game server backups
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@@ -19,8 +19,10 @@ let
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timemachine = {
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browseable = true;
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"path" = "/holocron/archives/timemachine";
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"valid users" = "blake";
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"public" = "no";
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"writeable" = "yes";
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"force user" = "blake";
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"fruit:aapl" = "yes";
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"fruit:time machine" = "yes";
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"vfs objects" = "catia fruit streams_xattr";
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@@ -109,7 +109,7 @@ in {
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# add to backups
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system.backups.baks = {
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${service} = {paths = [cfg.data_dir "/var/lib/redis-immich" "/var/backups/postgresql/immich.sql.zstd"];};
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${service} = {paths = [cfg.data_dir "/var/lib/redis-immich" "/var/backup/postgresql/immich.sql.zstd"];};
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};
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};
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}
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@@ -113,11 +113,11 @@ in
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};
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# add to backups
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system.backups.baks = lib.listToAttrs (
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system.backups.gameserver_baks = lib.listToAttrs (
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lib.mapAttrsToList (srv_name: cfg:
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{
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name = srv_name; # attribute key
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value = { paths = [ cfg.data_dir "/var/backups/mysql/${service}_db.zst" ]; }; # attribute value
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value = { paths = [ cfg.data_dir "/var/backup/mysql/${service}_db.zst" ]; }; # attribute value
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}
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) servers
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);
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@@ -29,11 +29,21 @@ in {
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default = {};
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description = "backup jobs, nested attribute sets should be <bak_name> = paths [<list_of_paths>]";
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};
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gameserver_baks = lib.mkOption {
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type = lib.types.attrsOf (lib.types.attrsOf (lib.types.listOf lib.types.path));
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default = {};
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description = "backup jobs for game servers, nested attribute sets should be <bak_name> = paths [<list_of_paths>]";
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};
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repo = lib.mkOption {
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type = lib.types.path;
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default = "/holocron/archives/devices/snowbelle";
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description = "borg repository path";
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};
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gameserver_repo = lib.mkOption {
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type = lib.types.path;
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default = "/holocron/archives/gameservers/borg";
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description = "borg repository path";
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};
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passwd_file = lib.mkOption {
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type = lib.types.path;
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default = sec."borg_passwd".path;
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@@ -47,12 +57,16 @@ in {
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};
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config = lib.mkIf (cfg.enable && cfg.baks != {}) {
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# create and or set perms for repo dirs
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systemd.tmpfiles.rules = [
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"d /holocron/archives 2770 root archives - -"
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"d ${cfg.repo} 2770 root archives - -"
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"d ${cfg.gameserver_repo} 2770 root archives - -"
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];
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# create servie to backup services
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systemd.services.backups = {
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description = "backup service with borg!";
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description = "backup services with borg!";
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path = [pkgs.borgbackup];
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serviceConfig = {
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Type = "oneshot";
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@@ -143,7 +157,6 @@ in {
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'';
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};
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};
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# create timer to run backups daily
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systemd.timers.backups = {
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description = "daily borg backup timer";
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@@ -154,13 +167,88 @@ in {
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};
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};
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# create servie to backup gameservers (back these up hourly)
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systemd.services.gameserver_backups = {
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description = "backup services with borg!";
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path = [pkgs.borgbackup];
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serviceConfig = {
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Type = "oneshot";
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User = "root";
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Group = "archives"; # make perms shake out
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# the actual script borg is using
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ExecStart = pkgs.writeShellScript "borg-gameserver_backup" ''
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backup() {
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set -euo pipefail
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export BORG_PASSPHRASE="$(cat ${cfg.passwd_file})"
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export BORG_REPO="${cfg.gameserver_repo}"
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timestamp="$(date +'%Y-%m-%d_%H:%M:%S')"
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# init repo in needed
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if ! borg info "$BORG_REPO" >/dev/null 2>&1; then
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echo "Initializing Borg repo at $BORG_REPO"
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borg init --encryption=repokey "$BORG_REPO"
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fi
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borg break-lock "$BORG_REPO" || true
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echo "starting backup at $timestamp"
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# loop for each backup
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${lib.concatStringsSep "\n\n" (lib.mapAttrsToList (
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bak_name: bak_paths: ''
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echo "------------ Backing up ${bak_name} ------------"
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archive="$timestamp-${bak_name}"
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echo "backing up: ${lib.concatStringsSep " " bak_paths.paths} → $archive"
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borg create \
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--verbose \
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--filter AME \
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--list \
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--stats \
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--show-rc \
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--compression lz4 \
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"$BORG_REPO::$archive" \
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${lib.concatStringsSep " " bak_paths.paths}
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echo "pruning old backups for ${bak_name}..."
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borg prune -v --list "$BORG_REPO" \
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--glob-archives "*-${bak_name}" \
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--keep-hourly=24 \
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--keep-daily=7 \
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--keep-weekly=12 \
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--keep-monthly=12
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echo "backup run complete at \"$BORG_REPO::$archive\""
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''
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)
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cfg.gameserver_baks)}
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}
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start_time=$(date +%s)
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backup
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end_time=$(date +%s)
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exec_time=$((end_time - start_time))
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cpu_usage=$(top -bn1 | grep "Cpu(s)" | sed "s/.*, *\([0-9.]*\)%* id.*/\1/" | awk '{print 100 - $1"%"}')
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echo ""
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echo "backup stats:"
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echo "exec time: $exec_time"
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echo "cpu usage: $cpu_usage"
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'';
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};
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};
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# create timer to run backups daily
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systemd.timers.gameserver_backups = {
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description = "daily borg backup timer";
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wantedBy = ["timers.target"];
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timerConfig = {
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OnCalendar = "*-*-* *:01:00"; # every hour, at :01
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Persistent = true;
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};
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};
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# db backups
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services.mysqlBackup = lib.mkIf config.services.mysql.enable {
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# mc servers use this
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enable = true;
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location = "/var/backup/mysql";
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user = "root";
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calendar = "03:58:00";
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calendar = "*-*-* *:01:00";
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compressionAlg = "zstd";
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databases = config.services.mysql.ensureDatabases; # set to all databases defined in esure databases
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};
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