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21.3.3.4 Defining Computers in an NDB Cluster

The [computer] section has no real significance other than serving as a way to avoid the need of defining host names for each node in the system. All parameters mentioned here are required.

Restart types.  Information about the restart types used by the parameter descriptions in this section is shown in the following table:

Table 21.7 NDB Cluster restart types

Symbol Restart Type Description
N Node The parameter can be updated using a rolling restart (see Section 21.5.5, “Performing a Rolling Restart of an NDB Cluster”)
S System All cluster nodes must be shut down completely, then restarted, to effect a change in this parameter
I Initial Data nodes must be restarted using the --initial option

  • Id

    Table 21.8 This table provides type and value information for the Id computer configuration parameter

    Property Value
    Version (or later) NDB 7.5.0
    Type or units string
    Default [none]
    Range ...
    Restart Type IS

    This is a unique identifier, used to refer to the host computer elsewhere in the configuration file.

    Important

    The computer ID is not the same as the node ID used for a management, API, or data node. Unlike the case with node IDs, you cannot use NodeId in place of Id in the [computer] section of the config.ini file.

  • HostName

    Table 21.9 This table provides type and value information for the HostName computer configuration parameter

    Property Value
    Version (or later) NDB 7.5.0
    Type or units name or IP address
    Default [none]
    Range ...
    Restart Type N

    This is the computer's hostname or IP address.


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