18.3.3.4 Other MySQL Cluster Configuration Parameters

The summary tables in this section provide information about parameters used in the [computer], [tcp], [shm], and [sci] sections of a config.ini file for configuring MySQL Cluster management nodes. For detailed descriptions and other additional information about individual parameters, see Section 18.3.2.8, “MySQL Cluster TCP/IP Connections”, Section 18.3.2.10, “MySQL Cluster Shared-Memory Connections”, or Section 18.3.2.11, “SCI Transport Connections in MySQL Cluster”, as appropriate.

Restart types.  Changes in MySQL Cluster configuration parameters do not take effect until the cluster is restarted. The type of restart required to change a given parameter is indicated in the summary tables as follows:

For more information about restart types, see Section 18.3.3, “Overview of MySQL Cluster Configuration Parameters”.

Table 18.5 Computer Configuration Parameters

Parameter NameType or UnitsRestart TypeIn Version ... (and later)
Default Value
Minimum/Maximum or Permitted Values

HostName

name or IP addressSNDB 7.2.0
[none]
...

Id

stringISNDB 7.2.0
[none]
...

Table 18.6 TCP Configuration Parameters

Parameter NameType or UnitsRestart TypeIn Version ... (and later)
Default Value
Minimum/Maximum or Permitted Values

Checksum

booleanNNDB 7.2.0
false
true, false

Group

unsignedNNDB 7.2.0
55
0 / 200

NodeId1

numericNNDB 7.2.0
[none]
...

NodeId2

numericNNDB 7.2.0
[none]
...

NodeIdServer

numericNNDB 7.2.0
[none]
...

OverloadLimit

bytesNNDB 7.2.0
0
0 / 4294967039 (0xFFFFFEFF)

PortNumber

unsignedNNDB 7.2.0
[none]
0 / 64K

Proxy

stringNNDB 7.2.0
[none]
...

ReceiveBufferMemory

bytesNNDB 7.2.0
2M
16K / 4294967039 (0xFFFFFEFF)

SendBufferMemory

unsignedNNDB 7.2.0
2M
256K / 4294967039 (0xFFFFFEFF)

SendSignalId

booleanNNDB 7.2.0
[see text]
true, false

TCP_MAXSEG_SIZE

unsignedNNDB 7.2.0
0
0 / 2G

TCP_RCV_BUF_SIZE

unsignedNNDB 7.2.0
0
0 / 2G

TCP_SND_BUF_SIZE

unsignedNNDB 7.2.0
0
0 / 2G

TcpBind_INADDR_ANY

booleanNNDB 7.2.0
false
true, false

Table 18.7 Shared Memory Configuration Parameters

Parameter NameType or UnitsRestart TypeIn Version ... (and later)
Default Value
Minimum/Maximum or Permitted Values

Checksum

booleanNNDB 7.2.0
true
true, false

Group

unsignedNNDB 7.2.0
35
0 / 200

NodeId1

numericNNDB 7.2.0
[none]
...

NodeId2

numericNNDB 7.2.0
[none]
...

NodeIdServer

numericNNDB 7.2.0
[none]
...

OverloadLimit

bytesNNDB 7.2.0
0
0 / 4294967039 (0xFFFFFEFF)

PortNumber

unsignedNNDB 7.2.0
[none]
0 / 64K

SendSignalId

booleanNNDB 7.2.0
false
true, false

ShmKey

unsignedNNDB 7.2.0
[none]
0 / 4294967039 (0xFFFFFEFF)

ShmSize

bytesNNDB 7.2.0
1M
64K / 4294967039 (0xFFFFFEFF)

Signum

unsignedNNDB 7.2.0
[none]
0 / 4294967039 (0xFFFFFEFF)

Table 18.8 SCI Configuration Parameters

Parameter NameType or UnitsRestart TypeIn Version ... (and later)
Default Value
Minimum/Maximum or Permitted Values

Checksum

booleanNNDB 7.2.0
false
true, false

Group

unsignedNNDB 7.2.0
15
0 / 200

Host1SciId0

unsignedNNDB 7.2.0
[none]
0 / 4294967039 (0xFFFFFEFF)

Host1SciId1

unsignedNNDB 7.2.0
0
0 / 4294967039 (0xFFFFFEFF)

Host2SciId0

unsignedNNDB 7.2.0
[none]
0 / 4294967039 (0xFFFFFEFF)

Host2SciId1

unsignedNNDB 7.2.0
0
0 / 4294967039 (0xFFFFFEFF)

NodeId1

numericNNDB 7.2.0
[none]
...

NodeId2

numericNNDB 7.2.0
[none]
...

NodeIdServer

numericNNDB 7.2.0
[none]
...

OverloadLimit

bytesNNDB 7.2.0
0
0 / 4294967039 (0xFFFFFEFF)

PortNumber

unsignedNNDB 7.2.0
[none]
0 / 64K

SendLimit

unsignedNNDB 7.2.0
8K
128 / 32K

SendSignalId

booleanNNDB 7.2.0
true
true, false

SharedBufferSize

unsignedNNDB 7.2.0
10M
64K / 4294967039 (0xFFFFFEFF)