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NDB_MGMD(1)                  MySQL Database System                 NDB_MGMD(1)

NAME
       ndb_mgmd - the management server process

SYNOPSIS
       ndb_mgmd options

DESCRIPTION
       The management server is the process that reads the cluster
       configuration file and distributes this information to all nodes in the
       cluster that request it. It also maintains a log of cluster activities.
       Management clients can connect to the management server and check the
       cluster's status.

       It is not strictly necessary to specify a connectstring when starting
       the management server. However, if you are using more than one
       management server, a connectstring should be provided and each node in
       the cluster should specify its node ID explicitly.

       See Section 3.4.2, "The Cluster Connectstring", for information about
       using connectstrings.  Section 5.2, "Command Options for MySQL Cluster
       Processes", describes other options for ndb_mgmd.

       The following files are created or used by ndb_mgmd in its starting
       directory, and are placed in the DataDir as specified in the config.ini
       configuration file. In the list that follows, node_id is the unique
       node identifier.

       o  config.ini is the configuration file for the cluster as a whole.
          This file is created by the user and read by the management server.
          Section 3, "MySQL Cluster Configuration", discusses how to set up
          this file.

       o  ndb_node_id_cluster.log is the cluster events log file. Examples of
          such events include checkpoint startup and completion, node startup
          events, node failures, and levels of memory usage. A complete
          listing of cluster events with descriptions may be found in
          Section 6, "Management of MySQL Cluster".

          When the size of the cluster log reaches one million bytes, the file
          is renamed to ndb_node_id_cluster.log.seq_id, where seq_id is the
          sequence number of the cluster log file. (For example: If files with
          the sequence numbers 1, 2, and 3 already exist, the next log file is
          named using the number 4.)

       o  ndb_node_id_out.log is the file used for stdout and stderr when
          running the management server as a daemon.

       o  ndb_node_id.pid is the process ID file used when running the
          management server as a daemon.

COPYRIGHT
       Copyright 2007-2008 MySQL AB

       This documentation is free software; you can redistribute it and/or
       modify it 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
       MySQL AB (http://www.mysql.com/).

MySQL 5.0                         01/11/2008                       NDB_MGMD(1)

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