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 23.3.3.10, “NDB Cluster TCP/IP Connections”, or Section 23.3.3.12, “NDB Cluster Shared-Memory Connections”, as appropriate.
The following parameters apply to the config.ini file's [computer] section:
The following parameters apply to the config.ini file's [tcp] section:
AllowUnresolvedHostNames: When false (default), failure by management node to resolve host name results in fatal error; when true, unresolved host names are reported as warnings only.
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 connection.
NodeId2: ID of node (data node, API node, or management node) on one side of connection.
NodeIdServer: Set server side of TCP connection.
OverloadLimit: When more than this many unsent bytes are in send buffer, connection is considered overloaded.
PreferIPVersion: Indicate DNS resolver preference for IP version 4 or 6.
PreSendChecksum: If this parameter and Checksum are both enabled, perform pre-send checksum checks, and check all TCP signals between nodes for errors.
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: 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 connection.
NodeId2: ID of node (data node, API node, or management node) on one side of connection.
NodeIdServer: Set server side of SHM connection.
OverloadLimit: When more than this many unsent bytes are in send buffer, connection is considered overloaded.
PreSendChecksum: If this parameter and Checksum are both enabled, perform pre-send checksum checks, and check all SHM signals between nodes for errors.
SendBufferMemory: Bytes in shared memory buffer for signals sent from this node.
SendSignalId: Sends ID in each signal. Used in trace files.
ShmKey: Shared memory key; when set to 1, this is calculated by NDB.
ShmSpinTime: When receiving, number of microseconds to spin before sleeping.
ShmSize: Size of shared memory segment.
Signum: Signal number to be used for signalling.