ndb_waiter

SYNOPSIS
       ndb_waiter options

DESCRIPTION
       ndb_waiter repeatedly (each 100 milliseconds) prints out the status of
       all cluster data nodes until either the cluster reaches a given status
       or the --timeout limit is exceeded, then exits. By default, it waits
       for the cluster to achieve STARTED status, in which all nodes have
       started and connected to the cluster. This can be overridden using the
       --no-contact and --not-started options (see Additional Options).

       The node states reported by this utility are as follows:

       o  NO_CONTACT: The node cannot be contacted.

       o  UNKNOWN: The node can be contacted, but its status is not yet known.
          Usually, this means that the node has received a START or RESTART
          command from the management server, but has not yet acted on it.

       o  NOT_STARTED: The node has stopped, but remains in contact with the
          cluster. This is seen when restarting the node using the management
          client's RESTART command.

       o  STARTING: The node's ndbd process has started, but the node has not
          yet joined the cluster.

       o  STARTED: The node is operational, and has joined the cluster.

       o  SHUTTING_DOWN: The node is shutting down.

       o  SINGLE USER MODE: This is shown for all cluster data nodes when the
          cluster is in single user mode.


Usage:

   ndb_waiter [-c connect_string]

Additional Options:

o  --no-contact, -n

   Instead of waiting for the STARTED state, ndb_waiter continues running
   until the cluster reaches NO_CONTACT status before exiting.

o  --not-started

   Instead of waiting for the STARTED state, ndb_waiter continues running
   until the cluster reaches NOT_STARTED status before exiting.

o  --timeout=seconds, -t seconds

   Time to wait. The program exits if the desired state is not achieved within
   State node 4 NO_CONTACT
   Waiting for cluster enter state STARTED
   State node 1 STARTED
   State node 2 UNKNOWN
   State node 3 STARTED
   State node 4 NO_CONTACT
   Waiting for cluster enter state STARTED
   State node 1 STARTED
   State node 2 STARTING
   State node 3 STARTED
   State node 4 NO_CONTACT
   Waiting for cluster enter state STARTED
   State node 1 STARTED
   State node 2 STARTING
   State node 3 STARTED
   State node 4 UNKNOWN
   Waiting for cluster enter state STARTED
   State node 1 STARTED
   State node 2 STARTING
   State node 3 STARTED
   State node 4 STARTING
   Waiting for cluster enter state STARTED
   State node 1 STARTED
   State node 2 STARTED
   State node 3 STARTED
   State node 4 STARTING
   Waiting for cluster enter state STARTED
   State node 1 STARTED
   State node 2 STARTED
   State node 3 STARTED
   State node 4 STARTED
   Waiting for cluster enter state STARTED
   NDBT_ProgramExit: 0 - OK

Note
If no connectstring is specified, then ndb_waiter tries to connect to a
management on localhost, and reports Connecting to mgmsrv at (null).

COPYRIGHT
       Copyright 2007-2008 MySQL AB, 2009 Sun Microsystems, Inc.

       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/.