lab27_backup_restore_procedures.txt

RHCE RH254 HANDS-ON LAB: BASIC BACKUP AND RESTORE PROCEDURES
=============================================================

LAB OBJECTIVE:
Implement comprehensive backup and restore procedures for MariaDB/MySQL databases including full, incremental, and point-in-time recovery

PREREQUISITES:
- MariaDB/MySQL server installed and configured
- Root access to RHEL system
- Understanding of database backup concepts

LAB SCENARIO:
Configure automated backup procedures and practice restore operations for database disaster recovery scenarios.

EQUIPMENT NEEDED:
- RHEL system with MariaDB installed
- Sufficient storage space for backups
- Test databases with sample data

LAB TASKS:

PART A: PREPARE BACKUP ENVIRONMENT
-----------------------------------

1: MariaDB Install 
# yum install vim -y
# yum install mariadb-server mariadb -y
# systemctl enable mariadb --now
# systemctl status mariadb
# mysql_secure_installation
# mysql -u root -p


2. Create backup directories:
# mkdir -p /var/backups/mysql/{full,incremental,logs}
# mkdir -p /var/backups/mysql/archive
# chown -R mysql:mysql /var/backups/mysql
# chmod -R 750 /var/backups/mysql

3. Create backup user with minimal privileges:
# mysql -u root -p
   
   MariaDB> CREATE USER 'backup_user'@'localhost' 
   IDENTIFIED BY 'BackupUser123!';
   
   MariaDB> GRANT SELECT, LOCK TABLES, SHOW VIEW, EVENT, TRIGGER, PROCESS 
   ON *.* TO 'backup_user'@'localhost';
   
   MariaDB> GRANT REPLICATION CLIENT ON *.* TO 'backup_user'@'localhost';
   MariaDB> GRANT RELOAD ON *.* TO 'backup_user'@'localhost';
   MariaDB> FLUSH PRIVILEGES;
   MariaDB> EXIT;

4. Configure binary logging for point-in-time recovery:
# vim /etc/my.cnf
   
[mysqld]
# Binary logging for point-in-time recovery
log-bin=/var/lib/mysql/mysql-bin
binlog_format=ROW
expire_logs_days=7
max_binlog_size=100M

# Server ID for replication
server-id=1

5. Restart MariaDB to enable binary logging:
# systemctl restart mariadb
# systemctl status mariadb
# mysql -u root -p -e "SHOW BINARY LOGS;"


PART B: CREATE SAMPLE DATA FOR TESTING
---------------------------------------

1. Create test database with sample data:
# mysql -u root -p
   
   MariaDB> CREATE DATABASE backup_test;
   MariaDB> USE backup_test;
   
   MariaDB> CREATE TABLE customers (
       id INT AUTO_INCREMENT PRIMARY KEY,
       name VARCHAR(100) NOT NULL,
       email VARCHAR(100) UNIQUE,
       phone VARCHAR(20),
       created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP
   );
   
   MariaDB> CREATE TABLE orders (
       id INT AUTO_INCREMENT PRIMARY KEY,
       customer_id INT,
       order_date DATE,
       total_amount DECIMAL(10,2),
       status ENUM('pending', 'completed', 'cancelled'),
       FOREIGN KEY (customer_id) REFERENCES customers(id)
   );

2. Insert sample data:
   MariaDB> INSERT INTO customers (name, email, phone) VALUES
   ('John Doe', 'john@example.com', '555-1234'),
   ('Jane Smith', 'jane@example.com', '555-5678'),
   ('Bob Johnson', 'bob@example.com', '555-9012'),
   ('Alice Brown', 'alice@example.com', '555-3456'),
   ('Charlie Wilson', 'charlie@example.com', '555-7890');
   
   MariaDB> INSERT INTO orders (customer_id, order_date, total_amount, status) VALUES
   (1, '2024-01-15', 150.00, 'completed'),
   (2, '2024-01-16', 75.50, 'completed'),
   (3, '2024-01-17', 200.00, 'pending'),
   (4, '2024-01-18', 125.75, 'completed'),
   (5, '2024-01-19', 300.00, 'pending');

3. Create stored procedures and triggers:
   MariaDB> DELIMITER //
   MariaDB> CREATE PROCEDURE GetCustomerOrders(IN customer_id INT)
   BEGIN
       SELECT * FROM orders WHERE customer_id = customer_id;
   END //
   MariaDB> DELIMITER ;
   
   MariaDB> CREATE TRIGGER update_timestamp 
   BEFORE UPDATE ON customers
   FOR EACH ROW 
   SET NEW.created_at = CURRENT_TIMESTAMP;
   
   MariaDB> EXIT;

PART C: IMPLEMENT FULL BACKUP PROCEDURES
-----------------------------------------

1. Create full backup script:
# vim /usr/local/bin/mysql-full-backup.sh

#!/bin/bash
# MySQL full backup script

BACKUP_DIR="/var/backups/mysql/full"
DB_USER="backup_user"
DB_PASS="BackupUser123!"
DATE=$(date +%Y%m%d_%H%M%S)
BACKUP_FILE="full_backup_$DATE.sql"

echo "Starting full backup at $(date)"

mysqldump -u"$DB_USER" -p"$DB_PASS" --all-databases --single-transaction --routines --triggers --events --flush-logs --master-data=2 --hex-blob > "$BACKUP_DIR/$BACKUP_FILE"


if [ $? -eq 0 ]; then
    echo "Full backup completed successfully"

    gzip "$BACKUP_DIR/$BACKUP_FILE"
    sha256sum "$BACKUP_DIR/$BACKUP_FILE.gz" > "$BACKUP_DIR/$BACKUP_FILE.gz.sha256"

    echo "$(date): Full backup created - $BACKUP_FILE.gz" >> /var/log/mysql-backup.log

    find "$BACKUP_DIR" -name "full_backup_*.sql.gz" -mtime +7 -delete
    find "$BACKUP_DIR" -name "*.sha256" -mtime +7 -delete

    echo "Backup file: $BACKUP_DIR/$BACKUP_FILE.gz"
else
    echo "Full backup failed!"
    echo "$(date): Full backup FAILED" >> /var/log/mysql-backup.log
    exit 1
fi

# chmod +x /usr/local/bin/mysql-full-backup.sh

2. Create database-specific backup script:

# vim /usr/local/bin/mysql-db-backup.sh
   
#!/bin/bash
# MySQL database-specific backup script

DATABASE="$1"
BACKUP_DIR="/var/backups/mysql/full"
DB_USER="backup_user"
DB_PASS="BackupUser123!"
DATE=$(date +%Y%m%d_%H%M%S)

if [ -z "$DATABASE" ]; then
    echo "Usage: $0 <database_name>"
    exit 1
fi

BACKUP_FILE="${DATABASE}_backup_$DATE.sql"

echo "Starting backup of database: $DATABASE"

mysqldump -u"$DB_USER" -p"$DB_PASS" --single-transaction --routines --triggers --events --flush-logs --master-data=2 "$DATABASE" > "$BACKUP_DIR/$BACKUP_FILE"

if [ $? -eq 0 ]; then
    gzip "$BACKUP_DIR/$BACKUP_FILE"
    sha256sum "$BACKUP_DIR/$BACKUP_FILE.gz" > "$BACKUP_DIR/$BACKUP_FILE.gz.sha256"
    echo "Database backup completed: $BACKUP_DIR/$BACKUP_FILE.gz"
else
    echo "Database backup failed!"
    exit 1
fi

   
# chmod +x /usr/local/bin/mysql-db-backup.sh

PART D: IMPLEMENT INCREMENTAL BACKUP PROCEDURES
------------------------------------------------

1. Create binary log backup script:
# vim /usr/local/bin/mysql-binlog-backup.sh
   
#!/bin/bash
# MySQL binary log backup script

BACKUP_DIR="/var/backups/mysql/incremental"
BINLOG_DIR="/var/lib/mysql"
DATE=$(date +%Y%m%d_%H%M%S)

echo "Starting binary log backup at $(date)"

# Flush logs to create a new binary log file
mysql -u root -p -e "FLUSH LOGS;"

# Find binary log files that are not currently being written to
BINLOG_FILES=$(mysql -u root -p -e "SHOW BINARY LOGS;" | awk 'NR>1 {print $1}' | head -n -1)

if [ -n "$BINLOG_FILES" ]; then
    SESSION_DIR="$BACKUP_DIR/binlog_$DATE"
    mkdir -p "$SESSION_DIR"

    for binlog in $BINLOG_FILES; do
        if [ -f "$BINLOG_DIR/$binlog" ]; then
            cp "$BINLOG_DIR/$binlog" "$SESSION_DIR/"
            echo "Backed up: $binlog"
        fi
    done

    ls -la "$SESSION_DIR/" > "$SESSION_DIR/binlog_index.txt"

    tar -czf "$BACKUP_DIR/binlog_$DATE.tar.gz" -C "$BACKUP_DIR" "binlog_$DATE"
    rm -rf "$SESSION_DIR"

    echo "Binary log backup completed: $BACKUP_DIR/binlog_$DATE.tar.gz"

    find "$BACKUP_DIR" -name "binlog_*.tar.gz" -mtime +3 -delete
else
    echo "No binary logs to backup"
fi

   
# chmod +x /usr/local/bin/mysql-binlog-backup.sh

2. Create point-in-time backup script:
# vim /usr/local/bin/mysql-pit-backup.sh
   
#!/bin/bash
# MySQL point-in-time backup preparation

BACKUP_DIR="/var/backups/mysql"
DATE=$(date +%Y%m%d_%H%M%S)

echo "=== Point-in-Time Backup Information ==="
echo "Backup Date: $(date)"
echo

mysql -u root -p -e "SHOW MASTER STATUS;" > "$BACKUP_DIR/master_status_$DATE.txt"
mysql -u root -p -e "SHOW BINARY LOGS;" > "$BACKUP_DIR/binary_logs_$DATE.txt"

 /usr/local/bin/mysql-full-backup.sh
 /usr/local/bin/mysql-binlog-backup.sh

echo "Point-in-time backup preparation completed"
echo "Master status saved to: $BACKUP_DIR/master_status_$DATE.txt"
   
# chmod +x /usr/local/bin/mysql-pit-backup.sh

PART E: IMPLEMENT RESTORE PROCEDURES
-------------------------------------

1. Create full restore script:
# vim /usr/local/bin/mysql-full-restore.sh
   
#!/bin/bash
# MySQL full restore script

BACKUP_FILE="$1"

if [ -z "$BACKUP_FILE" ]; then
    echo "Usage: $0 <backup_file.sql.gz>"
    echo "Available backups:"
    ls -la /var/backups/mysql/full/full_backup_*.sql.gz
    exit 1
fi

if [ ! -f "$BACKUP_FILE" ]; then
    echo "Backup file not found: $BACKUP_FILE"
    exit 1
fi

echo "WARNING: This will restore all databases from backup!"
echo "Backup file: $BACKUP_FILE"
echo "This operation will overwrite existing data!"
read -p "Are you sure you want to continue? (yes/no): " confirm

if [ "$confirm" != "yes" ]; then
    echo "Restore cancelled"
    exit 0
fi

echo "Starting full restore at $(date)"

if [ -f "$BACKUP_FILE.sha256" ]; then
    echo "Verifying backup integrity..."
    if sha256sum -c "$BACKUP_FILE.sha256"; then
        echo "Backup integrity verified"
    else
        echo "Backup integrity check failed!"
        exit 1
    fi
fi

echo "Stopping applications..."
# systemctl stop httpd

echo "Restoring databases..."
zcat "$BACKUP_FILE" | mysql -u root -p

if [ $? -eq 0 ]; then
    echo "Full restore completed successfully at $(date)"
    echo "$(date): Full restore completed from $BACKUP_FILE" >> /var/log/mysql-restore.log
    # systemctl start httpd
else
    echo "Full restore failed!"
    echo "$(date): Full restore FAILED from $BACKUP_FILE" >> /var/log/mysql-restore.log
    exit 1
fi
   
# chmod +x /usr/local/bin/mysql-full-restore.sh

2. Create database-specific restore script:
# vim /usr/local/bin/mysql-db-restore.sh
   
#!/bin/bash
# MySQL database-specific restore script

DATABASE="$1"
BACKUP_FILE="$2"

if [ $# -ne 2 ]; then
    echo "Usage: $0 <database_name> <backup_file.sql.gz>"
    exit 1
fi

if [ ! -f "$BACKUP_FILE" ]; then
    echo "Backup file not found: $BACKUP_FILE"
    exit 1
fi

echo "Restoring database: $DATABASE"
echo "From backup: $BACKUP_FILE"
read -p "Continue? (yes/no): " confirm

if [ "$confirm" != "yes" ]; then
    echo "Restore cancelled"
    exit 0
fi

mysql -u root -p -e "CREATE DATABASE IF NOT EXISTS $DATABASE;"

zcat "$BACKUP_FILE" | mysql -u root -p "$DATABASE"

if [ $? -eq 0 ]; then
    echo "Database restore completed successfully"
else
    echo "Database restore failed!"
    exit 1
fi
   
# chmod +x /usr/local/bin/mysql-db-restore.sh

PART F: IMPLEMENT POINT-IN-TIME RECOVERY
-----------------------------------------

Updated the MySQL PIT recovery script to run non-interactively, start binlog replay from the correct log file and position, and safely handle duplicate DDL using mysql --force, ensuring reliable point-in-time recovery.

1. Create point-in-time recovery script:
# vim /usr/local/bin/mysql-pit-recovery.sh
 
#!/bin/bash
# MySQL point-in-time recovery script 

BACKUP_FILE="$1"
RECOVERY_TIME="$2"

if [ $# -ne 2 ]; then
    echo "Usage: $0 <backup_file.sql.gz> <recovery_time>"
    echo "Recovery time format: 'YYYY-MM-DD HH:MM:SS'"
    exit 1
fi

if [ ! -f "$BACKUP_FILE" ]; then
    echo "Backup file not found: $BACKUP_FILE"
    exit 1
fi

echo "=== Point-in-Time Recovery ==="
echo "Backup file   : $BACKUP_FILE"
echo "Recovery time : $RECOVERY_TIME"
echo

# Non-interactive safe (auto-confirm)
confirm="yes"

if [ "$confirm" != "yes" ]; then
    echo "Recovery cancelled"
    exit 0
fi

echo "Step 1: Restoring from full backup..."
zcat "$BACKUP_FILE" | mysql -u root -p

if [ $? -ne 0 ]; then
    echo "Full backup restore failed!"
    exit 1
fi

echo "Step 2: Applying binary logs up to $RECOVERY_TIME..."

BINLOG_DIR="/var/lib/mysql"
TEMP_DIR="/tmp/pit_recovery_$$"
mkdir -p "$TEMP_DIR"

# Extract binlog file and position from backup
BINLOG_FILE=$(zcat "$BACKUP_FILE" | grep "CHANGE MASTER TO" | head -1 | sed -n "s/.*MASTER_LOG_FILE='\\([^']*\\)'.*/\\1/p")
BINLOG_POS=$(zcat "$BACKUP_FILE" | grep "CHANGE MASTER TO" | head -1 | sed -n "s/.*MASTER_LOG_POS=\\([0-9]*\\).*/\\1/p")

if [ -z "$BINLOG_FILE" ] || [ -z "$BINLOG_POS" ]; then
    echo "Could not determine binary log file or position from backup"
    exit 1
fi

echo "Starting from binary log: $BINLOG_FILE, position: $BINLOG_POS"

# Build recovery SQL from binlogs (correct order)
mysqlbinlog --start-position="$BINLOG_POS" --stop-datetime="$RECOVERY_TIME" "$BINLOG_DIR/$BINLOG_FILE" "$BINLOG_DIR"/mysql-bin.* > "$TEMP_DIR/recovery.sql"

if [ -s "$TEMP_DIR/recovery.sql" ]; then
    mysql -u root -p --force < "$TEMP_DIR/recovery.sql"

    if [ $? -eq 0 ]; then
        echo "Point-in-time recovery completed successfully"
        echo "$(date): PIT recovery completed to $RECOVERY_TIME" >> /var/log/mysql-restore.log
    else
        echo "Binary log application failed!"
        exit 1
    fi
else
    echo "No binary log changes to apply"
fi

rm -rf "$TEMP_DIR"

echo "Recovery completed to point: $RECOVERY_TIME"

     
# chmod +x /usr/local/bin/mysql-pit-recovery.sh

PART G: SCHEDULE AUTOMATED BACKUPS
-----------------------------------

1. Create backup scheduling script:
# vim /usr/local/bin/schedule-backups.sh
   
#!/bin/bash
# Schedule MySQL backups

(crontab -l 2>/dev/null; echo "# MySQL Full Backup - Daily at 2 AM") | crontab -
(crontab -l 2>/dev/null; echo "0 2 * * * /usr/local/bin/mysql-full-backup.sh") | crontab -

(crontab -l 2>/dev/null; echo "# MySQL Binary Log Backup - Every 6 hours") | crontab -
(crontab -l 2>/dev/null; echo "0 */6 * * * /usr/local/bin/mysql-binlog-backup.sh") | crontab -

(crontab -l 2>/dev/null; echo "# MySQL Backup Cleanup - Weekly") | crontab -
(crontab -l 2>/dev/null; echo "0 3 * * 0 find /var/backups/mysql -name '*.gz' -mtime +30 -delete") | crontab -

echo "Backup schedule configured:"
crontab -l | grep mysql

   
# chmod +x /usr/local/bin/schedule-backups.sh

2. Create backup monitoring script:
# vim /usr/local/bin/monitor-backups.sh
   
#!/bin/bash
# Monitor MySQL backup status

BACKUP_DIR="/var/backups/mysql"
LOG_FILE="/var/log/mysql-backup.log"

echo "=== MySQL Backup Status ==="
echo "Date: $(date)"
echo

LATEST_FULL=$(ls -t "$BACKUP_DIR"/full/full_backup_*.sql.gz 2>/dev/null | head -1)
if [ -n "$LATEST_FULL" ]; then
    BACKUP_AGE=$(find "$LATEST_FULL" -mtime +1 2>/dev/null)
    if [ -n "$BACKUP_AGE" ]; then
        echo "WARNING: Latest full backup is older than 24 hours"
        echo "Latest backup: $LATEST_FULL"
    else
        echo "✓ Recent full backup available: $(basename "$LATEST_FULL")"
    fi
else
    echo "✗ No full backups found!"
fi

LATEST_BINLOG=$(ls -t "$BACKUP_DIR"/incremental/binlog_*.tar.gz 2>/dev/null | head -1)
if [ -n "$LATEST_BINLOG" ]; then
    echo "✓ Latest binary log backup: $(basename "$LATEST_BINLOG")"
else
    echo "✗ No binary log backups found!"
fi

if [ -f "$LOG_FILE" ]; then
    ERROR_COUNT=$(grep -c "FAILED" "$LOG_FILE")
    if [ "$ERROR_COUNT" -gt 0 ]; then
        echo "⚠ $ERROR_COUNT backup failures found in log"
        echo "Recent failures:"
        grep "FAILED" "$LOG_FILE" | tail -5
    else
        echo "✓ No backup failures in log"
    fi
fi

BACKUP_SIZE=$(du -sh "$BACKUP_DIR" 2>/dev/null | cut -f1)
echo "Backup directory size: $BACKUP_SIZE"

   
# chmod +x /usr/local/bin/monitor-backups.sh

PART H: TEST BACKUP AND RESTORE PROCEDURES
-------------------------------------------

1. Test full backup:
# /usr/local/bin/mysql-full-backup.sh
# ls -la /var/backups/mysql/full/

2. Test database-specific backup:
# /usr/local/bin/mysql-db-backup.sh backup_test
# ls -la /var/backups/mysql/full/backup_test_*

3. Test binary log backup:
# /usr/local/bin/mysql-binlog-backup.sh
# ls -la /var/backups/mysql/incremental/

4. Create test data for recovery testing:
# mysql -u root -p backup_test
   MariaDB> INSERT INTO customers (name, email, phone) VALUES 
   ('Test User', 'test@recovery.com', '555-TEST');
   MariaDB> SELECT * FROM customers WHERE name = 'Test User';
   MariaDB> EXIT;

5. Test point-in-time recovery:
# RECOVERY_TIME=$(date '+%Y-%m-%d %H:%M:%S')
# echo "Recovery time: $RECOVERY_TIME"
# sleep 60
# mysql -u root -p backup_test -e "DELETE FROM customers WHERE name = 'Test User';"
# BACKUP_FILE=$(ls -t /var/backups/mysql/full/full_backup_*.sql.gz | head -1)
# echo yes | /usr/local/bin/mysql-pit-recovery.sh "$BACKUP_FILE" "$RECOVERY_TIME"
# mysql -u root -p backup_test -e "SELECT * FROM customers;"

PART I: BACKUP VALIDATION AND TESTING
---------------------------------------

1. Create backup validation script:
# vim /usr/local/bin/validate-backup.sh

#!/bin/bash
# Validate MySQL backup integrity

BACKUP_FILE="$1"

if [ -z "$BACKUP_FILE" ]; then
    echo "Usage: $0 <backup_file.sql.gz>"
    exit 1
fi

if [ ! -f "$BACKUP_FILE" ]; then
    echo "Backup file not found: $BACKUP_FILE"
    exit 1
fi

echo "=== Backup Validation ==="
echo "File: $BACKUP_FILE"
echo

if [ -f "$BACKUP_FILE.sha256" ]; then
    echo "Checking file integrity..."
    if sha256sum -c "$BACKUP_FILE.sha256"; then
        echo "✓ File integrity check passed"
    else
        echo "✗ File integrity check failed"
        exit 1
    fi
else
    echo "⚠ No checksum file found"
fi

echo "Testing decompression..."
if zcat "$BACKUP_FILE" | head -10 > /dev/null 2>&1; then
    echo "✓ File decompresses successfully"
else
    echo "✗ File decompression failed"
    exit 1
fi

echo "Checking SQL syntax..."
TEMP_FILE="/tmp/backup_test_$$.sql"
zcat "$BACKUP_FILE" | head -100 > "$TEMP_FILE"

if mysql -u root -p --execute="source $TEMP_FILE" test_validation 2>/dev/null; then
    echo "✓ SQL syntax appears valid"
else
    echo "⚠ SQL syntax check inconclusive"
fi

rm -f "$TEMP_FILE"

echo
echo "Backup Information:"
echo "Size: $(ls -lh "$BACKUP_FILE" | awk '{print $5}')"
echo "Date: $(ls -l "$BACKUP_FILE" | awk '{print $6, $7, $8}')"
   
# chmod +x /usr/local/bin/validate-backup.sh

2. Schedule backup validation:
# crontab -e
# Add:
0 4 * * * /usr/local/bin/validate-backup.sh $(ls -t /var/backups/mysql/full/full_backup_*.sql.gz | head -1)

PART J: BACKUP DOCUMENTATION AND MONITORING
--------------------------------------------

1. Create backup documentation:
# vim /var/backups/mysql/BACKUP_PROCEDURES.txt

MySQL Backup and Restore Procedures
===================================

BACKUP SCHEDULE:
- Full backup: Daily at 2:00 AM
- Binary log backup: Every 6 hours
- Backup retention: 7 days for full, 3 days for incremental

BACKUP LOCATIONS:
- Full backups: /var/backups/mysql/full/
- Incremental backups: /var/backups/mysql/incremental/
- Archive: /var/backups/mysql/archive/

RESTORE PROCEDURES:
1. Full restore:
   /usr/local/bin/mysql-full-restore.sh <backup_file>

2. Database-specific restore:
   /usr/local/bin/mysql-db-restore.sh <database_name> <backup_file>

3. Point-in-Time Recovery (PIT):
   /usr/local/bin/mysql-pit-recovery.sh <backup_file> <recovery_time>

MONITORING:
- Check backup status:
  /usr/local/bin/monitor-backups.sh
- Validate backups:
  /usr/local/bin/validate-backup.sh <backup_file>
- Backup logs:
  /var/log/mysql-backup.log

EMERGENCY CONTACTS:
- Database Administrator: admin@example.com
- System Administrator: sysadmin@example.com


TEST ALL BACKUP PROCEDURES:
---------------------------
# /usr/local/bin/schedule-backups.sh
# /usr/local/bin/monitor-backups.sh
# crontab -l | grep mysql


TROUBLESHOOTING COMMANDS:
------------------------
# tail -f /var/log/mysql-backup.log
# tail -f /var/log/mysql-restore.log
# mysql -u root -p -e "SHOW MASTER STATUS;"
# mysql -u root -p -e "SHOW BINARY LOGS;"
# du -sh /var/backups/mysql/*
# ls -la /var/backups/mysql/full/
  
 
EXPECTED RESULTS:
-----------------
- Automated full and incremental backups working
- Backup validation and integrity checking functional
- Full restore procedures operational
- Point-in-time recovery capability available
- Backup monitoring and alerting active

VALIDATION CHECKLIST:
---------------------
□ Full backup script working
□ Incremental backup script working
□ Restore procedures tested
□ Point-in-time recovery functional
□ Backup scheduling configured
□ Backup validation working
□ Monitoring scripts operational
□ Documentation complete

CLEANUP:
--------
# crontab -e  # Remove backup scheduling entries
# rm /usr/local/bin/mysql-*-backup.sh
# rm /usr/local/bin/mysql-*-restore.sh
# rm /usr/local/bin/mysql-pit-*.sh
# rm /usr/local/bin/schedule-backups.sh
# rm /usr/local/bin/monitor-backups.sh
# rm /usr/local/bin/validate-backup.sh