Drift/pvv-nixos-config
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base.nix: split into multiple files

This commit is contained in:
Oystein Kristoffer Tveit 2024-08-31 22:23:09 +02:00
parent bd42412b94
commit 3a5b775029
Signed by: oysteikt
GPG Key ID: 9F2F7D8250F35146
18 changed files with 225 additions and 198 deletions
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190
base.nix
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@ -1,190 +0,0 @@
{ config, lib, pkgs, inputs, values, ... }:
{
imports = [
./users
./modules/snakeoil-certs.nix
];
networking.domain = "pvv.ntnu.no";
networking.useDHCP = false;
# networking.search = [ "pvv.ntnu.no" "pvv.org" ];
# networking.nameservers = lib.mkDefault [ "129.241.0.200" "129.241.0.201" ];
# networking.tempAddresses = lib.mkDefault "disabled";
# networking.defaultGateway = values.hosts.gateway;
systemd.network.enable = true;
services.resolved = {
enable = lib.mkDefault true;
dnssec = "false"; # Supposdly this keeps breaking and the default is to allow downgrades anyways...
};
time.timeZone = "Europe/Oslo";
i18n.defaultLocale = "en_US.UTF-8";
console = {
font = "Lat2-Terminus16";
keyMap = "no";
};
system.autoUpgrade = {
enable = true;
flake = "git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git";
flags = [
"--update-input" "nixpkgs"
"--update-input" "nixpkgs-unstable"
"--no-write-lock-file"
];
};
nix.gc.automatic = true;
nix.gc.options = "--delete-older-than 2d";
nix.settings.experimental-features = [ "nix-command" "flakes" ];
/* This makes commandline tools like
** nix run nixpkgs#hello
** and nix-shell -p hello
** use the same channel the system
** was built with
*/
nix.registry = {
nixpkgs.flake = inputs.nixpkgs;
};
nix.nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
environment.systemPackages = with pkgs; [
file
git
gnupg
htop
nano
ripgrep
rsync
screen
tmux
vim
wget
kitty.terminfo
];
programs.zsh.enable = true;
users.groups."drift".name = "drift";
# Trusted users on the nix builder machines
users.groups."nix-builder-users".name = "nix-builder-users";
# Let's not thermal throttle
services.thermald.enable = lib.mkIf (lib.all (x: x) [
(config.nixpkgs.system == "x86_64-linux")
(!config.boot.isContainer or false)
]) true;
services.openssh = {
enable = true;
extraConfig = ''
PubkeyAcceptedAlgorithms=+ssh-rsa
Match Group wheel
PasswordAuthentication no
Match All
'';
settings.PermitRootLogin = "yes";
};
# nginx return 444 for all nonexistent virtualhosts
systemd.services.nginx.after = [ "generate-snakeoil-certs.service" ];
environment.snakeoil-certs = lib.mkIf config.services.nginx.enable {
"/etc/certs/nginx" = {
owner = "nginx";
group = "nginx";
};
};
services.nginx = {
recommendedTlsSettings = true;
recommendedProxySettings = true;
recommendedOptimisation = true;
recommendedGzipSettings = true;
appendConfig = ''
pcre_jit on;
worker_processes auto;
worker_rlimit_nofile 100000;
'';
eventsConfig = ''
worker_connections 2048;
use epoll;
multi_accept on;
'';
};
systemd.services.nginx.serviceConfig = lib.mkIf config.services.nginx.enable {
LimitNOFILE = 65536;
};
services.nginx.virtualHosts."_" = lib.mkIf config.services.nginx.enable {
sslCertificate = "/etc/certs/nginx.crt";
sslCertificateKey = "/etc/certs/nginx.key";
addSSL = true;
extraConfig = "return 444;";
};
# source: https://github.com/logrotate/logrotate/blob/main/examples/logrotate.service
systemd.services.logrotate = {
documentation = [ "man:logrotate(8)" "man:logrotate.conf(5)" ];
unitConfig.RequiresMountsFor = "/var/log";
serviceConfig = {
Nice = 19;
IOSchedulingClass = "best-effort";
IOSchedulingPriority = 7;
ReadWritePaths = [ "/var/log" ];
AmbientCapabilities = [ "" ];
CapabilityBoundingSet = [ "" ];
DeviceAllow = [ "" ];
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true; # disable for third party rotate scripts
PrivateDevices = true;
PrivateNetwork = true; # disable for mail delivery
PrivateTmp = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true; # disable for userdir logs
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProtectSystem = "full";
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true; # disable for creating setgid directories
SocketBindDeny = [ "any" ];
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
];
};
};
networking.firewall.allowedTCPPorts = lib.mkIf config.services.nginx.enable [ 80 443 ];
security.acme = {
acceptTerms = true;
defaults.email = "drift@pvv.ntnu.no";
};
# Let's not spam LetsEncrypt in `nixos-rebuild build-vm` mode:
virtualisation.vmVariant = {
security.acme.defaults.server = "https://127.0.0.1";
security.acme.preliminarySelfsigned = true;
users.users.root.initialPassword = "root";
};
}

50
base/default.nix Normal file
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@ -0,0 +1,50 @@
{ config, lib, pkgs, inputs, values, ... }:
{
imports = [
../users
../modules/snakeoil-certs.nix
./networking.nix
./nix.nix
./services/acme.nix
./services/auto-update.nix
./services/logrotate.nix
./services/nginx.nix
./services/openssh.nix
./services/thermald.nix
];
time.timeZone = "Europe/Oslo";
i18n.defaultLocale = "en_US.UTF-8";
console = {
font = "Lat2-Terminus16";
keyMap = "no";
};
environment.systemPackages = with pkgs; [
file
git
gnupg
htop
nano
ripgrep
rsync
screen
tmux
vim
wget
kitty.terminfo
];
programs.zsh.enable = true;
users.groups."drift".name = "drift";
# Trusted users on the nix builder machines
users.groups."nix-builder-users".name = "nix-builder-users";
}

16
base/networking.nix Normal file
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@ -0,0 +1,16 @@
{ ... }:
{
networking.domain = "pvv.ntnu.no";
networking.useDHCP = false;
# networking.search = [ "pvv.ntnu.no" "pvv.org" ];
# networking.nameservers = lib.mkDefault [ "129.241.0.200" "129.241.0.201" ];
# networking.tempAddresses = lib.mkDefault "disabled";
# networking.defaultGateway = values.hosts.gateway;
systemd.network.enable = true;
services.resolved = {
enable = lib.mkDefault true;
dnssec = "false"; # Supposdly this keeps breaking and the default is to allow downgrades anyways...
};
}

17
base/nix.nix Normal file
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@ -0,0 +1,17 @@
{ ... }:
{
nix.gc.automatic = true;
nix.gc.options = "--delete-older-than 2d";
nix.settings.experimental-features = [ "nix-command" "flakes" ];
/* This makes commandline tools like
** nix run nixpkgs#hello
** and nix-shell -p hello
** use the same channel the system
** was built with
*/
nix.registry = {
nixpkgs.flake = inputs.nixpkgs;
};
nix.nixPath = [ "nixpkgs=${inputs.nixpkgs}" ];
}

15
base/services/acme.nix Normal file
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@ -0,0 +1,15 @@
{ ... }:
{
security.acme = {
acceptTerms = true;
defaults.email = "drift@pvv.ntnu.no";
};
# Let's not spam LetsEncrypt in `nixos-rebuild build-vm` mode:
virtualisation.vmVariant = {
security.acme.defaults.server = "https://127.0.0.1";
security.acme.preliminarySelfsigned = true;
users.users.root.initialPassword = "root";
};
}

12
base/services/auto-upgrade.nix Normal file
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@ -0,0 +1,12 @@
{ ... }:
{
system.autoUpgrade = {
enable = true;
flake = "git+https://git.pvv.ntnu.no/Drift/pvv-nixos-config.git";
flags = [
"--update-input" "nixpkgs"
"--update-input" "nixpkgs-unstable"
"--no-write-lock-file"
];
};
}

42
base/services/logrotate.nix Normal file
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@ -0,0 +1,42 @@
{ ... }:
{
# source: https://github.com/logrotate/logrotate/blob/main/examples/logrotate.service
systemd.services.logrotate = {
documentation = [ "man:logrotate(8)" "man:logrotate.conf(5)" ];
unitConfig.RequiresMountsFor = "/var/log";
serviceConfig = {
Nice = 19;
IOSchedulingClass = "best-effort";
IOSchedulingPriority = 7;
ReadWritePaths = [ "/var/log" ];
AmbientCapabilities = [ "" ];
CapabilityBoundingSet = [ "" ];
DeviceAllow = [ "" ];
LockPersonality = true;
MemoryDenyWriteExecute = true;
NoNewPrivileges = true; # disable for third party rotate scripts
PrivateDevices = true;
PrivateNetwork = true; # disable for mail delivery
PrivateTmp = true;
ProtectClock = true;
ProtectControlGroups = true;
ProtectHome = true; # disable for userdir logs
ProtectHostname = true;
ProtectKernelLogs = true;
ProtectKernelModules = true;
ProtectKernelTunables = true;
ProtectProc = "invisible";
ProtectSystem = "full";
RestrictNamespaces = true;
RestrictRealtime = true;
RestrictSUIDSGID = true; # disable for creating setgid directories
SocketBindDeny = [ "any" ];
SystemCallArchitectures = "native";
SystemCallFilter = [
"@system-service"
];
};
};
}

44
base/services/nginx.nix Normal file
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@ -0,0 +1,44 @@
{ config, lib, ... }:
{
# nginx return 444 for all nonexistent virtualhosts
systemd.services.nginx.after = [ "generate-snakeoil-certs.service" ];
environment.snakeoil-certs = lib.mkIf config.services.nginx.enable {
"/etc/certs/nginx" = {
owner = "nginx";
group = "nginx";
};
};
networking.firewall.allowedTCPPorts = lib.mkIf config.services.nginx.enable [ 80 443 ];
services.nginx = {
recommendedTlsSettings = true;
recommendedProxySettings = true;
recommendedOptimisation = true;
recommendedGzipSettings = true;
appendConfig = ''
pcre_jit on;
worker_processes auto;
worker_rlimit_nofile 100000;
'';
eventsConfig = ''
worker_connections 2048;
use epoll;
multi_accept on;
'';
};
systemd.services.nginx.serviceConfig = lib.mkIf config.services.nginx.enable {
LimitNOFILE = 65536;
};
services.nginx.virtualHosts."_" = lib.mkIf config.services.nginx.enable {
sslCertificate = "/etc/certs/nginx.crt";
sslCertificateKey = "/etc/certs/nginx.key";
addSSL = true;
extraConfig = "return 444;";
};
}

13
base/services/openssh.nix Normal file
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@ -0,0 +1,13 @@
{ ... }:
{
services.openssh = {
enable = true;
extraConfig = ''
PubkeyAcceptedAlgorithms=+ssh-rsa
Match Group wheel
PasswordAuthentication no
Match All
'';
settings.PermitRootLogin = "yes";
};
}

8
base/services/thermald.nix Normal file
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@ -0,0 +1,8 @@
{ config, lib, ... }:
{
# Let's not thermal throttle
services.thermald.enable = lib.mkIf (lib.all (x: x) [
(config.nixpkgs.system == "x86_64-linux")
(!config.boot.isContainer or false)
]) true;
}

2
hosts/bekkalokk/configuration.nix
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@ -3,7 +3,7 @@
imports = [
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
./services/gitea/default.nix

2
hosts/bicep/configuration.nix
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@ -3,7 +3,7 @@
imports = [
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
./services/nginx

2
hosts/bob/configuration.nix
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@ -3,7 +3,7 @@
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
./disks.nix

2
hosts/brzeczyszczykiewicz/configuration.nix
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@ -3,7 +3,7 @@
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
./services/grzegorz.nix

2
hosts/buskerud/configuration.nix
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@ -2,7 +2,7 @@
{
imports = [
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
./services/libvirt.nix

2
hosts/georg/configuration.nix
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@ -3,7 +3,7 @@
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
../../modules/grzegorz.nix

2
hosts/ildkule/configuration.nix
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@ -3,7 +3,7 @@
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
./services/monitoring

2
hosts/shark/configuration.nix
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@ -3,7 +3,7 @@
imports = [
# Include the results of the hardware scan.
./hardware-configuration.nix
../../base.nix
../../base
../../misc/metrics-exporters.nix
];