For most backup operations, the mysqlbackup
command connects to the MySQL server using the credentials
supplied with the
--password options. The specified
user needs certain privileges. You
can either create a new user with a minimal set of privileges,
or use an administrative account such as root. Here are the
privileges required by mysqlbackup:
The minimum privileges for the MySQL user with which mysqlbackup connects to the server are:
RELOADon all databases and tables.
UPDATEon the tables
mysql.backup_history, and also
SELECTand ALTER on
SUPER, to enable and disable logging, and to optimize locking in order to minimize disruption to database processing.
REPLICATION CLIENT, to retrieve the binary log position, which is stored with the backup.
PROCESS, to process DDL statements with the
ALGORITHM = INPLACEclause.
performance_schema.replication_group_members, to know whether the server instance is part of a Group Replication setup and, if so, to gather information on the group members (required by release 4.1.2 and later).
To create a MySQL user (
mysqlbackupin this example) and set the above-mentioned privileges for the user to connect from localhost, issue statements like the following from the
CREATE USER 'mysqlbackup'@'localhost' IDENTIFIED BY 'new-password'; GRANT RELOAD ON *.* TO 'mysqlbackup'@'localhost'; GRANT CREATE, INSERT, DROP, UPDATE ON mysql.backup_progress TO 'mysqlbackup'@'localhost'; GRANT CREATE, INSERT, SELECT, DROP, UPDATE, ALTER ON mysql.backup_history TO 'mysqlbackup'@'localhost'; GRANT REPLICATION CLIENT ON *.* TO 'mysqlbackup'@'localhost'; GRANT SUPER ON *.* TO 'mysqlbackup'@'localhost'; GRANT PROCESS ON *.* TO 'mysqlbackup'@'localhost'; GRANT SELECT ON performance_schema.replication_group_members TO 'mysqlbackup'@'localhost';
Grant these privileges by issuing these sample statements at the mysql client:
GRANT CREATE, INSERT, DROP ON mysql.backup_history_old TO 'mysqlbackup'@'localhost'; GRANT CREATE, INSERT, DROP, ALTER ON mysql.backup_history_new TO 'mysqlbackup'@'localhost';Note
If you are working with a multiprimary Group Replication setting, make sure these privileges are granted on all primary nodes; see also Chapter 8, Using MySQL Enterprise Backup with Group Replication.
These privileges are for the attempt to migrate the
mysql.backup_historytable to a newer format (see Appendix D, Backup History Table Update for details), and they are no longer needed after the first backup operation by MySQL Enterprise Backup 4.1.2 has taken place on the server, by which point they can be revoked.
The following additional privileges are required for using specific features of MySQL Enterprise Backup:
For using transportable tablespaces (TTS) to back up and restore InnoDB tables:
SELECTfor backing up tables.
CREATEfor restoring tables.
DROPfor dropping tables if the restore fails for some reasons.
FILEfor restoring tables in external tablespaces outside of the server's data directory.
Set those additional privileges if you are using the features that require them. To set all of them, issue a statement like the following from the
GRANT LOCK TABLES, SELECT, CREATE, DROP, FILE ON *.* TO 'mysqlbackup'@'localhost'; GRANT CREATE, INSERT, DROP, UPDATE ON mysql.backup_sbt_history TO 'mysqlbackup'@'localhost';
For privileges required for using MySQL Enterprise Backup with a Group Replication setting, see Chapter 8, Using MySQL Enterprise Backup with Group Replication.