MariaDB : Backup2020/05/15 |
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For Backup and Restore MariaDB Data, it's possible to run with [mariabackup].
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| [1] | Generally [mariabackup] tool is installed with MariaDB Server for dependency, but if it has not been installed, Install it first. |
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[root@www ~]# dnf -y install mariadb-backup
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| [2] | Run Backup. For example, get backup under [/home/mariadb_backup]. |
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[root@www ~]# mkdir /home/mariadb_backup [root@www ~]# mariabackup --backup --target-dir /home/mariadb_backup -u root [00] 2020-05-15 01:46:18 Connecting to MySQL server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2020-05-15 01:46:18 Using server version 10.4.12-MariaDB mariabackup based on MariaDB server 10.4.12-MariaDB Linux (x86_64) [00] 2020-05-15 01:46:18 uses posix_fadvise(). [00] 2020-05-15 01:46:18 cd to /var/lib/mysql/ [00] 2020-05-15 01:46:18 open files limit requested 0, set to 1024 [00] 2020-05-15 01:46:18 mariabackup: using the following InnoDB configuration: [00] 2020-05-15 01:46:18 innodb_data_home_dir = ..... ..... [00] 2020-05-15 01:46:20 ...done [00] 2020-05-15 01:46:20 Writing xtrabackup_info [00] 2020-05-15 01:46:20 ...done [00] 2020-05-15 01:46:20 Redo log (from LSN 64639 to 64648) was copied. [00] 2020-05-15 01:46:20 completed OK![root@www ~]# ll /home/mariadb_backup total 12340 -rw-r-----. 1 root root 24576 May 15 01:46 aria_log.00000001 -rw-r-----. 1 root root 52 May 15 01:46 aria_log_control -rw-r-----. 1 root root 324 May 15 01:46 backup-my.cnf -rw-r-----. 1 root root 998 May 15 01:46 ib_buffer_pool -rw-r-----. 1 root root 12582912 May 15 01:46 ibdata1 -rw-r-----. 1 root root 2560 May 15 01:46 ib_logfile0 drwx------. 2 root root 4096 May 15 01:46 mysql drwx------. 2 root root 20 May 15 01:46 performance_schema drwx------. 2 root root 64 May 15 01:46 test_database -rw-r-----. 1 root root 73 May 15 01:46 xtrabackup_checkpoints -rw-r-----. 1 root root 432 May 15 01:46 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. |
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# 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 435763 May 15 01:51 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 10.4.12-MariaDB Linux (x86_64) [00] 2020-05-15 01:55:04 cd to /root/mariadb_backup/ [00] 2020-05-15 01:55:04 This target seems to be not prepared yet. [00] 2020-05-15 01:55:04 mariabackup: using the following InnoDB configuration for recovery: [00] 2020-05-15 01:55:04 innodb_data_home_dir = . [00] 2020-05-15 01:55:04 innodb_data_file_path = ibdata1:12M:autoextend [00] 2020-05-15 01:55:04 innodb_log_group_home_dir = . [00] 2020-05-15 01:55:04 InnoDB: Using Linux native AIO [00] 2020-05-15 01:55:04 Starting InnoDB instance for recovery. [00] 2020-05-15 01:55:04 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2020-05-15 1:55:04 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2020-05-15 1:55:04 0 [Note] InnoDB: Uses event mutexes 2020-05-15 1:55:04 0 [Note] InnoDB: Compressed tables use zlib 1.2.11 2020-05-15 1:55:04 0 [Note] InnoDB: Number of pools: 1 2020-05-15 1:55:04 0 [Note] InnoDB: Using SSE2 crc32 instructions mariabackup: O_TMPFILE is not supported on /var/tmp (disabling future attempts) 2020-05-15 1:55:04 0 [Note] InnoDB: Initializing buffer pool, total size = 100M, instances = 1, chunk size = 100M 2020-05-15 1:55:04 0 [Note] InnoDB: Completed initialization of buffer pool 2020-05-15 1:55:04 0 [Note] InnoDB: page_cleaner coordinator priority: -20 2020-05-15 1:55:04 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=64639 [00] 2020-05-15 01:55:05 Last binlog file , position 0 [00] 2020-05-15 01:55:05 completed OK! # run restore [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.4.12-MariaDB Linux (x86_64) [01] 2020-05-15 01:55:25 Copying ibdata1 to /var/lib/mysql/ibdata1 [01] 2020-05-15 01:55:25 ...done [01] 2020-05-15 01:55:25 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd [01] 2020-05-15 01:55:25 ...done [01] 2020-05-15 01:55:25 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd [01] 2020-05-15 01:55:25 ...done [01] 2020-05-15 01:55:25 Copying ./mysql/transaction_registry.ibd to /var/lib/mysql/mysql/transaction_registry.ibd [01] 2020-05-15 01:55:25 ...done ..... ..... [01] 2020-05-15 01:55:25 Copying ./aria_log.00000001 to /var/lib/mysql/aria_log.00000001 [01] 2020-05-15 01:55:25 ...done [01] 2020-05-15 01:55:25 Copying ./ib_buffer_pool to /var/lib/mysql/ib_buffer_pool [01] 2020-05-15 01:55:25 ...done [01] 2020-05-15 01:55:25 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2020-05-15 01:55:25 ...done [00] 2020-05-15 01:55:25 completed OK![root@node01 ~]# chown -R mysql. /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
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