MariaDB : バックアップ2023/11/20 |
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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は通常 MariaDB Server と同時にインストールされますが、もしをインストールされていない場合は以下のようにしてインストールします。 |
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[root@www ~]# dnf -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] 2023-11-20 09:45:07 Connecting to server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2023-11-20 09:45:07 Using server version 10.5.22-MariaDB mariabackup based on MariaDB server 10.5.22-MariaDB Linux (x86_64) [00] 2023-11-20 09:45:07 uses posix_fadvise(). [00] 2023-11-20 09:45:07 cd to /var/lib/mysql/ [00] 2023-11-20 09:45:07 open files limit requested 0, set to 1024 [00] 2023-11-20 09:45:07 mariabackup: using the following InnoDB configuration: [00] 2023-11-20 09:45:07 innodb_data_home_dir = [00] 2023-11-20 09:45:07 innodb_data_file_path = ibdata1:12M:autoextend [00] 2023-11-20 09:45:07 innodb_log_group_home_dir = ./ [00] 2023-11-20 09:45:07 InnoDB: Using Linux native AIO ..... ..... [00] 2023-11-20 09:45:09 Writing backup-my.cnf [00] 2023-11-20 09:45:09 ...done [00] 2023-11-20 09:45:09 Writing xtrabackup_info [00] 2023-11-20 09:45:09 ...done [00] 2023-11-20 09:45:09 Redo log (from LSN 47577 to 47589) was copied. [00] 2023-11-20 09:45:09 completed OK![root@www ~]# ll /home/mariadb_backup total 12336 -rw-r-----. 1 root root 24576 Nov 20 09:45 aria_log.00000001 -rw-r-----. 1 root root 52 Nov 20 09:45 aria_log_control -rw-r-----. 1 root root 285 Nov 20 09:45 backup-my.cnf -rw-r-----. 1 root root 12582912 Nov 20 09:45 ibdata1 -rw-r-----. 1 root root 2560 Nov 20 09:45 ib_logfile0 drwx------. 2 root root 4096 Nov 20 09:45 mysql drwx------. 2 root root 20 Nov 20 09:45 performance_schema drwx------. 2 root root 64 Nov 20 09:45 test_database -rw-r-----. 1 root root 73 Nov 20 09:45 xtrabackup_checkpoints -rw-r-----. 1 root root 432 Nov 20 09:45 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 root root 546815 Nov 20 09:47 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 10.5.22-MariaDB Linux (x86_64) [00] 2023-11-20 09:51:51 cd to /root/mariadb_backup/ [00] 2023-11-20 09:51:51 open files limit requested 0, set to 1024 [00] 2023-11-20 09:51:51 This target seems to be not prepared yet. [00] 2023-11-20 09:51:51 mariabackup: using the following InnoDB configuration for recovery: [00] 2023-11-20 09:51:51 innodb_data_home_dir = . [00] 2023-11-20 09:51:51 innodb_data_file_path = ibdata1:12M:autoextend [00] 2023-11-20 09:51:51 innodb_log_group_home_dir = . [00] 2023-11-20 09:51:51 InnoDB: Using Linux native AIO [00] 2023-11-20 09:51:51 Starting InnoDB instance for recovery. [00] 2023-11-20 09:51:51 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2023-11-20 9:51:51 0 [Note] InnoDB: Uses event mutexes 2023-11-20 9:51:51 0 [Note] InnoDB: Compressed tables use zlib 1.2.13 2023-11-20 9:51:51 0 [Note] InnoDB: Number of pools: 1 2023-11-20 9:51:51 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions 2023-11-20 9:51:51 0 [Note] InnoDB: Using Linux native AIO 2023-11-20 9:51:51 0 [Note] InnoDB: Initializing buffer pool, total size = 104857600, chunk size = 104857600 2023-11-20 9:51:51 0 [Note] InnoDB: Completed initialization of buffer pool 2023-11-20 9:51:51 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=47577,47577 [00] 2023-11-20 09:51:51 Last binlog file , position 0 [00] 2023-11-20 09:51:51 completed OK! # リストア実行 [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.5.22-MariaDB Linux (x86_64) [01] 2023-11-20 09:52:17 Copying ./aria_log_control to /var/lib/mysql/aria_log_control [01] 2023-11-20 09:52:17 ...done [01] 2023-11-20 09:52:17 Copying ./aria_log.00000001 to /var/lib/mysql/aria_log.00000001 [01] 2023-11-20 09:52:17 ...done [01] 2023-11-20 09:52:17 Copying ibdata1 to /var/lib/mysql/ibdata1 [01] 2023-11-20 09:52:17 ...done [01] 2023-11-20 09:52:17 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd [01] 2023-11-20 09:52:17 ...done [01] 2023-11-20 09:52:17 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd [01] 2023-11-20 09:52:17 ...done ..... ..... [01] 2023-11-20 09:52:17 Copying ./performance_schema/db.opt to /var/lib/mysql/performance_schema/db.opt [01] 2023-11-20 09:52:17 ...done [01] 2023-11-20 09:52:17 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2023-11-20 09:52:17 ...done [00] 2023-11-20 09:52:17 completed OK![root@node01 ~]# chown -R mysql:mysql /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
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