MariaDB : バックアップ2024/11/11 |
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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] 2024-11-11 09:35:54 Connecting to MariaDB server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2024-11-11 09:35:54 Using server version 10.11.9-MariaDB mariabackup based on MariaDB server 10.11.9-MariaDB Linux (x86_64) [00] 2024-11-11 09:35:54 uses posix_fadvise(). [00] 2024-11-11 09:35:54 cd to /var/lib/mysql/ [00] 2024-11-11 09:35:54 Loading encryption plugin [00] 2024-11-11 09:35:54 open files limit requested 0, set to 1024 [00] 2024-11-11 09:35:54 mariabackup: using the following InnoDB configuration: [00] 2024-11-11 09:35:54 innodb_data_home_dir = [00] 2024-11-11 09:35:54 innodb_data_file_path = ibdata1:12M:autoextend ..... ..... [00] 2024-11-11 09:35:55 Writing backup-my.cnf [00] 2024-11-11 09:35:55 ...done [00] 2024-11-11 09:35:55 Writing xtrabackup_info [00] 2024-11-11 09:35:55 ...done [00] 2024-11-11 09:35:55 Redo log (from LSN 49855 to 49871) was copied. [00] 2024-11-11 09:35:55 completed OK![root@www ~]# ll /home/mariadb_backup total 12744 -rw-r-----. 1 root root 417792 Nov 11 09:35 aria_log.00000001 -rw-r-----. 1 root root 52 Nov 11 09:35 aria_log_control -rw-r-----. 1 root root 505 Nov 11 09:35 backup-my.cnf -rw-r-----. 1 root root 12582912 Nov 11 09:35 ibdata1 -rw-r-----. 1 root root 12304 Nov 11 09:35 ib_logfile0 drwx------. 2 root root 4096 Nov 11 09:35 mysql drwx------. 2 root root 20 Nov 11 09:35 performance_schema drwx------. 2 root root 8192 Nov 11 09:35 sys drwx------. 2 root root 64 Nov 11 09:35 test_database -rw-r-----. 1 root root 97 Nov 11 09:35 xtrabackup_checkpoints -rw-r-----. 1 root root 432 Nov 11 09:35 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 691878 Nov 11 09:41 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 10.11.9-MariaDB Linux (x86_64) [00] 2024-11-11 09:42:11 cd to /root/mariadb_backup/ [00] 2024-11-11 09:42:11 open files limit requested 0, set to 1024 [00] 2024-11-11 09:42:11 Loading encryption plugin from provider_bzip2=provider_bzip2;provider_lz4=provider_lz4;provider_lzma=provider_lzma;provider_lzo=provider_lzo;provider_snappy=provider_snappy [00] 2024-11-11 09:42:11 Loading encryption plugin [00] 2024-11-11 09:42:11 Encryption plugin parameter : '--plugin_load=provider_bzip2=provider_bzip2;provider_lz4=provider_lz4;provider_lzma=provider_lzma;provider_lzo=provider_lzo;provider_snappy=provider_snappy' [00] 2024-11-11 09:42:11 Encryption plugin parameter : '--innodb_encrypt_tables=OFF' [00] 2024-11-11 09:42:11 Encryption plugin parameter : '--prepare' [00] 2024-11-11 09:42:11 Encryption plugin parameter : '--target-dir' [00] 2024-11-11 09:42:11 Encryption plugin parameter : '/root/mariadb_backup' [00] 2024-11-11 09:42:11 This target seems to be not prepared yet. [00] 2024-11-11 09:42:11 mariabackup: using the following InnoDB configuration for recovery: [00] 2024-11-11 09:42:11 innodb_data_home_dir = . [00] 2024-11-11 09:42:11 innodb_data_file_path = ibdata1:12M:autoextend [00] 2024-11-11 09:42:11 innodb_log_group_home_dir = . [00] 2024-11-11 09:42:11 InnoDB: Using Linux native AIO [00] 2024-11-11 09:42:11 Starting InnoDB instance for recovery. [00] 2024-11-11 09:42:11 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2024-11-11 9:42:11 0 [Note] InnoDB: Compressed tables use zlib 1.3.1.zlib-ng 2024-11-11 9:42:11 0 [Note] InnoDB: Number of transaction pools: 1 2024-11-11 9:42:11 0 [Note] InnoDB: Using AVX512 instructions 2024-11-11 9:42:11 0 [Note] InnoDB: Using Linux native AIO 2024-11-11 9:42:11 0 [Note] InnoDB: Initializing buffer pool, total size = 100.000MiB, chunk size = 100.000MiB 2024-11-11 9:42:11 0 [Note] InnoDB: Completed initialization of buffer pool 2024-11-11 9:42:11 0 [Note] InnoDB: Buffered log writes (block size=512 bytes) 2024-11-11 9:42:11 0 [Note] InnoDB: End of log at LSN=49871 [00] 2024-11-11 09:42:11 Last binlog file , position 0 [00] 2024-11-11 09:42:11 completed OK! # リストア実行 [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.11.9-MariaDB Linux (x86_64) [01] 2024-11-11 09:44:12 Copying ./aria_log_control to /var/lib/mysql/aria_log_control [01] 2024-11-11 09:44:12 ...done [01] 2024-11-11 09:44:12 Copying ./aria_log.00000001 to /var/lib/mysql/aria_log.00000001 [01] 2024-11-11 09:44:12 ...done [01] 2024-11-11 09:44:12 Copying ib_logfile0 to /var/lib/mysql/ib_logfile0 [01] 2024-11-11 09:44:12 ...done [01] 2024-11-11 09:44:12 Copying ibdata1 to /var/lib/mysql/./ibdata1 [01] 2024-11-11 09:44:12 ...done ..... ..... [01] 2024-11-11 09:44:12 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2024-11-11 09:44:12 ...done [01] 2024-11-11 09:44:12 Copying ./xtrabackup_binlog_pos_innodb to /var/lib/mysql/xtrabackup_binlog_pos_innodb [01] 2024-11-11 09:44:12 ...done [00] 2024-11-11 09:44:12 completed OK![root@node01 ~]# chown -R mysql:mysql /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
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