MariaDB 10.7 : バックアップ2022/05/27 |
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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] 2022-05-27 09:25:20 Connecting to MariaDB server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2022-05-27 09:25:20 Using server version 10.7.3-MariaDB mariabackup based on MariaDB server 10.7.3-MariaDB Linux (x86_64) [00] 2022-05-27 09:25:20 uses posix_fadvise(). [00] 2022-05-27 09:25:20 cd to /var/lib/mysql/ [00] 2022-05-27 09:25:20 Loading plugins [00] 2022-05-27 09:25:20 open files limit requested 0, set to 1024 ..... ..... [00] 2022-05-27 09:25:22 ...done [00] 2022-05-27 09:25:22 Writing xtrabackup_info [00] 2022-05-27 09:25:22 ...done [00] 2022-05-27 09:25:22 Redo log (from LSN 44620 to 44632) was copied. [00] 2022-05-27 09:25:22 completed OK![root@www ~]# ll /home/mariadb_backup total 12736 -rw-r-----. 1 root root 417792 May 27 09:25 aria_log.00000001 -rw-r-----. 1 root root 52 May 27 09:25 aria_log_control -rw-r-----. 1 root root 403 May 27 09:25 backup-my.cnf -rw-r-----. 1 root root 962 May 27 09:25 ib_buffer_pool -rw-r-----. 1 root root 12582912 May 27 09:25 ibdata1 -rw-r-----. 1 root root 2560 May 27 09:25 ib_logfile0 drwx------. 2 root root 4096 May 27 09:25 mysql drwx------. 2 root root 20 May 27 09:25 performance_schema drwx------. 2 root root 8192 May 27 09:25 sys drwx------. 2 root root 64 May 27 09:25 test_database -rw-r-----. 1 root root 73 May 27 09:25 xtrabackup_checkpoints -rw-r-----. 1 root root 429 May 27 09:25 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 fedora fedora 540738 May 27 09:46 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 10.7.3-MariaDB Linux (x86_64) [00] 2022-05-27 09:48:10 cd to /root/mariadb_backup/ [00] 2022-05-27 09:48:10 open files limit requested 0, set to 1024 [00] 2022-05-27 09:48:10 Loading plugins from provider_lz4=provider_lz4;provider_lzma=provider_lzma [00] 2022-05-27 09:48:10 Loading plugins [00] 2022-05-27 09:48:10 Plugin parameter : '--plugin_load=provider_lz4=provider_lz4;provider_lzma=provider_lzma' [00] 2022-05-27 09:48:10 Plugin parameter : '--prepare' [00] 2022-05-27 09:48:10 Plugin parameter : '--target-dir' [00] 2022-05-27 09:48:10 Plugin parameter : '/root/mariadb_backup' [00] 2022-05-27 09:48:10 This target seems to be not prepared yet. [00] 2022-05-27 09:48:10 mariabackup: using the following InnoDB configuration for recovery: [00] 2022-05-27 09:48:10 innodb_data_home_dir = . [00] 2022-05-27 09:48:10 innodb_data_file_path = ibdata1:12M:autoextend [00] 2022-05-27 09:48:10 innodb_log_group_home_dir = . [00] 2022-05-27 09:48:10 InnoDB: Using Linux native AIO [00] 2022-05-27 09:48:10 Starting InnoDB instance for recovery. [00] 2022-05-27 09:48:10 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2022-05-27 9:48:10 0 [Note] InnoDB: Compressed tables use zlib 1.2.11 2022-05-27 9:48:10 0 [Note] InnoDB: Number of transaction pools: 1 2022-05-27 9:48:10 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions 2022-05-27 9:48:10 0 [Note] InnoDB: Using Linux native AIO 2022-05-27 9:48:10 0 [Note] InnoDB: Initializing buffer pool, total size = 104857600, chunk size = 104857600 2022-05-27 9:48:10 0 [Note] InnoDB: Completed initialization of buffer pool 2022-05-27 9:48:10 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=44620,44620 [00] 2022-05-27 09:48:10 Last binlog file , position 0 [00] 2022-05-27 09:48:10 completed OK! # リストア実行 [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.7.3-MariaDB Linux (x86_64) [01] 2022-05-27 09:48:34 Copying ibdata1 to /var/lib/mysql/./ibdata1 [01] 2022-05-27 09:48:34 ...done [01] 2022-05-27 09:48:34 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd [01] 2022-05-27 09:48:34 ...done [01] 2022-05-27 09:48:34 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd [01] 2022-05-27 09:48:34 ...done ..... ..... [01] 2022-05-27 09:48:34 Copying ./ib_buffer_pool to /var/lib/mysql/ib_buffer_pool [01] 2022-05-27 09:48:34 ...done [01] 2022-05-27 09:48:34 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2022-05-27 09:48:34 ...done [00] 2022-05-27 09:48:34 completed OK![root@node01 ~]# chown -R mysql. /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
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