445 lines
13 KiB
Nix
445 lines
13 KiB
Nix
# Edit this configuration file to define what should be installed on
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# your system. Help is available in the configuration.nix(5) man page
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# and in the NixOS manual (accessible by running ‘nixos-help’).
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{ config, pkgs, lib, ... }:
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let
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tailscale_subnet4 = "100.89.176.0/20";
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ssh_pubkeys = {
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motiejus = "ssh-rsa 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";
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vno1_root = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMiWb7yeSeuFCMZWarKJD6ZSxIlpEHbU++MfpOIy/2kh";
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};
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mountLatest = ({mountpoint, zfs_name}:
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''
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set -euo pipefail
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${pkgs.util-linux}/bin/umount ${mountpoint}/.snapshot-latest &>/dev/null || :
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mkdir -p ${mountpoint}/.snapshot-latest
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${pkgs.util-linux}/bin/mount -t zfs $(${pkgs.zfs}/bin/zfs list -H -t snapshot -o name ${zfs_name} | sort | tail -1) ${mountpoint}/.snapshot-latest
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''
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);
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umountLatest = ({mountpoint, ...}:
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''set -euo pipefail
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${pkgs.util-linux}/bin/umount ${mountpoint}/.snapshot-latest
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''
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);
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backup_paths = {
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var_lib = {
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mountpoint = "/var/lib";
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zfs_name = "rpool/nixos/var/lib";
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paths = [
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"/var/lib/.snapshot-latest/gitea"
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"/var/lib/.snapshot-latest/headscale"
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];
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backup_at = "*-*-* *:01:00";
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};
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var_log = {
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mountpoint = "/var/log";
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zfs_name = "rpool/nixos/var/log";
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paths = [ "/var/log/.snapshot-latest/caddy/" ];
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patterns = [
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"+ /var/log/.snapshot-latest/caddy/access-beta.jakstys.lt.log-*.zst"
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"- *"
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];
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backup_at = "*-*-* 00:10:00";
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};
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};
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in {
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imports =
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[
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/etc/nixos/hardware-configuration.nix /etc/nixos/zfs.nix
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];
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boot.initrd.network = {
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enable = true;
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ssh = {
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enable = true;
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port = 22;
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authorizedKeys = builtins.attrValues ssh_pubkeys;
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hostKeys = [ "/etc/secrets/initrd/ssh_host_ed25519_key" ];
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};
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};
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security.sudo = {
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wheelNeedsPassword = false;
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execWheelOnly = true;
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};
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time.timeZone = "UTC";
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users = {
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mutableUsers = false;
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users = {
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git = {
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description = "Gitea Service";
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home = "/var/lib/gitea";
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useDefaultShell = true;
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group = "gitea";
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isSystemUser = true;
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};
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motiejus = {
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isNormalUser = true;
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extraGroups = [ "wheel" ];
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openssh.authorizedKeys.keys = [ ssh_pubkeys.motiejus ];
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};
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};
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};
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environment.systemPackages = with pkgs; [
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jq
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vim
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git
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tmux
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tree
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wget
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lsof
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file
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htop
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#ncdu
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sqlite
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ripgrep
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binutils
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pciutils
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headscale
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mailutils
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nixos-option
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];
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programs.mtr.enable = true;
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programs.mosh.enable = true;
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programs.ssh.knownHosts = {
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"vno1-oh2.servers.jakst" = {
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extraHostNames = ["dl.jakstys.lt" "vno1-oh2.jakstys.lt"];
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHtYsaht57g2sp6UmLHqsCK+fHjiiZ0rmGceFmFt88pY";
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};
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"hel1-a.servers.jakst" = {
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extraHostNames = ["hel1-a.jakstys.lt" "git.jakstys.lt" "vpn.jakstys.lt"];
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIF6Wd2lKrpP2Gqul10obMo2dc1xKaaLv0I4FAnfIaFKu";
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};
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"hel1-b.servers.jakst" = {
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extraHostNames = ["hel1-b.jakstys.lt" "jakstys.lt"];
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINCJxdEkgQ3U0XxqDibk0g3iV+FG423Yk8hj6VAIOpT5";
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};
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"mtwork.motiejus.jakst" = {
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOvNuABV5KXmh6rmS+R50XeJ9/V+Sgpuc1DrlYXW2bQb";
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};
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"zh2769.rsync.net" = {
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIJtclizeBy1Uo3D86HpgD3LONGVH0CJ0NT+YfZlldAJd";
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};
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"github.com" = {
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOMqqnkVzrm0SdG6UOoqKLsabgH5C9okWi0dh2l9GKJl";
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};
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"git.sr.ht" = {
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publicKey = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIMZvRd4EtM7R+IHVMWmDkVU3VLQTSwQDSAvW0t2Tkj60";
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};
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};
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services = {
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zfs = {
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autoScrub.enable = true;
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trim.enable = true;
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expandOnBoot = "all";
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};
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sanoid = {
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enable = true;
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templates.prod = {
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hourly = 24;
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daily = 7;
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autosnap = true;
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autoprune = true;
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};
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datasets = lib.mapAttrs' (name: value: {
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name = value.zfs_name;
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value = { use_template = ["prod"]; };
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}) backup_paths;
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extraArgs = [ "--verbose" ];
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};
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borgbackup.jobs = lib.mapAttrs' (name: value:
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let
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snapshot = { mountpoint = value.mountpoint; zfs_name = value.zfs_name; };
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rwpath = value.mountpoint + "/.snapshot-latest";
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in {
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name = name;
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value = {
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doInit = true;
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repo = "zh2769@zh2769.rsync.net:hel1-a.servers.jakst";
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encryption = {
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mode = "repokey-blake2";
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passCommand = "cat /var/src/secrets/borgbackup/password";
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};
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paths = value.paths;
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extraArgs = "--remote-path=borg1";
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compression = "auto,lzma";
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startAt = value.backup_at;
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readWritePaths = [ rwpath ];
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preHook = mountLatest snapshot;
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postHook = umountLatest snapshot;
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prune.keep = {
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within = "1d";
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daily = 7;
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weekly = 4;
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monthly = 3;
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};
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} // lib.optionalAttrs (value ? patterns) {
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patterns = value.patterns;
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};
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}) backup_paths;
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openssh = {
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enable = true;
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passwordAuthentication = false;
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permitRootLogin = "no";
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extraConfig = ''
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AcceptEnv GIT_PROTOCOL
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'';
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};
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locate = {
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enable = true;
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locate = pkgs.plocate;
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localuser = null;
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};
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headscale = {
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enable = true;
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serverUrl = "https://vpn.jakstys.lt";
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openIdConnect = {
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issuer = "https://git.jakstys.lt/";
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clientId = "1c5fe796-452c-458d-b295-71a9967642fc";
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clientSecretFile = "/var/lib/headscale/oidc_client_secret"; # https://github.com/juanfont/headscale/pull/1127
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};
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settings = {
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ip_prefixes = [
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tailscale_subnet4
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"fd7a:115c:a1e0:59b0::/64"
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];
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dns_config = {
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nameservers = [ "1.1.1.1" "8.8.4.4" ];
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magic_dns = true;
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base_domain = "jakst";
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};
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};
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};
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tailscale.enable = true;
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gitea = {
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enable = true;
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user = "git";
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database.user = "git";
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domain = "git.jakstys.lt";
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rootUrl = "https://git.jakstys.lt";
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httpAddress = "127.0.0.1";
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httpPort = 3000;
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settings = {
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admin.DISABLE_REGULAR_ORG_CREATION = true;
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api.ENABLE_SWAGGER = false;
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mirror.ENABLED = false;
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other.SHOW_FOOTER_VERSION = false;
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packages.ENABLED = false;
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repository = {
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DEFAULT_REPO_UNITS = "repo.code,repo.releases";
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DISABLE_MIGRATIONS = true;
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DISABLE_STARS = true;
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ENABLE_PUSH_CREATE_USER = true;
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};
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security.LOGIN_REMEMBER_DAYS = 30;
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server = {
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ENABLE_GZIP = true;
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LANDING_PAGE = "/motiejus";
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};
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service = {
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DISABLE_REGISTRATION = true;
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ENABLE_TIMETRACKING = false;
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ENABLE_USER_HEATMAP = false;
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SHOW_MILESTONES_DASHBOARD_PAGE = false;
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COOKIE_SECURE = true;
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};
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# TODO: does not work with 1.7.4, getting error
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# in the UI when testing the email sending workflow.
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#mailer = {
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# ENABLED = true;
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# MAILER_TYPE = "sendmail";
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# FROM = "<noreply@jakstys.lt>";
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# SENDMAIL_PATH = "${pkgs.system-sendmail}/bin/sendmail";
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#};
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"service.explore".DISABLE_USERS_PAGE = true;
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};
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};
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caddy = {
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enable = true;
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email = "motiejus+acme@jakstys.lt";
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virtualHosts."vpn.jakstys.lt".extraConfig = ''
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reverse_proxy 127.0.0.1:8080
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'';
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virtualHosts."git.jakstys.lt".extraConfig = ''
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reverse_proxy 127.0.0.1:3000
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'';
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virtualHosts."beta.jakstys.lt" = {
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logFormat = ''
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output file ${config.services.caddy.logDir}/access-beta.jakstys.lt.log {
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roll_disabled
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}
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'';
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extraConfig = ''
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header /_/* Cache-Control "public, max-age=31536000, immutable"
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root * /var/www/jakstys.lt
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file_server {
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precompressed br gzip
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}
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@matrixMatch {
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path /.well-known/matrix/client
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path /.well-known/matrix/server
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}
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header @matrixMatch Content-Type application/json
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header @matrixMatch Access-Control-Allow-Origin *
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header @matrixMatch Cache-Control "public, max-age=3600, immutable"
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handle /.well-known/matrix/client {
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respond "{\"m.homeserver\": {\"base_url\": \"https://jakstys.lt\"}}" 200
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}
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handle /.well-known/matrix/server {
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respond "{\"m.server\": \"jakstys.lt:443\"}" 200
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}
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handle /_matrix/* {
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reverse_proxy http://hel1-b.servers.jakst:8088
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}
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'';
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};
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};
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postfix = {
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enable = true;
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enableSmtp = true;
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networks = [ "127.0.0.1/8" "[::ffff:127.0.0.0]/104" "[::1]/128" tailscale_subnet4 ];
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hostname = "hel1-a.jakstys.lt";
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relayHost = "smtp.sendgrid.net";
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relayPort = 587;
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mapFiles = {
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sasl_passwd = "/var/src/secrets/postfix/sasl_passwd";
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};
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extraConfig = ''
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smtp_sasl_auth_enable = yes
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smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
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smtp_sasl_security_options = noanonymous
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smtp_sasl_tls_security_options = noanonymous
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smtp_tls_security_level = encrypt
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header_size_limit = 4096000
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'';
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};
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logrotate = {
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settings = {
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"/var/log/caddy/access-beta.jakstys.lt.log" = {
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rotate = 60;
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frequency = "daily";
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dateext = true;
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dateyesterday = true;
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compress = true;
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compresscmd = "${pkgs.zstd}/bin/zstd";
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compressext = ".zst";
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compressoptions = "--long -19";
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uncompresscmd = "${pkgs.zstd}/bin/unzstd";
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postrotate = "${pkgs.systemd}/bin/systemctl restart caddy";
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};
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};
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};
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};
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# TODO: compress static stuff
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#${pkgs.findutils}/bin/find ${pkgs.gitea.data} -name '*.css' -exec ${pkgs.brotli}/bin/brotli {} \+
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networking = {
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hostName = "hel1-a";
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domain = "jakstys.lt";
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firewall = {
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allowedTCPPorts = [ 80 443 ];
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allowedUDPPorts = [ 443 ];
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checkReversePath = "loose"; # tailscale insists on this
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};
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};
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system = {
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copySystemConfiguration = true;
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autoUpgrade.enable = true;
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autoUpgrade = {
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allowReboot = true;
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rebootWindow = {
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lower = "01:00";
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upper = "01:30";
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};
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};
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};
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nix.gc = {
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automatic = true;
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dates = "daily";
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options = "--delete-older-than 14d";
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};
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systemd.services = {
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"make-snapshot-dirs" = let
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vals = builtins.attrValues backup_paths;
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mountpoints = builtins.catAttrs "mountpoint" vals;
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unique_mountpoints = lib.unique mountpoints;
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in {
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description = "prepare snapshot directories for backups";
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wantedBy = ["multi-user.target"];
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serviceConfig = {
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Type = "oneshot";
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ExecStart = builtins.map (d: "${pkgs.coreutils}/bin/mkdir -p ${d}/.snapshot-latest") unique_mountpoints;
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RemainAfterExit = true;
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};
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};
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# https://northernlightlabs.se/2014-07-05/systemd-status-mail-on-unit-failure.html
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"unit-status-mail@" = let
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script = pkgs.writeShellScript "unit-status-mail" ''
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MAILTO="motiejus+alerts@jakstys.lt"
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UNIT=$1
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EXTRA=""
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for e in "''${@:2}"; do
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EXTRA+="$e"$'\n'
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done
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UNITSTATUS=$(${pkgs.systemd}/bin/systemctl status "$UNIT")
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${pkgs.postfix}/bin/sendmail $MAILTO <<EOF
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Subject:Status mail for unit: $UNIT
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Status report for unit: $UNIT
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$EXTRA
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$UNITSTATUS
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EOF
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echo -e "Status mail sent to: $MAILTO for unit: $UNIT"
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'';
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in {
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description = "Send an email on unit failure";
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serviceConfig = {
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Type = "simple";
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ExecStart = ''${script} "%I" "Hostname: %H" "Machine ID: %m" "Boot ID: %b" '';
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};
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};
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} // lib.mapAttrs' (name: value: {
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name = "borgbackup-job-${name}";
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value = {
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unitConfig.OnFailure = "unit-status-mail@borgbackup-job-${name}.service";
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};
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}) backup_paths;
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# Do not change
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system.stateVersion = "22.11";
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}
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