ndb_mgm(1) MySQL Database System ndb_mgm(1)
NAME
ndb_mgm - the MySQL Cluster management client
SYNOPSIS
ndb_mgm options
DESCRIPTION
The ndb_mgm management client process is actually not needed to run the
cluster. Its value lies in providing a set of commands for checking the
cluster's status, starting backups, and performing other administrative
functions. The management client accesses the management server using a
C API. Advanced users can also employ this API for programming
dedicated management processes to perform tasks similar to those
performed by ndb_mgm.
To start the management client, it is necessary to supply the host name
and port number of the management server:
shell> ndb_mgm [host_name [port_num]]
For example:
shell> ndb_mgm ndb_mgmd.mysql.com 1186
The default host name and port number are localhost and 1186,
respectively.
The following table includes options that are specific to the MySQL
Cluster management client program ndb_mgm. Additional descriptions
follow the table. For options common to all MySQL Cluster programs, see
Section 16.4.2, "Options Common to MySQL Cluster Programs".
o --execute=command, -e command
+-------------+----------------+
|Command-Line | --execute=name |
|Format | |
+-------------+----------------+
| | -e |
+-------------+----------------+
This option can be used to send a command to the MySQL Cluster
management client from the system shell. For example, either of the
following is equivalent to executing SHOW in the management client:
shell> ndb_mgm -e "SHOW"
shell> ndb_mgm --execute="SHOW"
This is analogous to how the --execute or -e option works with the
mysql command-line client. See Section 4.2.3.1, "Using Options on
the Command Line".
Note
If the management client command to be passed using this option
contains any space characters, then the command must be
enclosed in quotation marks. Either single or double quotation
marks may be used. If the management client command contains no
space characters, the quotation marks are optional.
o --try-reconnect=number
+-------------+-------------------+
|Command-Line | --try-reconnect=# |
|Format | |
+-------------+-------------------+
| | -t |
+-------------+-------------------+
| | Permitted Values |
| +---------+---------+
| | Type | boolean |
| +---------+---------+
| | Default | TRUE |
+-------------+---------+---------+
If the connection to the management server is broken, the node
tries to reconnect to it every 5 seconds until it succeeds. By
using this option, it is possible to limit the number of attempts
to number before giving up and reporting an error instead.
Additional information about using ndb_mgm can be found in
Section 16.5.2, "Commands in the MySQL Cluster Management Client".
COPYRIGHT
Copyright (C) 1997, 2012, Oracle and/or its affiliates. All rights
reserved.
This documentation is free software; you can redistribute it and/or
modify it only under the terms of the GNU General Public License as
published by the Free Software Foundation; version 2 of the License.
This documentation is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with the program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see
http://www.gnu.org/licenses/.
SEE ALSO
For more information, please refer to the MySQL Reference Manual, which
may already be installed locally and which is also available online at
http://dev.mysql.com/doc/.
AUTHOR
Oracle Corporation (http://dev.mysql.com/).
MySQL 5.5 03/02/2012 ndb_mgm(1)
mysql 5.5.22 - Generated Fri Apr 6 12:24:50 CDT 2012