ndbinfo: The NDB Cluster Information Database The  config_values  table contains the following columns: ID of the node in the cluster The parameter’s internal ID number Current value of the parameter • node_id • config_param • config_value This table’s  config_param  column and the  config_params  table’s  param_number  column use the same parameter identifiers. By joining the two tables on these columns, you can obtain detailed information about desired node configuration parameters. The query shown here provides the current values for all parameters on each data node in the cluster, ordered by node ID and parameter name: Notes +---------+------------------------------------------+----------------+ | Node Id | Parameter | Value | +---------+------------------------------------------+----------------+ | 2 | Arbitration | 1 | | 2 | ArbitrationTimeout | 7500 | | 2 | BackupDataBufferSize | 16777216 | | 2 | BackupDataDir | /home/jon/data | | 2 | BackupDiskWriteSpeedPct | 50 | | 2 | BackupLogBufferSize | 16777216 | ... | 3 | TotalSendBufferMemory | 0 | | 3 | TransactionBufferMemory | 1048576 | | 3 | TransactionDeadlockDetectionTimeout | 1200 | | 3 | TransactionInactiveTimeout | 4294967039 | | 3 | TwoPassInitialNodeRestartCopy | 0 | | 3 | UndoDataBuffer | 16777216 | | 3 | UndoIndexBuffer | 2097152 | +---------+------------------------------------------+----------------+ 248 rows in set (0.02 sec) The  WHERE  clause filters out parameters whose names begin with a double underscore ( __ ); these parameters are reserved for testing and other internal uses by the NDB developers, and are not intended for use in a production NDB Cluster. You can obtain output that is more specific, more detailed, or both by issuing the proper queries. This example provides all types of available information about the  NodeId ,  NoOfReplicas ,  HostName , DataMemory ,  IndexMemory , and  TotalSendBufferMemory  parameters as currently set for all data nodes in the cluster: Partial output from the previous query when run on a small example cluster used for simple testing: 4533 SELECT v.node_id AS ’Node Id’, p.param_name AS ’Parameter’, v.config_value AS ’Value’ FROM config_values v JOIN config_params p ON v.config_param=p.param_number WHERE p.param_name NOT LIKE ’\_\_%’ ORDER BY v.node_id, p.param_name;