MariaDB : バックアップ2024/05/15 |
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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] 2024-05-15 09:16:41 Connecting to MariaDB server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2024-05-15 09:16:41 Using server version 10.11.6-MariaDB mariabackup based on MariaDB server 10.11.6-MariaDB Linux (x86_64) [00] 2024-05-15 09:16:41 uses posix_fadvise(). [00] 2024-05-15 09:16:41 cd to /var/lib/mysql/ [00] 2024-05-15 09:16:41 Loading plugins [00] 2024-05-15 09:16:41 open files limit requested 0, set to 1024 [00] 2024-05-15 09:16:41 mariabackup: using the following InnoDB configuration: [00] 2024-05-15 09:16:41 innodb_data_home_dir = ..... ..... [00] 2024-05-15 09:16:42 ...done [00] 2024-05-15 09:16:42 Writing xtrabackup_info [00] 2024-05-15 09:16:42 ...done [00] 2024-05-15 09:16:42 Redo log (from LSN 49855 to 49871) was copied. [00] 2024-05-15 09:16:42 completed OK![root@www ~]# ll /home/mariadb_backup total 12744 -rw-r-----. 1 root root 417792 May 15 09:16 aria_log.00000001 -rw-r-----. 1 root root 52 May 15 09:16 aria_log_control -rw-r-----. 1 root root 363 May 15 09:16 backup-my.cnf -rw-r-----. 1 root root 12582912 May 15 09:16 ibdata1 -rw-r-----. 1 root root 12304 May 15 09:16 ib_logfile0 drwx------. 2 root root 4096 May 15 09:16 mysql drwx------. 2 root root 20 May 15 09:16 performance_schema drwx------. 2 root root 8192 May 15 09:16 sys drwx------. 2 root root 64 May 15 09:16 test_database -rw-r-----. 1 root root 73 May 15 09:16 xtrabackup_checkpoints -rw-r-----. 1 root root 432 May 15 09:16 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 689544 May 15 09:19 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 10.11.6-MariaDB Linux (x86_64) [00] 2024-05-15 09:21:33 cd to /root/mariadb_backup/ [00] 2024-05-15 09:21:33 open files limit requested 0, set to 1024 [00] 2024-05-15 09:21:33 Loading plugins from provider_lz4=provider_lz4 [00] 2024-05-15 09:21:33 Loading plugins [00] 2024-05-15 09:21:33 Plugin parameter : '--plugin_load=provider_lz4=provider_lz4' [00] 2024-05-15 09:21:33 Plugin parameter : '--prepare' [00] 2024-05-15 09:21:33 Plugin parameter : '--target-dir' [00] 2024-05-15 09:21:33 Plugin parameter : '/root/mariadb_backup' [00] 2024-05-15 09:21:33 This target seems to be not prepared yet. [00] 2024-05-15 09:21:33 mariabackup: using the following InnoDB configuration for recovery: [00] 2024-05-15 09:21:33 innodb_data_home_dir = . [00] 2024-05-15 09:21:33 innodb_data_file_path = ibdata1:12M:autoextend [00] 2024-05-15 09:21:33 innodb_log_group_home_dir = . [00] 2024-05-15 09:21:33 InnoDB: Using Linux native AIO [00] 2024-05-15 09:21:33 Starting InnoDB instance for recovery. [00] 2024-05-15 09:21:33 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2024-05-15 9:21:33 0 [Note] InnoDB: Compressed tables use zlib 1.3.0.zlib-ng 2024-05-15 9:21:33 0 [Note] InnoDB: Number of transaction pools: 1 2024-05-15 9:21:33 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions 2024-05-15 9:21:33 0 [Note] InnoDB: Using Linux native AIO 2024-05-15 9:21:33 0 [Note] InnoDB: Initializing buffer pool, total size = 100.000MiB, chunk size = 100.000MiB 2024-05-15 9:21:33 0 [Note] InnoDB: Completed initialization of buffer pool 2024-05-15 9:21:33 0 [Note] InnoDB: Buffered log writes (block size=512 bytes) 2024-05-15 9:21:33 0 [Note] InnoDB: End of log at LSN=49871 [00] 2024-05-15 09:21:33 Last binlog file , position 0 [00] 2024-05-15 09:21:33 completed OK! # リストア実行 [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.11.6-MariaDB Linux (x86_64) [01] 2024-05-15 09:23:35 Copying ./aria_log_control to /var/lib/mysql/aria_log_control [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ./aria_log.00000001 to /var/lib/mysql/aria_log.00000001 [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ib_logfile0 to /var/lib/mysql/ib_logfile0 [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ibdata1 to /var/lib/mysql/./ibdata1 [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd ..... ..... [01] 2024-05-15 09:23:35 Copying ./sys/x@0024session.frm to /var/lib/mysql/sys/x@0024session.frm [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ./sys/session_ssl_status.frm to /var/lib/mysql/sys/session_ssl_status.frm [01] 2024-05-15 09:23:35 ...done [01] 2024-05-15 09:23:35 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info[root@node01 ~]# chown -R mysql:mysql /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
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