NAME
INIT CLUSTER - Initialize Slony-I cluster
SYNOPSIS
INIT CLUSTER [ID = integer] [COMMENT = string]
DESCRIPTION
Initialize the first node in a new Slony-I replication cluster. The
initialization process consists of creating the cluster namespace,
loading all the base tables, functions, procedures and initializing the
node, using “schemadocinitializelocalnode( integer, text )” [not
available as a man page] and “schemadocenablenode( integer )” [not
available as a man page].
ID The unique, numeric ID number of the node.
COMMENT = ’comment text’
A descriptive text added to the node entry in the table
“sl_node” [not available as a man page].
For this process to work, the SQL scripts of the Slony-I system must be
installed on the DBA workstation (the computer currently executing the
slonik utility), while on the system where the node database is running
the shared objects of the Slony-I system must be installed in the
PostgreSQL library directory. Also the procedural language PL/pgSQL is
assumed to already be installed in the target database.
EXAMPLE
INIT CLUSTER (
ID = 1,
COMMENT = ’Node 1’
);
Note
This command functions very similarly to SLONIK STORE NODE(7),
the difference being that INIT CLUSTER does not need to draw
configuration from other existing nodes.
Note
Be aware that some objects are created that contain the cluster
name as part of their name. (Notably, partial indexes on
sl_log_1 and sl_log_2.) As a result, really long cluster names
are a bad idea, as they can make object names ‘blow up’ past the
typical maximum name length of 63 characters.
LOCKING BEHAVIOUR
This command creates a new namespace and configures tables therein; no
public objects should be locked during the duration of this.
VERSION INFORMATION
This command was introduced in Slony-I 1.0
12 May 2010 SLONIK INIT CLUSTER(7)