Syntax:
{SHOW SLAVE HOSTS | SHOW REPLICAS}

Displays a list of replicas currently registered with the source. From
MySQL 8.0.22, SHOW SLAVE HOSTS is deprecated and the alias SHOW
REPLICAS should be used instead. The statement works in the same way as
before, only the terminology used for the statement and its output has
changed. Both versions of the statement update the same status
variables when used. Please see the documentation for SHOW REPLICAS for
a description of the statement.

URL: https://dev.mysql.com/doc/refman/8.0/en/show-slave-hosts.html

