4.6.2 Basic MySQL NDB Cluster Backup and Restore Using MySQL Cluster Manager

4.6.2.1 Simple backup

4.6.2.2 Simple complete restore

4.6.2.3 Partial restore—missing images

4.6.2.4 Partial restore—data nodes added

4.6.2.5 Restoring a Backup to a Cluster with Fewer Data Nodes

This section describes backing up and restoring a MySQL NDB Cluster, with examples of complete and partial restore operations. Note that the backup cluster and restore cluster commands work with NDB tables only; tables using other MySQL storage engines (such as InnoDB or MyISAM) are ignored.

For purposes of example, we use a MySQL NDB Cluster named mycluster whose processes and status can be seen here:

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mcm> show status -r mycluster;
+--------+----------+----------+---------+-----------+-----------+
| NodeId | Process  | Host     | Status  | Nodegroup | Package   |
+--------+----------+----------+---------+-----------+-----------+
| 49     | ndb_mgmd | tonfisk  | running |           | mypackage |
| 1      | ndbd     | tonfisk  | running | 0         | mypackage |
| 2      | ndbd     | tonfisk  | running | 0         | mypackage |
| 50     | mysqld   | tonfisk  | running |           | mypackage |
| 51     | mysqld   | tonfisk  | running |           | mypackage |
| 52     | ndbapi   | *tonfisk | added   |           |           |
| 53     | ndbapi   | *tonfisk | added   |           |           |
+--------+----------+----------+---------+-----------+-----------+
7 rows in set (0.08 sec)

You can see whether there are any existing backups of mycluster using the list backups command, as shown here:

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mcm> list backups mycluster;
+----------+--------+---------+---------------------+-------+---------+
| BackupId | NodeId | Host    | Timestamp           | Parts | Comment |
+----------+--------+---------+---------------------+-------+---------+
| 1        | 1      | tonfisk | 2020-12-04 12:03:52 | 1     |         |
| 1        | 2      | tonfisk | 2020-12-04 12:03:52 | 1     |         |
| 2        | 2      | tonfisk | 2020-12-04 12:04:15 | 1     |         |
| 3        | 1      | tonfisk | 2020-12-04 12:17:41 | 1     |         |
| 3        | 2      | tonfisk | 2020-12-04 12:17:41 | 1     |         |
+----------+--------+---------+---------------------+-------+---------+
6 rows in set (0.12 sec)