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https://codeberg.org/PostERG/xamxam.git
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36 lines
1.2 KiB
Bash
Executable File
36 lines
1.2 KiB
Bash
Executable File
#!/bin/bash
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# backup-sqlite.sh — Safe hot backup of the XAMXAM SQLite database.
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#
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# Uses sqlite3's .backup command (WAL-safe) then gzip-compresses.
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# Prunes backups older than RETENTION_DAYS.
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#
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# Usage:
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# /usr/local/bin/backup-sqlite.sh # default: 30 days
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# RETENTION_DAYS=90 /usr/local/bin/backup-sqlite.sh # 90 days
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#
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# Expected to be run from cron:
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# 0 * * * * /usr/local/bin/backup-sqlite.sh >> /var/log/sqlite-backup.log 2>&1
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# 0 2 * * * RETENTION_DAYS=90 /usr/local/bin/backup-sqlite.sh >> /var/log/sqlite-backup.log 2>&1
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set -euo pipefail
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DB_PATH="${DB_PATH:-/var/www/xamxam/storage/xamxam.db}"
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BACKUP_DIR="${BACKUP_DIR:-/var/backups/xamxam}"
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RETENTION_DAYS="${RETENTION_DAYS:-30}"
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TIMESTAMP=$(date +"%Y-%m-%dT%H-%M-%S")
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BACKUP_FILE="$BACKUP_DIR/db-$TIMESTAMP.db.gz"
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TMP_SNAPSHOT="/tmp/xamxam-snapshot-$$.db"
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mkdir -p "$BACKUP_DIR"
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# Safe hot backup using SQLite's online backup API
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sqlite3 "$DB_PATH" ".backup $TMP_SNAPSHOT"
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gzip -c "$TMP_SNAPSHOT" > "$BACKUP_FILE"
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rm -f "$TMP_SNAPSHOT"
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# Prune old backups
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find "$BACKUP_DIR" -name "*.db.gz" -mtime "+${RETENTION_DAYS}" -delete 2>/dev/null || true
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] Backup written: $BACKUP_FILE ($(du -h "$BACKUP_FILE" | cut -f1))"
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