9d1b1917a7
- Created DATABASE_BACKUP_SETUP.md for detailed backup instructions - Implemented backup-databases.sh for automated database backups - Added logrotate configuration for managing backup logs - Developed setup scripts for user-specific backup configurations - Included error handling and logging in backup processes - Established cron job setup for automated backups - Provided examples and troubleshooting tips in documentation
117 lines
3.5 KiB
Bash
Executable File
117 lines
3.5 KiB
Bash
Executable File
#!/bin/bash
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###############################################################################
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# Database Backup Script for MariaDB
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#
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# Features:
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# - Dumps all databases from MariaDB
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# - Compresses backups with gzip
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# - Rotates backups to keep only 7 days of backups
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# - Logs all operations with timestamps
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# - Handles errors gracefully
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###############################################################################
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# Use 'set -a' to export all variables (important for password with special chars)
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set -a
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# Source environment if it exists
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if [ -f "/mnt/HC_Volume_103713257/tilbudgivern/backend/.env" ]; then
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source "/mnt/HC_Volume_103713257/tilbudgivern/backend/.env"
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fi
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set +a
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set -euo pipefail
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# Configuration
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BACKUP_DIR="/mnt/HC_Volume_103713257/tilbudgivern/backups"
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LOG_FILE="/mnt/HC_Volume_103713257/tilbudgivern/logs/backups/backup.log"
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RETENTION_DAYS=7
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# Use environment variables with defaults
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MYSQL_USER="${DB_BACKUP_USER:-tilbudgivern_service}"
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MYSQL_PASSWORD="${DB_BACKUP_PASSWORD:-}"
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MYSQL_HOST="${DB_BACKUP_HOST:-127.0.0.1}"
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# Ensure directories exist
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mkdir -p "$BACKUP_DIR"
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mkdir -p "$(dirname "$LOG_FILE")"
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# Logging function
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log() {
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echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" | tee -a "$LOG_FILE"
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}
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# Error handler
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error_exit() {
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log "ERROR: $1"
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exit 1
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}
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# Start backup
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log "=========================================="
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log "Starting database backup process"
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log "=========================================="
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# Create timestamp for backup file
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TIMESTAMP=$(date '+%Y%m%d_%H%M%S')
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BACKUP_FILE="$BACKUP_DIR/mariadb_all_databases_${TIMESTAMP}.sql"
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COMPRESSED_FILE="${BACKUP_FILE}.gz"
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# Check if mysqldump is available
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if ! command -v mysqldump &> /dev/null; then
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error_exit "mysqldump command not found. Please ensure MySQL client is installed."
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fi
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# Create mysqldump command
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MYSQLDUMP_CMD="mysqldump --user=$MYSQL_USER"
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if [ -n "$MYSQL_PASSWORD" ]; then
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MYSQLDUMP_CMD="$MYSQLDUMP_CMD --password=$MYSQL_PASSWORD"
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fi
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MYSQLDUMP_CMD="$MYSQLDUMP_CMD --host=$MYSQL_HOST --all-databases --single-transaction --quick --lock-tables=false"
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# Perform backup
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log "Dumping all databases from $MYSQL_HOST..."
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if $MYSQLDUMP_CMD > "$BACKUP_FILE"; then
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UNCOMPRESSED_SIZE=$(du -h "$BACKUP_FILE" | cut -f1)
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log "Database dump completed successfully. Size: $UNCOMPRESSED_SIZE"
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else
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rm -f "$BACKUP_FILE"
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error_exit "Failed to create database dump"
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fi
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# Compress backup
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log "Compressing backup file..."
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if gzip "$BACKUP_FILE"; then
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COMPRESSED_SIZE=$(du -h "$COMPRESSED_FILE" | cut -f1)
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log "Backup compressed successfully. Size: $COMPRESSED_SIZE"
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log "Backup saved to: $COMPRESSED_FILE"
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else
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error_exit "Failed to compress backup file"
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fi
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# Rotate backups - keep only 7 most recent
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log "Rotating backups (keeping $RETENTION_DAYS days)..."
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ROTATION_COUNT=0
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while [ $(find "$BACKUP_DIR" -name "mariadb_all_databases_*.sql.gz" -type f | wc -l) -gt $RETENTION_DAYS ]; do
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OLDEST_BACKUP=$(find "$BACKUP_DIR" -name "mariadb_all_databases_*.sql.gz" -type f -printf '%T@ %p\n' | sort -n | head -1 | cut -d' ' -f2-)
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log "Removing old backup: $(basename "$OLDEST_BACKUP")"
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rm -f "$OLDEST_BACKUP"
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((ROTATION_COUNT++))
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done
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if [ $ROTATION_COUNT -gt 0 ]; then
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log "Rotated $ROTATION_COUNT backup(s)"
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fi
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# Display current backups
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log "Current backups in system:"
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ls -lh "$BACKUP_DIR"/*.gz 2>/dev/null | awk '{print " " $9 " (" $5 ")"}' | tee -a "$LOG_FILE" || log "No backups found"
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# Summary
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log "=========================================="
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log "Backup process completed successfully"
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log "=========================================="
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exit 0
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