Oracle 5.0 Reference Manual page 1578

The value for this parameter must divide evenly into the number of data nodes in the cluster. For
example, if there are two data nodes, then
and 2/4 both yield fractional values; if there are four data nodes, then
to 1, 2, or 4.
•
DataDir
Effective Version
MySQL 5.0.0
Restart Type: IN
This parameter specifies the directory where trace files, log files, pid files and error logs are placed.
The default is the data node process working directory.
•
FileSystemPath
Effective Version
MySQL 5.0.0
Restart Type: IN
This parameter specifies the directory where all files created for metadata, REDO logs, UNDO logs,
and data files are placed. The default is the directory specified by DataDir.
Note
This directory must exist before the
The recommended directory hierarchy for MySQL Cluster includes /var/lib/mysql-cluster,
under which a directory for the node's file system is created. The name of this subdirectory contains
the node ID. For example, if the node ID is 2, this subdirectory is named ndb_2_fs.
•
BackupDataDir
Effective Version
MySQL 5.0.0
Restart Type: IN
This parameter specifies the directory in which backups are placed.
Important
The string '/BACKUP' is always appended to this value. For example, if
you set the value of
then all backups are stored under /var/lib/cluster-data/BACKUP.
This also means that the effective default backup location is the directory
named
parameter
Data Memory, Index Memory, and String Memory
and
DataMemory IndexMemory
used to store the actual records and their indexes. In setting values for these, it is important to
MySQL Cluster Configuration Files
NoOfReplicas
Type/Units
path
Type/Units
path
Type/Units
path
BackupDataDir
under the location specified by the
BACKUP
[1558].
are parameters specifying the size of memory segments
[ndbd]
1558
must be equal to either 1 or 2, since 2/3
NoOfReplicas
Default
.
Default
DataDir
process is initiated.
ndbd
Default
[see text]
to /var/lib/cluster-data,
FileSystemPath
must be equal
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