[root@t4w6 ~]#  mariabackup -u dd --backup  --target-dir /var/backuup

180117 18:09:16 Connecting to MySQL server host: localhost, user: dd, password: not set, port: not set, socket: not set

Using server version 10.2.12-MariaDB

mariabackup based on MariaDB server 10.2.12-MariaDB Linux (x86_64)

mariabackup: uses posix_fadvise().

mariabackup: cd to /var/lib/mysql/

mariabackup: open files limit requested 0, set to 1024

mariabackup: using the following InnoDB configuration:

mariabackup:   innodb_data_home_dir = .

mariabackup:   innodb_data_file_path = ibdata1:12M:autoextend

mariabackup:   innodb_log_group_home_dir = ./

2018-01-17 18:09:16 140109404092544 [Note] InnoDB: Number of pools: 1

180117 18:09:16 >> log scanned up to (1628412)

mariabackup: Generating a list of tablespaces

2018-01-17 18:09:16 140109404092544 [Warning] InnoDB: Allocated tablespace ID 1 for mysql/innodb_table_stats, old maximum was 0

180117 18:09:16 [01] Copying ./ibdata1 to /var/backuup/ibdata1

180117 18:09:16 [01]        ...done

180117 18:09:16 [01] Copying ./mysql/innodb_table_stats.ibd to /var/backuup/mysql/innodb_table_stats.ibd

180117 18:09:16 [01]        ...done

180117 18:09:16 [01] Copying ./mysql/innodb_index_stats.ibd to /var/backuup/mysql/innodb_index_stats.ibd

180117 18:09:16 [01]        ...done

180117 18:09:16 [01] Copying ./mysql/gtid_slave_pos.ibd to /var/backuup/mysql/gtid_slave_pos.ibd

180117 18:09:16 [01]        ...done

180117 18:09:17 [01] Copying ./ff/ff.ibd to /var/backuup/ff/ff.ibd

180117 18:09:17 [01]        ...done

180117 18:09:17 [01] Copying ./ff1/ff1.ibd to /var/backuup/ff1/ff1.ibd

180117 18:09:17 [01]        ...done

180117 18:09:17 >> log scanned up to (1628412)

180117 18:09:17 Executing FLUSH NO_WRITE_TO_BINLOG TABLES...

Error: failed to execute query FLUSH NO_WRITE_TO_BINLOG TABLES: Access denied; you need (at least one of) the RELOAD privilege(s) for this operation

MariaDB [(none)]> select user from mysql.user;

+------+

| user |

+------+

| ff   |

| root |

| root |

|      |

| ff   |

| root |

|      |

| ff   |

| root |

+------+

9 rows in set (0.01 sec)

[root@t4w6 ~]# ls /var/backuup

ff  ff1  ibdata1  ib_logfile0  mysql