MariaDB 10.5 : バックアップ2021/05/18 |
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MariaDB のデータベースを バックアップ/リストア する際は付属のツールで実行可能です。
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| [1] | バックアップツールをインストールします。 |
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root@www:~# apt -y install mariadb-backup
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| [2] | バックアップを実行します。 例として、[/home/mariadb_backup] ディレクトリ配下にバックアップを取得します。 |
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root@www:~# mkdir /home/mariadb_backup root@www:~# mariabackup --backup --target-dir /home/mariadb_backup -u root ..... ..... [00] 2021-05-18 03:46:52 >> log scanned up to (47740) [00] 2021-05-18 03:46:52 Executing BACKUP STAGE END [00] 2021-05-18 03:46:52 All tables unlocked [00] 2021-05-18 03:46:52 Copying ib_buffer_pool to /home/mariadb_backup/ib_buffer_pool [00] 2021-05-18 03:46:52 ...done [00] 2021-05-18 03:46:52 Backup created in directory '/home/mariadb_backup/' [00] 2021-05-18 03:46:52 Writing backup-my.cnf [00] 2021-05-18 03:46:52 ...done [00] 2021-05-18 03:46:52 Writing xtrabackup_info [00] 2021-05-18 03:46:52 ...done [00] 2021-05-18 03:46:52 Redo log (from LSN 47728 to 47740) was copied. [00] 2021-05-18 03:46:52 completed OK!root@www:~# ll /home/mariadb_backup total 12404 drwxr-xr-x 5 root root 4096 May 18 03:46 ./ drwxr-xr-x 4 root root 4096 May 18 03:46 ../ -rw-r----- 1 root root 73728 May 18 03:46 aria_log.00000001 -rw-r----- 1 root root 52 May 18 03:46 aria_log_control -rw-r----- 1 root root 297 May 18 03:46 backup-my.cnf -rw-r----- 1 root root 998 May 18 03:46 ib_buffer_pool -rw-r----- 1 root root 12582912 May 18 03:46 ibdata1 -rw-r----- 1 root root 2560 May 18 03:46 ib_logfile0 drwx------ 2 root root 4096 May 18 03:46 mysql/ drwx------ 2 root root 4096 May 18 03:46 performance_schema/ drwx------ 2 root root 4096 May 18 03:46 test_database/ -rw-r----- 1 root root 73 May 18 03:46 xtrabackup_checkpoints -rw-r----- 1 root root 449 May 18 03:46 xtrabackup_info |
| [3] | バックアップしたデータを、他ホスト上の MariaDB サーバーへリストアします。 事前にバックアップしたデータを [tar] でまとめるなり [rsync] でそのまま転送する等して、バックアップデータをリストア先サーバーに転送しておいてください。 |
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# MariaDB を停止して既存データは削除 root@node01:~# systemctl stop mariadb root@node01:~# rm -rf /var/lib/mysql/*
# 転送したバックアップデータ root@node01:~# ll mariadb_backup.tar.gz -rw-r--r-- 1 ubuntu ubuntu 412383 May 18 04:04 mariadb_backup.tar.gz root@node01:~# tar zxvf mariadb_backup.tar.gz # リストア事前タスク実行 ([completed OK] であれば OK) root@node01:~# mariabackup --prepare --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.5.10-MariaDB debian-linux-gnu (x86_64) [00] 2021-05-18 04:11:21 cd to /root/mariadb_backup/ [00] 2021-05-18 04:11:21 open files limit requested 0, set to 1024 [00] 2021-05-18 04:11:21 This target seems to be not prepared yet. [00] 2021-05-18 04:11:21 mariabackup: using the following InnoDB configuration for recovery: [00] 2021-05-18 04:11:21 innodb_data_home_dir = . [00] 2021-05-18 04:11:21 innodb_data_file_path = ibdata1:12M:autoextend [00] 2021-05-18 04:11:21 innodb_log_group_home_dir = . [00] 2021-05-18 04:11:21 InnoDB: Using Linux native AIO [00] 2021-05-18 04:11:21 Starting InnoDB instance for recovery. [00] 2021-05-18 04:11:21 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2021-05-18 4:11:21 0 [Note] InnoDB: Uses event mutexes 2021-05-18 4:11:21 0 [Note] InnoDB: Compressed tables use zlib 1.2.11 2021-05-18 4:11:21 0 [Note] InnoDB: Number of pools: 1 2021-05-18 4:11:21 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions 2021-05-18 4:11:21 0 [Note] InnoDB: Using Linux native AIO 2021-05-18 4:11:21 0 [Note] InnoDB: Initializing buffer pool, total size = 104857600, chunk size = 104857600 2021-05-18 4:11:21 0 [Note] InnoDB: Completed initialization of buffer pool 2021-05-18 4:11:21 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=47728,47728 [00] 2021-05-18 04:11:21 Last binlog file , position 0 [00] 2021-05-18 04:11:21 completed OK! # リストア実行 root@node01:~# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.3.22-MariaDB debian-linux-gnu (x86_64) mariabackup based on MariaDB server 10.5.10-MariaDB debian-linux-gnu (x86_64) [01] 2021-05-18 04:11:36 Copying ibdata1 to /var/lib/mysql/ibdata1 [01] 2021-05-18 04:11:36 ...done [01] 2021-05-18 04:11:36 Copying ./ib_buffer_pool to /var/lib/mysql/ib_buffer_pool [01] 2021-05-18 04:11:36 ...done ..... ..... [01] 2021-05-18 04:11:36 Copying ./aria_log_control to /var/lib/mysql/aria_log_control [01] 2021-05-18 04:11:36 ...done [01] 2021-05-18 04:11:36 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2021-05-18 04:11:36 ...done [00] 2021-05-18 04:11:37 completed OK!root@node01:~# chown -R mysql. /var/lib/mysql root@node01:~# systemctl start mariadb |
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