Initial Startup of MySQL Cluster
Starting the cluster is not very difficult after it has been configured. Each cluster node process must be started separately, and on the host where it resides. The management node should be started first, followed by the data nodes, and then finally by any SQL nodes:
On the management host, issue the following command from the system shell to start the management node process:
shell> ndb_mgmd -f /var/lib/mysql-cluster/config.ini
Note
ndb_mgmd
must be told where to find its configuration file, using the
-f
or
--config-file
option. (See
Section 4.4, “ndb_mgmd
— The MySQL Cluster Management Server Daemon”
, for details.)
For additional options which can be used with
ndb_mgmd
, seeSection 4.23, “Options Common to MySQL Cluster Programs”
.
On each of the data node hosts, run this command to start the
ndbd
process:
shell> ndbd
If you used RPM files to install MySQL on the cluster host where the SQL node is to reside, you can (and should) use the supplied startup script to start the MySQL server process on the SQL node.
If all has gone well, and the cluster has been set up correctly, the cluster should now be operational. You can test this by invoking the
ndb_mgm
management node client. The output should look like that shown here, although you might see some slight differences in the output depending upon the exact version of MySQL that you are using:
shell> ndb_mgm
-- NDB Cluster -- Management Client --
ndb_mgm> SHOW
Connected to Management Server at: localhost:1186
Cluster Configuration
---------------------
[ndbd(NDB)] 2 node(s)
id=2 @192.168.0.30 (Version: 5.1.41-ndb-6.3.31, Nodegroup: 0, Master)
id=3 @192.168.0.40 (Version: 5.1.41-ndb-6.3.31, Nodegroup: 0)
[ndb_mgmd(MGM)] 1 node(s)
id=1 @192.168.0.10 (Version: 5.1.41-ndb-6.3.31)
[mysqld(API)] 1 node(s)
id=4 @192.168.0.20 (Version:
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