MySQL Cluster Tutorial - cdn.oreillystatic.com

It is worth noting that whilst all the data nodes are in this phase and the cluster is not
officially started API nodes will not be allowed to connect, even if they are started, so these
will show 'not connected'.
STATUS
This command gives a more detailed status report for an individual node, as such it
requires a node ID (or the 'ALL' keyword).
For example, during a cluster start:
ndb_mgm> 2 status
Node 2: starting (Last completed phase 3) (mysql-5.1.41 ndb-7.1.2)
With the 'ALL' keyword on a started cluster:
ndb_mgm> all status
Node 2: started (mysql-5.1.41 ndb-7.1.2)
Node 3: started (mysql-5.1.41 ndb-7.1.2)
Note that the 'ALL' keyword only means all data nodes, not all nodes. This command can,
however, be used with any node type.
For example, lets ask for the management node's status:
ndb_mgm> 1 status
Node 1: connected (Version 7.1.2)
STOP
The STOP command is used to shutdown an individual data or management node cleanly or
stop all the data nodes. For example:
ndb_mgm> 2 stop
Node 2: Node shutdown initiated
Node 2: Node shutdown completed.
Node 2 has shutdown.
This command will not let you do an action which will terminate other nodes too
(unless 'ALL' is used). So with node 2 down:
ndb_mgm> 3 stop
Node 3: Node shutdown aborted
Shutdown failed.
* 2002: Stop failed
* Node shutdown would cause system crash: Permanent error: Application error
So with 'ALL STOP' with all data nodes running again:
ndb_mgm> all stop
Executing STOP on all nodes.
Node 2: Cluster shutdown initiated
Node 3: Cluster shutdown initiated
Node 2: Node shutdown completed.
Node 3: Node shutdown completed.
NDB Cluster has shutdown.
RESTART
The RESTART command is very much like STOP but it starts the node again. This command
does not always work as expected, so in general we recommend using with caution. When
it does work you should expect output similar to this:
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