CentOS 8
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MariaDB 10.3 : Backup2019/10/31

 
For Backup and Restore MariaDB Data, it's possible to run with [mariabackup].
[1] Generally [mariabackup] tool is installed with MariaDB Server for dependency, but if it has not been installed, Install it first.
[root@www ~]#
dnf -y install mariadb-backup
[2] Run Backup.
For example, get backup under [/home/mariadb_backup].
[root@www ~]#
mkdir /home/mariadb_backup

[root@www ~]#
mariabackup --backup --target-dir /home/mariadb_backup -u root -p password

191030 19:39:26 Connecting to MySQL server host: localhost, user: root, password: set, port: not set, socket: not set
Using server version 10.3.11-MariaDB
mariabackup based on MariaDB server 10.3.11-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 = ./
2019-10-30 19:39:26 0x7f9cd4f3b900 InnoDB: Using Linux native AIO
2019-10-30 19:39:26 0 [Note] InnoDB: Number of pools: 1
.....
.....
191030 19:39:28 [00]        ...done
mariabackup: Redo log (from LSN 1636111 to 1636120) was copied.
191030 19:39:28 completed OK!

[root@www ~]#
ll /home/mariadb_backup

total 12332
-rw-r-----. 1 root root    16384 Oct 30 19:39 aria_log.00000001
-rw-r-----. 1 root root       52 Oct 30 19:39 aria_log_control
-rw-r-----. 1 root root      297 Oct 30 19:39 backup-my.cnf
-rw-r-----. 1 root root      972 Oct 30 19:39 ib_buffer_pool
-rw-r-----. 1 root root 12582912 Oct 30 19:39 ibdata1
-rw-r-----. 1 root root     2560 Oct 30 19:39 ib_logfile0
drwx------. 2 root root     4096 Oct 30 19:39 mysql
drwx------. 2 root root       20 Oct 30 19:39 performance_schema
drwx------. 2 root root       64 Oct 30 19:39 test_database
-rw-r-----. 1 root root      101 Oct 30 19:39 xtrabackup_checkpoints
-rw-r-----. 1 root root      446 Oct 30 19:39 xtrabackup_info
[3] For restoring data from backup on another host, run like follows.
Before restoring, transfer backup data to the target host with [rsync] or [scp] and so on.
# stop MariaDB and remove existing data

[root@node01 ~]#
systemctl stop mariadb

[root@node01 ~]#
rm -rf /var/lib/mysql/*
# transfered backup data

[root@node01 ~]#
ll mariadb_backup.tar.gz

-rw-r--r--. 1 root root 208914 Oct 30 19:39 mariadb_backup.tar.gz
[root@node01 ~]#
tar zxvf mariadb_backup.tar.gz

# run prepare task before restore task (OK if [completed OK])

[root@node01 ~]#
mariabackup --prepare --target-dir /root/mariadb_backup

mariabackup based on MariaDB server 10.3.11-MariaDB Linux (x86_64)
mariabackup: cd to /root/mariadb_backup/
mariabackup: This target seems to be not prepared yet.
mariabackup: using the following InnoDB configuration for recovery:
mariabackup:   innodb_data_home_dir = .
mariabackup:   innodb_data_file_path = ibdata1:12M:autoextend
mariabackup:   innodb_log_group_home_dir = .
2019-10-30 20:03:55 0x7f1537001900 InnoDB: Using Linux native AIO
mariabackup: Starting InnoDB instance for recovery.
mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter)
2019-10-30 20:03:55 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins
2019-10-30 20:03:55 0 [Note] InnoDB: Uses event mutexes
2019-10-30 20:03:55 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-10-30 20:03:55 0 [Note] InnoDB: Number of pools: 1
2019-10-30 20:03:55 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-10-30 20:03:55 0 [Note] InnoDB: Initializing buffer pool, total size = 100M, instances = 1, chunk size = 100M
2019-10-30 20:03:55 0 [Note] InnoDB: Completed initialization of buffer pool
2019-10-30 20:03:55 0 [Note] InnoDB: page_cleaner coordinator priority: -20
2019-10-30 20:03:55 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=1636111
Last binlog file , position 0
191030 20:03:56 completed OK!

# run restore

[root@node01 ~]#
mariabackup --copy-back --target-dir /root/mariadb_backup

mariabackup based on MariaDB server 10.3.11-MariaDB Linux (x86_64)
191031 10:04:51 [01] Copying ibdata1 to /var/lib/mysql/ibdata1
191031 10:04:51 [01]        ...done
.....
.....
191031 10:04:51 [01] Copying ./xtrabackup_binlog_pos_innodb to /var/lib/mysql/xtrabackup_binlog_pos_innodb
191031 10:04:51 [01]        ...done
191031 10:04:51 completed OK!

[root@node01 ~]#
chown -R mysql. /var/lib/mysql

[root@node01 ~]#
systemctl start mariadb

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