MySQL Cluster Manager 9.5.0 User Manual
delete site site_name
        The delete site command deletes an existing
        management site. The command does not stop or remove any agents
        making up the deleted site; instead, these agents continue to
        run, and remain available for use in other sites.
      
        The command takes a single argument, the name of the site to be
        deleted. This example shows the deletion of a management site
        named mysite:
      
mcm> delete site mysite;
+---------------------------+
| Command result            |
+---------------------------+
| Site deleted successfully |
+---------------------------+
1 row in set (0.38 sec)
        If the site to be deleted does not exist, the command fails with
        the error Command requires a site to be
        defined. If there are any packages referencing hosts
        belonging to the site, delete site fails with
        the error Packages exist in site
        site_name. The command
        also fails if there are defined any clusters that include hosts
        belonging to the site.
      
The management client must be connected to a site in order to be able to delete it.
          In addition, if you execute a delete site
          command with the --force
          option using one management agent while a different management
          agent is not running, you must remove the
          “missing” management agent's site files
          manually. For more information on site files, see
          Section 3.4, “MySQL Cluster Manager Configuration File”.