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MariaDB 10.11 : バックアップ2024/05/17

 
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をインストールします。
root@www:~#
apt -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] 2024-05-17 00:47:14 Executing BACKUP STAGE END
[00] 2024-05-17 00:47:14 All tables unlocked
[00] 2024-05-17 00:47:14 Backup created in directory '/home/mariadb_backup/'
[00] 2024-05-17 00:47:14 Writing backup-my.cnf
[00] 2024-05-17 00:47:14         ...done
[00] 2024-05-17 00:47:14 Writing xtrabackup_info
[00] 2024-05-17 00:47:14         ...done
[00] 2024-05-17 00:47:14 Redo log (from LSN 49855 to 49871) was copied.
[00] 2024-05-17 00:47:14 completed OK!

root@www:~#
ll /home/mariadb_backup

total 12760
drwxr-xr-x 6 root root     4096 May 17 00:47 ./
drwxr-xr-x 4 root root     4096 May 17 00:47 ../
-rw-r----- 1 root root   417792 May 17 00:47 aria_log.00000001
-rw-r----- 1 root root       52 May 17 00:47 aria_log_control
-rw-r----- 1 root root      475 May 17 00:47 backup-my.cnf
-rw-r----- 1 root root    12304 May 17 00:47 ib_logfile0
-rw-r----- 1 root root 12582912 May 17 00:47 ibdata1
drwx------ 2 root root     4096 May 17 00:47 mysql/
drwx------ 2 root root     4096 May 17 00:47 performance_schema/
drwx------ 2 root root    12288 May 17 00:47 sys/
drwx------ 2 root root     4096 May 17 00:47 test_database/
-rw-r----- 1 root root       97 May 17 00:47 xtrabackup_checkpoints
-rw-r----- 1 root root      441 May 17 00:47 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 root root 700203 May 17 00:49 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 10.11.7-MariaDB debian-linux-gnu (x86_64)
[00] 2024-05-17 00:51:42 cd to /root/mariadb_backup/
[00] 2024-05-17 00:51:42 open files limit requested 0, set to 1024
[00] 2024-05-17 00:51:42 Loading plugins from provider_bzip2=provider_bzip2;provider_lz4=provider_lz4;provider_lzma=provider_lzma;provider_lzo=provider_lzo;provider_snappy=provider_snappy
[00] 2024-05-17 00:51:42 Loading plugins
[00] 2024-05-17 00:51:42         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] 2024-05-17 00:51:42         Plugin parameter :  '--prepare'
[00] 2024-05-17 00:51:42         Plugin parameter :  '--target-dir'
[00] 2024-05-17 00:51:42         Plugin parameter :  '/root/mariadb_backup'
[00] 2024-05-17 00:51:42 This target seems to be not prepared yet.
[00] 2024-05-17 00:51:42 mariabackup: using the following InnoDB configuration for recovery:
[00] 2024-05-17 00:51:42 innodb_data_home_dir = .
[00] 2024-05-17 00:51:42 innodb_data_file_path = ibdata1:12M:autoextend
[00] 2024-05-17 00:51:42 innodb_log_group_home_dir = .
[00] 2024-05-17 00:51:42 InnoDB: Using liburing
[00] 2024-05-17 00:51:42 Starting InnoDB instance for recovery.
[00] 2024-05-17 00:51:42 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter)
2024-05-17  0:51:42 0 [Note] InnoDB: Compressed tables use zlib 1.3
2024-05-17  0:51:42 0 [Note] InnoDB: Number of transaction pools: 1
2024-05-17  0:51:42 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2024-05-17  0:51:42 0 [Note] InnoDB: Using liburing
2024-05-17  0:51:42 0 [Note] InnoDB: Initializing buffer pool, total size = 100.000MiB, chunk size = 100.000MiB
2024-05-17  0:51:42 0 [Note] InnoDB: Completed initialization of buffer pool
2024-05-17  0:51:42 0 [Note] InnoDB: Buffered log writes (block size=512 bytes)
2024-05-17  0:51:42 0 [Note] InnoDB: End of log at LSN=49871
[00] 2024-05-17 00:51:42 Last binlog file , position 0
[00] 2024-05-17 00:51:42 completed OK!

# リストア実行

root@node01:~#
mariabackup --copy-back --target-dir /root/mariadb_backup


.....
.....

[01] 2024-05-17 00:52:30 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd
[01] 2024-05-17 00:52:30         ...done
[01] 2024-05-17 00:52:30 Copying ./mysql/innodb_index_stats.frm to /var/lib/mysql/mysql/innodb_index_stats.frm
[01] 2024-05-17 00:52:30         ...done
[01] 2024-05-17 00:52:30 Copying ./mysql/proc.MAI to /var/lib/mysql/mysql/proc.MAI
[01] 2024-05-17 00:52:30         ...done
[01] 2024-05-17 00:52:30 Copying ./mysql/table_stats.frm to /var/lib/mysql/mysql/table_stats.frm
[01] 2024-05-17 00:52:30         ...done
[00] 2024-05-17 00:52:30 completed OK!

root@node01:~#
chown -R mysql:mysql /var/lib/mysql

root@node01:~#
systemctl start mariadb

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