96 lines
2.6 KiB
Nix
96 lines
2.6 KiB
Nix
{ config, lib, ... }:
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# borg core setup
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# ---------------
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# provides an easy interface for all services
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# to append it's files to be backuped
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{
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options = {
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backup = {
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enable = lib.mkEnableOption "enable borg backup";
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dirs = lib.mkOption {
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default = [ ];
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type = with lib.types; listOf str;
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description = ''
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folders to backup
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'';
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};
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exclude = lib.mkOption {
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default = [ ];
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type = with lib.types; listOf str;
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description = ''
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exclude files and folders matching a pattern.
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Theses patterns effect all folders in `backup.dirs`.
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see man borg pattern for more information
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'';
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example = [ ".git" "/home/*/.cache" ".stfolder" ];
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};
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servers = lib.mkOption {
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default = {
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robi.host = "144.76.13.147";
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pepe.host = "pepe.private";
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};
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type = with lib.types; attrsOf (submodule {
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options = {
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host = lib.mkOption {
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type = with lib.types; str;
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};
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user = lib.mkOption {
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default = "borg";
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type = with lib.types; str;
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};
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};
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});
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description = ''
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servers to backup to
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'';
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};
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};
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};
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config =
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let
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myHostname = config.networking.hostName;
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setup = { user, host }: {
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paths = config.backup.dirs;
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exclude = config.backup.exclude;
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doInit = true;
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repo = "${user}@${host}:./${myHostname}";
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encryption = {
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mode = "repokey-blake2";
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passCommand = "cat ${config.sops.secrets.backup_repository_passphrase.path}";
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};
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environment = {
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BORG_RSH = "ssh -i ${toString config.sops.secrets.backup_ssh_rsa_private.path}";
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BORG_RELOCATED_REPO_ACCESS_IS_OK = "yes";
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};
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compression = "auto,lzma";
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startAt = "daily";
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prune.keep = {
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within = "10d"; # Keep all backups in the last 10 days.
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weekly = 8; # Keep 8 additional end of week archives.
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monthly = -1; # Keep end of month archive for every month
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};
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};
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in
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lib.mkIf config.backup.enable {
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sops.secrets.backup_repository_passphrase = { };
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sops.secrets.backup_ssh_rsa_private = { };
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services.borgbackup.jobs =
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lib.mapAttrs (_: target: setup target) config.backup.servers;
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#systemd.services = lib.mapAttrs'
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# (name: _: {
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# name = "borgbackup-job-${name}";
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# value = { enable = config.backup.dirs != [ ]; };
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# })
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# config.backup.servers;
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};
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}
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