5.2.4 Other NDB Cluster Configuration Parameters

The listings in this section provide information about parameters used in the [computer], [tcp], and [shm] sections of a config.ini file for configuring NDB Cluster. For detailed descriptions and additional information about individual parameters, see Section 5.3.9, “NDB Cluster TCP/IP Connections”, or Section 5.3.11, “NDB Cluster Shared-Memory Connections”, as appropriate.

The following parameters apply to the config.ini file's [computer] section:

• HostName: Host name or IP address of this computer.

• Id: A unique identifier for this computer.

The following parameters apply to the config.ini file's [tcp] section:

• Checksum: If checksum is enabled, all signals between nodes are checked for errors

• Group: Used for group proximity; smaller value is interpreted as being closer

• NodeId1: ID of node (data node, API node, or management node) on one side of the connection

• NodeId2: ID of node (data node, API node, or management node) on one side of the connection

• NodeIdServer: Set server side of TCP connection

• OverloadLimit: When more than this many unsent bytes are in the send buffer, the connection is considered overloaded.

• PortNumber: Port used for this transporter (DEPRECATED)

• Proxy:

• ReceiveBufferMemory: Bytes of buffer for signals received by this node

• SendBufferMemory: Bytes of TCP buffer for signals sent from this node

• SendSignalId: Sends ID in each signal. Used in trace files. Defaults to true in debug builds.

• TCP_MAXSEG_SIZE: Value used for TCP_MAXSEG

• TCP_RCV_BUF_SIZE: Value used for SO_RCVBUF

• TCP_SND_BUF_SIZE: Value used for SO_SNDBUF

• TcpBind_INADDR_ANY: Bind InAddrAny instead of host name for server part of connection

The following parameters apply to the config.ini file's [shm] section:

• Checksum: If checksum is enabled, all signals between nodes are checked for errors

• Group:

• NodeId1: ID of node (data node, API node, or management node) on one side of the connection

• NodeId2: ID of node (data node, API node, or management node) on one side of the connection

• NodeIdServer: Set server side of SHM connection

• OverloadLimit: When more than this many unsent bytes are in the send buffer, the connection is considered overloaded.

• PortNumber: Port used for this transporter (DEPRECATED)

• SendSignalId: Sends ID in each signal. Used in trace files.

• ShmKey: A shared memory key; when set to 1, this is calculated by NDB

• ShmSize: Size of shared memory segment

• Signum: Signal number to be used for signalling