21.3.2.4 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 21.3.3.10, “NDB Cluster TCP/IP Connections”, or Section 21.3.3.12, “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:
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.PortNumber
: Port used for TCP transporter.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.PortNumber
: Port used for SHM transporter.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
: A 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.