MySQL® Clustering

B Management Commands

You use the management console to communicate with the management daemon, which controls a cluster from the center. You can access the management console from any PC via the binary ndb_mgm, and then ndb_mgm can either pick up its connect string from my.cnf or you can specify it directly (see Appendix A, “MySQL Cluster Binaries”). The management daemon, ndb_mgmd, must be running on the management server in order for any commands issued to the client to take effect (otherwise, you get an error).

Displaying the Status of the Cluster/Controlling Nodes

You will make regular use of several commands to see the status of a cluster, to stop and start nodes, and to check on the memory usage of cluster nodes. The following ...