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Maintenance

Routine Maintenance Tasks

Database Optimization​

The mysqlcheck client performs table maintenance including checking, repairing, optimizing, and analyzing tables. Each table is locked during processing, with read-only locks for check operations.

sql
-- Optimize tables
OPTIMIZE TABLE table_name;
-- Analyze tables for better query optimization
ANALYZE TABLE table_name;
-- Check table integrity
CHECK TABLE table_name;
-- Repair corrupted tables
REPAIR TABLE table_name;

Automated Maintenance​

bash
#!/bin/bash
# Daily maintenance script
mysqlcheck --optimize --all-databases -u root -p
mysqlcheck --analyze --all-databases -u root -p

Backup and Recovery​

Backup Strategies​

bash
# Full database backup
mysqldump --all-databases --single-transaction --routines --triggers > full_backup.sql
# Incremental backup using binary logs
mysqldump --single-transaction --flush-logs --master-data=2 database_name > backup.sql
# Point-in-time recovery
mysqlbinlog --start-datetime="2025-01-01 00:00:00" --stop-datetime="2025-01-01 12:00:00" binlog.000001 > recovery.sql

Recovery Procedures​

sql
-- Restore from backup
SOURCE /path/to/backup.sql;
-- Restore specific database
mysql database_name < backup.sql

Log Management​

sql
-- Configure log retention
SET GLOBAL expire_logs_days = 7;
-- Purge old binary logs
PURGE BINARY LOGS TO 'mysql-bin.000010';
-- Rotate error logs
FLUSH ERROR LOGS;
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