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MariaDB 10.11 : バックアップ2023/07/05

 
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


.....
.....

[01] 2023-07-04 19:06:33 Copying /var/lib/mysql//aria_log.00000001 to /home/mariadb_backup/aria_log.00000001
[01] 2023-07-04 19:06:33         ...done
[00] 2023-07-04 19:06:33 Waiting for log copy thread to read lsn 49898
[00] 2023-07-04 19:06:33 Executing FLUSH NO_WRITE_TO_BINLOG ENGINE LOGS...
[00] 2023-07-04 19:06:33 mariabackup: The latest check point (for incremental): '49882'
mariabackup: Stopping log copying thread
[00] 2023-07-04 19:06:33 Executing BACKUP STAGE END
[00] 2023-07-04 19:06:33 All tables unlocked
[00] 2023-07-04 19:06:33 Backup created in directory '/home/mariadb_backup/'
[00] 2023-07-04 19:06:33 Writing backup-my.cnf
[00] 2023-07-04 19:06:33         ...done
[00] 2023-07-04 19:06:33 Writing xtrabackup_info
[00] 2023-07-04 19:06:33         ...done
[00] 2023-07-04 19:06:33 Redo log (from LSN 49882 to 49898) was copied.
[00] 2023-07-04 19:06:33 completed OK!

root@www:~#
ll /home/mariadb_backup

total 12752
-rw-r----- 1 root root   417792 Jul  4 19:06 aria_log.00000001
-rw-r----- 1 root root       52 Jul  4 19:06 aria_log_control
-rw-r----- 1 root root      475 Jul  4 19:06 backup-my.cnf
-rw-r----- 1 root root 12582912 Jul  4 19:06 ibdata1
-rw-r----- 1 root root    12304 Jul  4 19:06 ib_logfile0
drwx------ 2 root root     4096 Jul  4 19:06 mysql
drwx------ 2 root root     4096 Jul  4 19:06 performance_schema
drwx------ 2 root root    12288 Jul  4 19:06 sys
drwx------ 2 root root     4096 Jul  4 19:06 test_database
-rw-r----- 1 root root       73 Jul  4 19:06 xtrabackup_checkpoints
-rw-r----- 1 root root      434 Jul  4 19:06 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 debian debian 704177 Jul 4 19:07 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 10.11.3-MariaDB debian-linux-gnu (x86_64)
[00] 2023-07-04 19:15:31 cd to /root/mariadb_backup/
[00] 2023-07-04 19:15:31 open files limit requested 0, set to 1024
[00] 2023-07-04 19:15:31 Loading plugins from provider_bzip2=provider_bzip2;provider_lz4=provider_lz4;provider_lzma=provider_lzma;provider_lzo=provider_lzo;provider_snappy=provider_snappy
[00] 2023-07-04 19:15:31 Loading plugins
[00] 2023-07-04 19:15:31         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] 2023-07-04 19:15:31         Plugin parameter :  '--prepare'
[00] 2023-07-04 19:15:31         Plugin parameter :  '--target-dir'
[00] 2023-07-04 19:15:31         Plugin parameter :  '/root/mariadb_backup'
[00] 2023-07-04 19:15:31 This target seems to be not prepared yet.
[00] 2023-07-04 19:15:31 mariabackup: using the following InnoDB configuration for recovery:
[00] 2023-07-04 19:15:31 innodb_data_home_dir = .
[00] 2023-07-04 19:15:31 innodb_data_file_path = ibdata1:12M:autoextend
[00] 2023-07-04 19:15:31 innodb_log_group_home_dir = .
[00] 2023-07-04 19:15:31 InnoDB: Using liburing
[00] 2023-07-04 19:15:31 Starting InnoDB instance for recovery.
[00] 2023-07-04 19:15:31 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter)
2023-07-04 19:15:31 0 [Note] InnoDB: Compressed tables use zlib 1.2.13
2023-07-04 19:15:31 0 [Note] InnoDB: Number of transaction pools: 1
2023-07-04 19:15:31 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2023-07-04 19:15:31 0 [Note] InnoDB: Using liburing
2023-07-04 19:15:31 0 [Note] InnoDB: Initializing buffer pool, total size = 100.000MiB, chunk size = 100.000MiB
2023-07-04 19:15:31 0 [Note] InnoDB: Completed initialization of buffer pool
2023-07-04 19:15:31 0 [Note] InnoDB: Buffered log writes (block size=512 bytes)
[00] 2023-07-04 19:15:31 Last binlog file , position 0
[00] 2023-07-04 19:15:31 completed OK!

# リストア実行

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


.....
.....

[01] 2023-07-04 19:16:04 Copying ./sys/x@0024ps_schema_table_statistics_io.frm to /var/lib/mysql/sys/x@0024ps_schema_table_statistics_io.frm
[01] 2023-07-04 19:16:04         ...done
[01] 2023-07-04 19:16:04 Copying ./sys/sys_config.MAI to /var/lib/mysql/sys/sys_config.MAI
[01] 2023-07-04 19:16:04         ...done
[01] 2023-07-04 19:16:04 Copying ./sys/x@0024user_summary_by_file_io.frm to /var/lib/mysql/sys/x@0024user_summary_by_file_io.frm
[01] 2023-07-04 19:16:04         ...done
[01] 2023-07-04 19:16:04 Copying ./sys/x@0024ps_digest_avg_latency_distribution.frm to /var/lib/mysql/sys/x@0024ps_digest_avg_latency_distribution.frm
[01] 2023-07-04 19:16:04         ...done
[00] 2023-07-04 19:16:04 completed OK!

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

root@node01:~#
systemctl start mariadb

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