MariaDB 10.5 : バックアップ2021/05/19 |
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。
|
|
[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。 |
[root@www ~]# dnf -y install mariadb-backup
|
[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。 |
[root@www ~]# mkdir /home/mariadb_backup [root@www ~]# mariabackup --backup --target-dir /home/mariadb_backup -u root [00] 2021-05-17 19:53:21 Connecting to MySQL server host: localhost, user: root, password: not set, port: not set, socket: not set [00] 2021-05-17 19:53:21 Using server version 10.5.9-MariaDB mariabackup based on MariaDB server 10.5.9-MariaDB Linux (x86_64) [00] 2021-05-17 19:53:21 uses posix_fadvise(). [00] 2021-05-17 19:53:21 cd to /var/lib/mysql/ [00] 2021-05-17 19:53:21 open files limit requested 0, set to 1024 ..... ..... [00] 2021-05-17 19:53:23 ...done [00] 2021-05-17 19:53:23 Writing xtrabackup_info [00] 2021-05-17 19:53:23 ...done [00] 2021-05-17 19:53:23 Redo log (from LSN 47638 to 47650) was copied. [00] 2021-05-17 19:53:23 completed OK![root@www ~]# ll /home/mariadb_backup total 12340 -rw-r-----. 1 root root 24576 May 17 19:53 aria_log.00000001 -rw-r-----. 1 root root 52 May 17 19:53 aria_log_control -rw-r-----. 1 root root 297 May 17 19:53 backup-my.cnf -rw-r-----. 1 root root 992 May 17 19:53 ib_buffer_pool -rw-r-----. 1 root root 12582912 May 17 19:53 ibdata1 -rw-r-----. 1 root root 2560 May 17 19:53 ib_logfile0 drwx------. 2 root root 4096 May 17 19:53 mysql drwx------. 2 root root 20 May 17 19:53 performance_schema drwx------. 2 root root 64 May 17 19:53 test_database -rw-r-----. 1 root root 73 May 17 19:53 xtrabackup_checkpoints -rw-r-----. 1 root root 429 May 17 19:53 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。 |
# 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 409050 May 17 20:06 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 10.5.9-MariaDB Linux (x86_64) [00] 2021-05-17 20:07:28 cd to /root/mariadb_backup/ [00] 2021-05-17 20:07:28 open files limit requested 0, set to 1024 [00] 2021-05-17 20:07:28 This target seems to be not prepared yet. [00] 2021-05-17 20:07:28 mariabackup: using the following InnoDB configuration for recovery: [00] 2021-05-17 20:07:28 innodb_data_home_dir = . [00] 2021-05-17 20:07:28 innodb_data_file_path = ibdata1:12M:autoextend [00] 2021-05-17 20:07:28 innodb_log_group_home_dir = . [00] 2021-05-17 20:07:28 InnoDB: Using Linux native AIO [00] 2021-05-17 20:07:28 Starting InnoDB instance for recovery. [00] 2021-05-17 20:07:28 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter) 2021-05-17 20:07:28 0 [Note] InnoDB: Uses event mutexes 2021-05-17 20:07:28 0 [Note] InnoDB: Compressed tables use zlib 1.2.11 2021-05-17 20:07:28 0 [Note] InnoDB: Number of pools: 1 2021-05-17 20:07:28 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions 2021-05-17 20:07:28 0 [Note] InnoDB: Using Linux native AIO 2021-05-17 20:07:28 0 [Note] InnoDB: Initializing buffer pool, total size = 104857600, chunk size = 104857600 2021-05-17 20:07:28 0 [Note] InnoDB: Completed initialization of buffer pool 2021-05-17 20:07:28 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=47638,47638 [00] 2021-05-17 20:07:28 Last binlog file , position 0 [00] 2021-05-17 20:07:28 completed OK! # リストア実行 [root@node01 ~]# mariabackup --copy-back --target-dir /root/mariadb_backup mariabackup based on MariaDB server 10.5.9-MariaDB Linux (x86_64) [01] 2021-05-17 20:07:43 Copying ibdata1 to /var/lib/mysql/ibdata1 [01] 2021-05-17 20:07:43 ...done [01] 2021-05-17 20:07:43 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd [01] 2021-05-17 20:07:43 ...done ..... ..... [01] 2021-05-17 20:07:43 ...done [01] 2021-05-17 20:07:43 Copying ./ib_buffer_pool to /var/lib/mysql/ib_buffer_pool [01] 2021-05-17 20:07:43 ...done [01] 2021-05-17 20:07:43 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info [01] 2021-05-17 20:07:43 ...done [00] 2021-05-17 20:07:43 completed OK![root@node01 ~]# chown -R mysql. /var/lib/mysql [root@node01 ~]# systemctl start mariadb |
Sponsored Link |
|