Upgrading And Downgrading Mysql Cluster - Oracle 5.0 Reference Manual

• On the management host
shell> ndb_mgmd -f /var/lib/mysql-cluster/config.ini
• On each of the data node hosts
shell> ndbd
• Use the
ndb_mgm
• On the SQL host (192.168.0.20):
shell> mysqld_safe &
In a production setting, it is usually not desirable to shut down the cluster completely. In many cases,
even when making configuration changes, or performing upgrades to the cluster hardware or software
(or both), which require shutting down individual host machines, it is possible to do so without shutting
down the cluster as a whole by performing a rolling restart of the cluster. For more information about
doing this, see

17.2.6. Upgrading and Downgrading MySQL Cluster

This section provides information about MySQL Cluster software and table file compatibility
between MySQL 5.0 releases with regard to performing upgrades and downgrades as well as a
compatibility matrix and notes. You are expected already to be familiar with installing and configuring
a MySQL Cluster prior to attempting an upgrade or downgrade. See
Configuration".
For information regarding the rolling restart procedure used to perform an online upgrade, see
Section 17.5.5, "Performing a Rolling Restart of a MySQL
The following table shows Cluster upgrade and downgrade compatibility between different releases of
MySQL 5.0:
Upgrading and Downgrading MySQL Cluster
(192.168.0.10
(192.168.0.30
client to verify that both data nodes have started successfully.
Section 17.5.5, "Performing a Rolling Restart of a MySQL
Important
Only compatibility between MySQL versions with regard to
is taken into account in this section, and there are likely other issues to be
considered. As with any other MySQL software upgrade or downgrade, you
are strongly encouraged to review the relevant portions of the MySQL Manual
for the MySQL versions from which and to which you intend to migrate, before
attempting an upgrade or downgrade of the MySQL Cluster software. See
Section 2.19.1, "Upgrading
in our example setup):
and 192.168.0.40):
Cluster".
MySQL".
1544
Cluster".
Section 17.3, "MySQL Cluster
NDBCLUSTER