Documentation Home
MySQL 5.7 Reference Manual
Related Documentation Download this Manual
PDF (US Ltr) - 36.4Mb
PDF (A4) - 36.5Mb
Man Pages (TGZ) - 238.1Kb
Man Pages (Zip) - 349.9Kb
Info (Gzip) - 3.4Mb
Info (Zip) - 3.4Mb
Excerpts from this Manual

MySQL 5.7 Reference Manual  /  ...  /  Upgrading and Downgrading NDB Cluster

21.3.7 Upgrading and Downgrading NDB Cluster

The following sections provide information about upgrading and downgrading NDB Cluster 7.5 and 7.6.

Schema operations, including SQL DDL statements, cannot be performed while any data nodes are restarting, and thus during an online upgrade or downgrade of the cluster. For other information regarding the rolling restart procedure used to perform an online upgrade, see Section 21.6.5, “Performing a Rolling Restart of an NDB Cluster”.

Important

Compatibility between release versions is taken into account only with regard to NDBCLUSTER in this section, and there are additional issues to be considered. See Section 2.11, “Upgrading MySQL”.

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 NDB Cluster software.