MySQL Cluster Manager 8.4.1 User Manual
remove hosts {--hosts=|-h }host_list site_name
host_list:
host[, host[, ...]]
This command removes one or more hosts from an existing
management site. It takes as arguments a required option
--hosts (or its
short form
-h),
whose value is a comma-separated list of one or more hosts to be
removed, and the name of the site from which the hosts are to be
removed. A number of limitations apply:
The name of the host to be removed must not be
localhost or
127.0.0.1.
The host to be removed must not have any managed processes
from any clusters assigned to them (remove those processes
first with the
remove
process command); it can have unmanaged
processes assigned to them though (typically,
ndbapi@hostname or
mysqld@*hostname).
There should not be any packages defined with explicit paths pointing to the host to be removed.
A quorum consists of a majority of hosts (i.e., half of
the total number of hosts plus one) must exist for the
site both before and after the host's removal, or it will
not be possible to execute the remove
host command.
You cannot remove the last host from a site; use the
delete site command
instead.
The following command removes two hosts named
tonfisk and flundra from
the management site mysite:
mcm> remove hosts --hosts=tonfisk,flundra mysite;
+----------------------------+
| Command result |
+----------------------------+
| Hosts removed successfully |
+----------------------------+
1 row in set (0.48 sec)