wsrep_cluster_name

wsrep_cluster_name is the dynamic global system variable that sets the logical cluster name; all Galera Cluster nodes must share the same value to form a Primary Component.

Overview

Name for the cluster.

Details

This system variable specifies the logical name of the cluster. Every Cluster Node that connects to each other must have the same logical name in order to form a component or join the Primary Component.

Parameters

Command-line	--wsrep_cluster_name=arg
Configuration file	Supported
Dynamic	Yes
Scope	Global
Data Type	VARCHAR
Product Default Value	my_wsrep_cluster

Examples

Configuration

Set the cluster name using an options file:

[mariadb]
wsrep_provider        = /usr/lib/galera/libgalera_smm.so
wsrep_cluster_name    = example_cluster
wsrep_cluster_address = gcomm://192.0.2.1,192.0.2.2,192.0.2.3

Show Configuration

To view the current cluster name, use the SHOW VARIABLES statement:

SHOW VARIABLES LIKE "wsrep_cluster_name";

+--------------------+-----------------+
| Variable_name      | Value           |
+--------------------+-----------------+
| wsrep_cluster_name | example_cluster |
+--------------------+-----------------+