node_cluster

The node_cluster table defines the server computers that make up this iProcess Engine node.

Structure

The node_cluster table has the following structure:

TABLE node_cluster(
logical_machine_id
INTEGER
NOT NULL,
physical_machine_name
VARCHAR(256)
NOT NULL,
master
SMALLINT
NOT NULL,
check_error_files
SMALLINT
NOT NULL,
machine_comment
VARCHAR(256)
)

Column	Description
logical_machine_id	Unique ID for this server.
physical_machine_name	The name of this server (as returned by the UNIX uname command).
master	Flag that defines whether this computer is acting as the master server (1) or, if a node-cluster architecture is being used, as a slave server (0).
check_error_files	Flag that defines whether the Process Sentinels on this server check (1) or do not check (0) for the creation of SWDIR\logs\sw_error and sw_warn files.
machine_comment	Descriptive comment describing this server.

Primary Key

The following primary key is defined for this table.

Key Name	Column(s)
pk_node_cluster	logical_machine_id

Foreign Keys

None.

Indexes

None.

Table Activity

The node_cluster table contains one row for each server computer that is part of the iProcess Engine node.

Rows are added, updated and deleted in the following situations.

A row is...	When...
added	a new server is added to the node, either at installation or by using the SWDIR\util\swadm utility.
updated	a server’s details are updated, using the SWDIR\util\swadm utility.
deleted	a server is removed from the node, using the SWDIR\util\swadm utility.