18.4.3.4 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 7.3.1
  Type or units	string
  Default	[...]
  Range	...
  Restart Type	S

  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

  Version (or later)	NDB 7.3.1
  Type or units	name or IP address
  Default	[...]
  Range	...
  Restart Type	S

  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 18.6 NDB Cluster restart types

Symbol	Restart Type	Description
N	Node	The parameter can be updated using a rolling restart (see Section 18.6.5, “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