MariaDB 11.8 : バックアップ2025/11/24 |
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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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www:~ # mkdir /home/mariadb_backup www:~ # mariadb-backup --backup --target-dir /home/mariadb_backup -u root [00] 2025-11-24 10:06:32 Connecting to MariaDB server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2025-11-24 10:06:32 Using server version 11.8.3-MariaDB mariadb-backup based on MariaDB server 11.8.3-MariaDB Linux (x86_64) [00] 2025-11-24 10:06:32 uses posix_fadvise(). [00] 2025-11-24 10:06:32 cd to /var/lib/mysql/ [00] 2025-11-24 10:06:32 open files limit requested 0, set to 1024 [00] 2025-11-24 10:06:32 mariabackup: using the following InnoDB configuration: [00] 2025-11-24 10:06:32 innodb_data_home_dir = [00] 2025-11-24 10:06:32 innodb_data_file_path = ibdata1:12M:autoextend [00] 2025-11-24 10:06:32 innodb_log_group_home_dir = ./ ..... ..... [00] 2025-11-24 10:06:38 Writing backup-my.cnf [00] 2025-11-24 10:06:38 ...done [00] 2025-11-24 10:06:38 Writing mariadb_backup_info [00] 2025-11-24 10:06:38 ...done [00] 2025-11-24 10:06:38 Redo log (from LSN 50466 to 50482) was copied. [00] 2025-11-24 10:06:38 completed OK!www:~ # ll /home/mariadb_backup total 43448 -rw-r-----. 1 root root 417792 Nov 24 10:06 aria_log.00000001 -rw-r-----. 1 root root 52 Nov 24 10:06 aria_log_control -rw-r-----. 1 root root 285 Nov 24 10:06 backup-my.cnf -rw-r-----. 1 root root 12304 Nov 24 10:06 ib_logfile0 -rw-r-----. 1 root root 12582912 Nov 24 10:06 ibdata1 -rw-r-----. 1 root root 97 Nov 24 10:06 mariadb_backup_checkpoints -rw-r-----. 1 root root 432 Nov 24 10:06 mariadb_backup_info drwx------. 1 root root 2718 Nov 24 10:06 mysql drwx------. 1 root root 12 Nov 24 10:06 performance_schema drwx------. 1 root root 6600 Nov 24 10:06 sys drwx------. 1 root root 12 Nov 24 10:06 test drwx------. 1 root root 68 Nov 24 10:06 test_database -rw-r-----. 1 root root 10485760 Nov 24 10:06 undo001 -rw-r-----. 1 root root 10485760 Nov 24 10:06 undo002 -rw-r-----. 1 root root 10485760 Nov 24 10:06 undo003 |
| [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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# 転送したバックアップデータ node01:~ # ll mariadb_backup.tar.gz -rw-r--r--. 1 suse suse 739913 Nov 24 10:09 mariadb_backup.tar.gz 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 node01:~ # mariadb-backup --prepare --target-dir /root/mariadb_backup mariadb-backup based on MariaDB server 11.8.3-MariaDB Linux (x86_64) [00] 2025-11-24 10:11:16 cd to /root/mariadb_backup/ [00] 2025-11-24 10:11:16 open files limit requested 0, set to 1024 [00] 2025-11-24 10:11:16 This target seems to be already prepared. [00] 2025-11-24 10:11:16 mariabackup: using the following InnoDB configuration for recovery: [00] 2025-11-24 10:11:16 innodb_data_home_dir = . [00] 2025-11-24 10:11:16 innodb_data_file_path = ibdata1:12M:autoextend [00] 2025-11-24 10:11:16 innodb_log_group_home_dir = . [00] 2025-11-24 10:11:16 Starting InnoDB instance for recovery. [00] 2025-11-24 10:11:16 mariabackup: Using 100663296 bytes for buffer pool (set by --use-memory parameter) 2025-11-24 10:11:16 0 [Note] InnoDB: Compressed tables use zlib 1.2.13 2025-11-24 10:11:16 0 [Note] InnoDB: Number of transaction pools: 1 2025-11-24 10:11:16 0 [Note] InnoDB: Using AVX512 instructions 2025-11-24 10:11:16 0 [Note] InnoDB: Using Linux native AIO 2025-11-24 10:11:16 0 [Note] InnoDB: innodb_buffer_pool_size_max=96m, innodb_buffer_pool_size=96m 2025-11-24 10:11:16 0 [Note] InnoDB: Completed initialization of buffer pool 2025-11-24 10:11:16 0 [Note] InnoDB: Memory-mapped log (block size=512 bytes) 2025-11-24 10:11:16 0 [Note] InnoDB: End of log at LSN=50482 2025-11-24 10:11:16 0 [Note] InnoDB: Buffered log writes (block size=512 bytes) [00] 2025-11-24 10:11:16 Last binlog file , position 0 [00] 2025-11-24 10:11:16 completed OK! # リストア実行 node01:~ # mariadb-backup --copy-back --target-dir /root/mariadb_backup mariadb-backup based on MariaDB server 11.8.3-MariaDB Linux (x86_64) [01] 2025-11-24 10:11:48 Copying ./aria_log_control to /var/lib/mysql/aria_log_control [01] 2025-11-24 10:11:48 ...done [01] 2025-11-24 10:11:48 Copying ./aria_log.00000001 to /var/lib/mysql/aria_log.00000001 [01] 2025-11-24 10:11:48 ...done [01] 2025-11-24 10:11:48 Copying undo001 to /var/lib/mysql/undo001 [01] 2025-11-24 10:11:48 ...done [01] 2025-11-24 10:11:48 Copying undo002 to /var/lib/mysql/undo002 [01] 2025-11-24 10:11:48 ...done [01] 2025-11-24 10:11:48 Copying undo003 to /var/lib/mysql/undo003 [01] 2025-11-24 10:11:48 ...done [01] 2025-11-24 10:11:48 Copying ib_logfile0 to /var/lib/mysql/ib_logfile0 [01] 2025-11-24 10:11:48 ...done ..... ..... [01] 2025-11-24 10:11:48 Copying ./mariadb_backup_info to /var/lib/mysql/mariadb_backup_info [01] 2025-11-24 10:11:48 ...done [01] 2025-11-24 10:11:48 Copying ./xtrabackup_binlog_pos_innodb to /var/lib/mysql/xtrabackup_binlog_pos_innodb [01] 2025-11-24 10:11:48 ...done [00] 2025-11-24 10:11:48 completed OK!node01:~ # chown -R mysql:mysql /var/lib/mysql node01:~ # restorecon -R /var/lib/mysql node01:~ # systemctl start mariadb |
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