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25.4.3.4 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.

  • Id

    Version (or later)NDB 8.0.13
    Type or unitsstring
    Default[...]
    Range...
    Restart Type

    Initial System Restart:Requires a complete shutdown of the cluster, wiping and restoring the cluster file system from abackup, and then restarting the cluster. (NDB 8.0.13)

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

    Important

    The computer ID isnot the same as the node ID used for a management, API, or data node. Unlike the case with node IDs, you cannot useNodeId in place ofId in the[computer] section of theconfig.ini file.

  • HostName

    Version (or later)NDB 8.0.13
    Type or unitsname or IP address
    Default[...]
    Range...
    Restart Type

    Node Restart:Requires arolling restart of the cluster. (NDB 8.0.13)

    This is the computer's hostname or IP address.

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

Table 25.8 NDB Cluster restart types

SymbolRestart TypeDescription
NNodeThe parameter can be updated using a rolling restart (seeSection 25.6.5, “Performing a Rolling Restart of an NDB Cluster”)
SSystemAll cluster nodes must be shut down completely, then restarted, to effect a change in this parameter
IInitialData nodes must be restarted using the--initial option