What should be monitored on a busy Database/MysQL server?
On a busy MySQL server, some key metrics that should be actively monitored include:
- CPU and memory usage
- Disk I/O activity and available storage space
- Network traffic
- Query performance and slow query logs
- Number of active connections
- InnoDB buffer pool usage
- Replication status (if replication is configured)
- Error logs
- Table and index fragmentation
- Key buffer usage
- Thread and process numbers
Additionally, it's also important to monitor the MySQL's process list to see what queries are currently running and identify any possible issues with locking or blocking.
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