MariaDB 10.3 : バックアップ2021/03/15 |
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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 -p password [00] 2021-03-14 19:10:46 Connecting to MySQL server host: localhost, user: root, password: set, port: not set, socket: not set [00] 2021-03-14 19:10:46 Using server version 10.3.27-MariaDB mariabackup based on MariaDB server 10.3.27-MariaDB Linux (x86_64) [00] 2021-03-14 19:10:46 uses posix_fadvise(). [00] 2021-03-14 19:10:46 cd to /var/lib/mysql/ [00] 2021-03-14 19:10:46 open files limit requested 0, set to 1024 [00] 2021-03-14 19:10:46 mariabackup: using the following InnoDB configuration: [00] 2021-03-14 19:10:46 innodb_data_home_dir = [00] 2021-03-14 19:10:46 innodb_data_file_path = ibdata1:12M:autoextend [00] 2021-03-14 19:10:46 innodb_log_group_home_dir = ./ [00] 2021-03-14 19:10:46 InnoDB: Using Linux native AIO 2021-03-14 19:10:46 0 [Note] InnoDB: Number of pools: 1 ..... ..... [00] 2021-03-14 19:10:49 ...done [00] 2021-03-14 19:10:49 Writing xtrabackup_info [00] 2021-03-14 19:10:49 ...done [00] 2021-03-14 19:10:49 Redo log (from LSN 4422285 to 4422294) was copied. [00] 2021-03-14 19:10:49 completed OK![root@www ~]# ll /home/mariadb_backup total 12336 -rw-r-----. 1 root root 16384 Mar 14 19:10 aria_log.00000001 -rw-r-----. 1 root root 52 Mar 14 19:10 aria_log_control -rw-r-----. 1 root root 324 Mar 14 19:10 backup-my.cnf -rw-r-----. 1 root root 2773 Mar 14 19:10 ib_buffer_pool -rw-r-----. 1 root root 12582912 Mar 14 19:10 ibdata1 -rw-r-----. 1 root root 2560 Mar 14 19:10 ib_logfile0 drwx------. 2 root root 4096 Mar 14 19:10 mysql drwx------. 2 root root 20 Mar 14 19:10 performance_schema drwx------. 2 root root 4096 Mar 14 19:10 wordpress -rw-r-----. 1 root root 77 Mar 14 19:10 xtrabackup_checkpoints -rw-r-----. 1 root root 446 Mar 14 19:10 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 605540 Mar 14 19:19 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 10.3.27-MariaDB Linux (x86_64) [00] 2021-03-14 19:19:53 cd to /root/mariadb_backup/ [00] 2021-03-14 19:19:53 This target seems to be not prepared yet. [00] 2021-03-14 19:19:53 mariabackup: using the following InnoDB configuration for recovery: [00] 2021-03-14 19:19:53 innodb_data_home_dir = . [00] 2021-03-14 19:19:53 innodb_data_file_path = ibdata1:12M:autoextend [00] 2021-03-14 19:19:53 innodb_log_group_home_dir = . [00] 2021-03-14 19:19:53 InnoDB: Using Linux native AIO [00] 2021-03-14 19:19:53 Starting InnoDB instance for recovery. [00] 2021-03-14 19:19:53 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2021-03-14 19:19:53 0 [Note] InnoDB: Mutexes and rw_locks use GCC atomic builtins 2021-03-14 19:19:53 0 [Note] InnoDB: Uses event mutexes 2021-03-14 19:19:53 0 [Note] InnoDB: Compressed tables use zlib 1.2.11 2021-03-14 19:19:53 0 [Note] InnoDB: Number of pools: 1 2021-03-14 19:19:53 0 [Note] InnoDB: Using SSE2 crc32 instructions 2021-03-14 19:19:53 0 [Note] InnoDB: Initializing buffer pool, total size = 100M, instances = 1, chunk size = 100M 2021-03-14 19:19:53 0 [Note] InnoDB: Completed initialization of buffer pool 2021-03-14 19:19:53 0 [Note] InnoDB: page_cleaner coordinator priority: -20 2021-03-14 19:19:53 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=4422285 [00] 2021-03-14 19:19:53 Last binlog file , position 0 [00] 2021-03-14 19:19:54 completed OK! # リストア実行 [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.3.27-MariaDB Linux (x86_64) [01] 2021-03-14 19:20:31 Copying ibdata1 to /var/lib/mysql/ibdata1 [01] 2021-03-14 19:20:31 ...done [01] 2021-03-14 19:20:31 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd [01] 2021-03-14 19:20:31 ...done [01] 2021-03-14 19:20:31 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd [01] 2021-03-14 19:20:31 ...done ..... ..... [01] 2021-03-14 19:20:32 Copying ./ib_buffer_pool to /var/lib/mysql/ib_buffer_pool [01] 2021-03-14 19:20:32 ...done [01] 2021-03-14 19:20:32 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2021-03-14 19:20:32 ...done [00] 2021-03-14 19:20:32 completed OK![root@node01 ~]# chown -R mysql. /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
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