| Slony-I 2.2.10 Documentation | ||||
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SLONIK INIT CLUSTER
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(p_comment integer, p_local_node_id text) and schemadocenablenode(p_no_id integer).
- 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.
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, 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.