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MySQL Cluster Configuration Files
1586
HostName2
Effective Version
Type/Units
Default
Range/Values
MySQL 5.0.0
name or IP address
[none]
...
Restart Type: N
The
HostName1
and
HostName2
parameters can be used to specify specific network interfaces to
be used for a given TCP connection between two nodes. The values used for these parameters can
be hostnames or IP addresses.
•
SendBufferMemory
Effective Version
Type/Units
Default
Range/Values
MySQL 5.0.0
unsigned
256K
64K - 4G
Restart Type: N
TCP transporters use a buffer to store all messages before performing the send call to the operating
system. When this buffer reaches 64KB its contents are sent; these are also sent when a round of
messages have been executed. To handle temporary overload situations it is also possible to define
a bigger send buffer.
The default size of the send buffer is 256 KB; 2MB is recommended in most situations in which it is
necessary to set this parameter. The minimum size is 64 KB; the theoretical maximum is 4 GB.
•
SendSignalId
Effective Version
Type/Units
Default
Range/Values
MySQL 5.0.0
boolean
[see text]
true, false
Restart Type: N
To be able to retrace a distributed message datagram, it is necessary to identify each message.
When this parameter is set to
Y
, message IDs are transported over the network. This feature is
disabled by default in production builds, and enabled in
-debug
builds.
•
Checksum
Effective Version
Type/Units
Default
Range/Values
MySQL 5.0.0
boolean
false
true, false
Restart Type: N
This parameter is a boolean parameter (enabled by setting it to
Y
or
1
, disabled by setting it to
N
or
0
). It is disabled by default. When it is enabled, checksums for all messages are calculated before
they placed in the send buffer. This feature ensures that messages are not corrupted while waiting in
the send buffer, or by the transport mechanism.
•
PortNumber
(OBSOLETE)
This formerly specified the port number to be used for listening for connections from other nodes.
This parameter should no longer be used.
•
ReceiveBufferMemory
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