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MariaDB : बैकअप2024/05/15
 
MariaDB डेटा के बैकअप और पुनर्स्थापना के लिए, [mariabackup] के साथ चलना संभव है।
[1] आमतौर पर [mariabackup] टूल निर्भरता के लिए MariaDB सर्वर के साथ इंस्टॉल किया जाता है, लेकिन अगर यह इंस्टॉल नहीं हुआ है, तो पहले इसे इंस्टॉल करें।
[root@www ~]#
dnf -y install mariadb-backup
[2] बैकअप चलाएँ।
उदाहरण के लिए, [/home/mariadb_backup] के अंतर्गत बैकअप प्राप्त करें।
[root@www ~]#
mkdir /home/mariadb_backup

[root@www ~]#
mariabackup --backup --target-dir /home/mariadb_backup -u root 

[00] 2024-05-15 09:16:41 Connecting to MariaDB server host: localhost, user: root, password: not set, port: not set, socket: not set
[00] 2024-05-15 09:16:41 Using server version 10.11.6-MariaDB
mariabackup based on MariaDB server 10.11.6-MariaDB Linux (x86_64)
[00] 2024-05-15 09:16:41 uses posix_fadvise().
[00] 2024-05-15 09:16:41 cd to /var/lib/mysql/
[00] 2024-05-15 09:16:41 Loading plugins
[00] 2024-05-15 09:16:41 open files limit requested 0, set to 1024
[00] 2024-05-15 09:16:41 mariabackup: using the following InnoDB configuration:
[00] 2024-05-15 09:16:41 innodb_data_home_dir =
.....
.....
[00] 2024-05-15 09:16:42         ...done
[00] 2024-05-15 09:16:42 Writing xtrabackup_info
[00] 2024-05-15 09:16:42         ...done
[00] 2024-05-15 09:16:42 Redo log (from LSN 49855 to 49871) was copied.
[00] 2024-05-15 09:16:42 completed OK!
[root@www ~]#
ll /home/mariadb_backup 

total 12744
-rw-r-----. 1 root root   417792 May 15 09:16 aria_log.00000001
-rw-r-----. 1 root root       52 May 15 09:16 aria_log_control
-rw-r-----. 1 root root      363 May 15 09:16 backup-my.cnf
-rw-r-----. 1 root root 12582912 May 15 09:16 ibdata1
-rw-r-----. 1 root root    12304 May 15 09:16 ib_logfile0
drwx------. 2 root root     4096 May 15 09:16 mysql
drwx------. 2 root root       20 May 15 09:16 performance_schema
drwx------. 2 root root     8192 May 15 09:16 sys
drwx------. 2 root root       64 May 15 09:16 test_database
-rw-r-----. 1 root root       73 May 15 09:16 xtrabackup_checkpoints
-rw-r-----. 1 root root      432 May 15 09:16 xtrabackup_info
[3] किसी अन्य होस्ट पर बैकअप से डेटा पुनर्स्थापित करने के लिए, निम्नानुसार चलाएँ।
पुनर्स्थापित करने से पहले, बैकअप डेटा को [rsync] या [scp] इत्यादि के साथ लक्ष्य होस्ट पर स्थानांतरित करें।
# MariaDB रोकें और मौजूदा डेटा हटा दें

[root@node01 ~]#
systemctl stop mariadb

[root@node01 ~]#
rm -rf /var/lib/mysql/*
# बैकअप डेटा स्थानांतरित किया गया

[root@node01 ~]#
ll mariadb_backup.tar.gz

-rw-r--r--. 1 root root 689544 May 15 09:19 mariadb_backup.tar.gz
[root@node01 ~]#
tar zxvf mariadb_backup.tar.gz

# कार्य पुनर्स्थापित करने से पहले कार्य तैयार करें चलाएँ (ठीक है यदि [completed OK])

[root@node01 ~]#
mariabackup --prepare --target-dir /root/mariadb_backup 

mariabackup based on MariaDB server 10.11.6-MariaDB Linux (x86_64)
[00] 2024-05-15 09:21:33 cd to /root/mariadb_backup/
[00] 2024-05-15 09:21:33 open files limit requested 0, set to 1024
[00] 2024-05-15 09:21:33 Loading plugins from provider_lz4=provider_lz4
[00] 2024-05-15 09:21:33 Loading plugins
[00] 2024-05-15 09:21:33         Plugin parameter :  '--plugin_load=provider_lz4=provider_lz4'
[00] 2024-05-15 09:21:33         Plugin parameter :  '--prepare'
[00] 2024-05-15 09:21:33         Plugin parameter :  '--target-dir'
[00] 2024-05-15 09:21:33         Plugin parameter :  '/root/mariadb_backup'
[00] 2024-05-15 09:21:33 This target seems to be not prepared yet.
[00] 2024-05-15 09:21:33 mariabackup: using the following InnoDB configuration for recovery:
[00] 2024-05-15 09:21:33 innodb_data_home_dir = .
[00] 2024-05-15 09:21:33 innodb_data_file_path = ibdata1:12M:autoextend
[00] 2024-05-15 09:21:33 innodb_log_group_home_dir = .
[00] 2024-05-15 09:21:33 InnoDB: Using Linux native AIO
[00] 2024-05-15 09:21:33 Starting InnoDB instance for recovery.
[00] 2024-05-15 09:21:33 mariabackup: Using 104857600 bytes for buffer pool (set by --use-memory parameter)
2024-05-15  9:21:33 0 [Note] InnoDB: Compressed tables use zlib 1.3.0.zlib-ng
2024-05-15  9:21:33 0 [Note] InnoDB: Number of transaction pools: 1
2024-05-15  9:21:33 0 [Note] InnoDB: Using crc32 + pclmulqdq instructions
2024-05-15  9:21:33 0 [Note] InnoDB: Using Linux native AIO
2024-05-15  9:21:33 0 [Note] InnoDB: Initializing buffer pool, total size = 100.000MiB, chunk size = 100.000MiB
2024-05-15  9:21:33 0 [Note] InnoDB: Completed initialization of buffer pool
2024-05-15  9:21:33 0 [Note] InnoDB: Buffered log writes (block size=512 bytes)
2024-05-15  9:21:33 0 [Note] InnoDB: End of log at LSN=49871
[00] 2024-05-15 09:21:33 Last binlog file , position 0
[00] 2024-05-15 09:21:33 completed OK!
# पुनर्स्थापना चलाएँ

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

mariabackup based on MariaDB server 10.11.6-MariaDB Linux (x86_64)
[01] 2024-05-15 09:23:35 Copying ./aria_log_control to /var/lib/mysql/aria_log_control
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ./aria_log.00000001 to /var/lib/mysql/aria_log.00000001
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ib_logfile0 to /var/lib/mysql/ib_logfile0
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ibdata1 to /var/lib/mysql/./ibdata1
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ./mysql/innodb_table_stats.ibd to /var/lib/mysql/mysql/innodb_table_stats.ibd
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ./mysql/innodb_index_stats.ibd to /var/lib/mysql/mysql/innodb_index_stats.ibd
.....
.....
[01] 2024-05-15 09:23:35 Copying ./sys/x@0024session.frm to /var/lib/mysql/sys/x@0024session.frm
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ./sys/session_ssl_status.frm to /var/lib/mysql/sys/session_ssl_status.frm
[01] 2024-05-15 09:23:35         ...done
[01] 2024-05-15 09:23:35 Copying ./xtrabackup_info to /var/lib/mysql/xtrabackup_info
[root@node01 ~]#
chown -R mysql:mysql /var/lib/mysql

[root@node01 ~]#
systemctl start mariadb

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