- 17.5.1. Summary of MySQL Cluster Start Phases
- 17.5.2. Commands in the MySQL Cluster Management Client
- 17.5.3. Online Backup of MySQL Cluster
- 17.5.4. Event Reports Generated in MySQL Cluster
- 17.5.5. MySQL Cluster Log Messages
- 17.5.6. MySQL Cluster Single User Mode
- 17.5.7. Quick Reference: MySQL Cluster SQL Statements
- 17.5.8. The
ndbinfoMySQL Cluster Information Database
- 17.5.9. MySQL Cluster Security Issues
- 17.5.10. MySQL Cluster Disk Data Tables
- 17.5.11. Adding MySQL Cluster Data Nodes Online
Managing a MySQL Cluster involves a number of tasks, the first of which is to configure and start MySQL Cluster. This is covered in Section 17.3, “MySQL Cluster Configuration”, and Section 17.4, “MySQL Cluster Programs”.
The next few sections cover the management of a running MySQL Cluster.
For information about security issues relating to management and deployment of a MySQL Cluster, see Section 17.5.9, “MySQL Cluster Security Issues”.
There are essentially two methods of actively managing a running MySQL Cluster. The first of these is through the use of commands entered into the management client whereby cluster status can be checked, log levels changed, backups started and stopped, and nodes stopped and started. The second method involves studying the contents of the cluster log
ndb_; this is usually found in the management server's
DataDirdirectory, but this location can be overridden using the
LogDestinationoption—see Section 184.108.40.206, “Defining a MySQL Cluster Management Server”, for details. (Recall that
node_idrepresents the unique identifier of the node whose activity is being logged.) The cluster log contains event reports generated by ndbd. It is also possible to send cluster log entries to a Unix system log.
In MySQL Cluster NDB 7.1.1 and later, detailed information about cluster operations is available in real time via an SQL interface using the
ndbinfodatabase. For more information, see Section 17.5.8, “The
ndbinfoMySQL Cluster Information Database”.