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README.md

SHOW SLAVE HOSTS

Syntax

SHOW SLAVE HOSTS
SHOW REPLICA HOSTS -- from MariaDB 10.5.1

Description

This command is run on the primary and displays a list of replicas that are currently registered with it. Only replicas started with the --report-host=host_name option are visible in this list.

The list is displayed on any server (not just the primary server). The output looks like this:

SHOW SLAVE HOSTS;
+------------+-----------+------+-----------+
| Server_id  | Host      | Port | Master_id |
+------------+-----------+------+-----------+
|  192168010 | iconnect2 | 3306 | 192168011 |
| 1921680101 | athena    | 3306 | 192168011 |
+------------+-----------+------+-----------+
  • Server_id: The unique server ID of the replica server, as configured in the server's option file, or on the command line with --server-id=value.
  • Host: The host name of the replica server, as configured in the server's option file, or on the command line with --report-host=host_name. Note that this can differ from the machine name as configured in the operating system.
  • Port: The port the replica server is listening on.
  • Master_id: The unique server ID of the primary server that the replica server is replicating from.

Some MariaDB and MySQL versions report another variable, rpl_recovery_rank. This variable was never used, and was eventually removed in MariaDB 10.1.2 .

Requires the REPLICATION MASTER ADMIN privilege (>= MariaDB 10.5.2) or the REPLICATION SLAVE privilege (<= MariaDB 10.5.1).

SHOW REPLICA HOSTS

MariaDB starting with 10.5.1

SHOW REPLICA HOSTS is an alias for SHOW SLAVE HOSTS from MariaDB 10.5.1.

See Also