-url name
else
abort "ERROR: niv spec ${name} has unknown type ${builtins.toJSON spec.type}";
# If the environment variable NIV_OVERRIDE_${name} is set, then use
# the path directly as opposed to the fetched source.
replace = name: drv:
let
saneName = stringAsChars (c: if isNull (builtins.match "[a-zA-Z0-9]" c) then "_" else c) name;
ersatz = builtins.getEnv "NIV_OVERRIDE_${saneName}";
in
if ersatz == "" then drv else
# this turns the string into an actual Nix path (for both absolute and
# relative paths)
if builtins.substring 0 1 ersatz == "/" then /. + ersatz else /. + builtins.getEnv "PWD" + "/${ersatz}";
# Ports of functions for older nix versions
# a Nix version of mapAttrs if the built-in doesn't exist
mapAttrs = builtins.mapAttrs or (
f: set: with builtins;
listToAttrs (map (attr: { name = attr; value = f attr set.${attr}; }) (attrNames set))
);
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/lists.nix#L295
range = first: last: if first > last then [] else builtins.genList (n: first + n) (last - first + 1);
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L257
stringToCharacters = s: map (p: builtins.substring p 1 s) (range 0 (builtins.stringLength s - 1));
# https://github.com/NixOS/nixpkgs/blob/0258808f5744ca980b9a1f24fe0b1e6f0fecee9c/lib/strings.nix#L269
stringAsChars = f: s: concatStrings (map f (stringToCharacters s));
concatMapStrings = f: list: concatStrings (map f list);
concatStrings = builtins.concatStringsSep "";
# https://github.com/NixOS/nixpkgs/blob/8a9f58a375c401b96da862d969f66429def1d118/lib/attrsets.nix#L331
optionalAttrs = cond: as: if cond then as else {};
# fetchTarball version that is compatible between all the versions of Nix
builtins_fetchTarball = { url, name ? null, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchTarball;
in
if lessThan nixVersion "1.12" then
fetchTarball ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
else
fetchTarball attrs;
# fetchurl version that is compatible between all the versions of Nix
builtins_fetchurl = { url, name ? null, sha256 }@attrs:
let
inherit (builtins) lessThan nixVersion fetchurl;
in
if lessThan nixVersion "1.12" then
fetchurl ({ inherit url; } // (optionalAttrs (!isNull name) { inherit name; }))
else
fetchurl attrs;
# Create the final "sources" from the config
mkSources = config:
mapAttrs (
name: spec:
if builtins.hasAttr "outPath" spec
then abort
"The values in sources.json should not have an 'outPath' attribute"
else
spec // { outPath = replace name (fetch config.pkgs name spec); }
) config.sources;
# The "config" used by the fetchers
mkConfig =
{ sourcesFile ? if builtins.pathExists ./sources.json then ./sources.json else null
, sources ? if isNull sourcesFile then {} else builtins.fromJSON (builtins.readFile sourcesFile)
, system ? builtins.currentSystem
, pkgs ? mkPkgs sources system
}: rec {
# The sources, i.e. the attribute set of spec name to spec
inherit sources;
# The "pkgs" (evaluated nixpkgs) to use for e.g. non-builtin fetchers
inherit pkgs;
};
in
mkSources (mkConfig {}) // { __functor = _: settings: mkSources (mkConfig settings); }

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let
sources = import ../config/sources;
in import "${sources.nixus}" {} ({ config, ... }: {
defaults = { name, ... }: {
configuration = { lib, ... }: {
networking.hostName = lib.mkDefault name;
};
# use our nixpkgs from niv
nixpkgs = sources.nixpkgs;
};
nodes = {
capetillo = { lib, config, ... }: {
host = "deploy@nixaalb.org";
configuration = ../config/hosts/capetillo/configuration.nix;
switchTimeout = 300;
successTimeout = 300;
#ignoreFailingSystemdUnits = true;
};
};
})