4.6.2.1 Simple backup

To create a backup, use the backup cluster command with the name of the cluster as an argument, similar to what is shown here:

mcm> backup cluster mycluster;
+-------------------------------+
| Command result                |
+-------------------------------+
| Backup completed successfully |
+-------------------------------+
1 row in set (3.31 sec)

backup cluster requires only the name of the cluster to be backed up as an argument; for information about additional options supported by this command, see Section 5.7.2, “The backup cluster Command”. To verify that a new backup of mycluster was created with a unique ID, check the output of list backups, as shown here (where the rows corresponding to the new backup files are indicated with emphasized text):

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        | 1      | tonfisk | 2020-12-04 12:04:15 | 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      |         |
| 4        | 1      | tonfisk | 2020-12-12 14:24:35 | 1      |         | 
| 4        | 2      | tonfisk | 2020-12-12 14:24:35 | 1      |         |
+----------+--------+---------+---------------------+--------+---------+
8 rows in set (0.04 sec)

If you attempt to create a backup of a MySQL NDB Cluster in which each node group does not have at least one data node running, backup cluster fails with the error Backup cannot be performed as processes are stopped in cluster cluster_name.