MySQL 8.0 : Backup with mysqldump
2022/09/28
  	
For Backup and Restore MySQL Data, 


it's possible to run with [mysqldump]. 


[1] 	Run [mysqldump] to take dump data of MySQL.

# lock all tables and dump all data in MySQL
# during dumping data, reading is also locked, so acutually impossible to use Databases

root@dlp:~# mysqldump --lock-all-tables --all-databases --events > mysql_dump.sql

# dump all data without locking but with transaction
# ensured data integrity by [--single-transaction] option

root@dlp:~# mysqldump --single-transaction --all-databases --events > mysql_dump.sql

# dump specific database

root@dlp:~# mysqldump test_database --single-transaction --events > mysql_dump.sql



[2] For restoring data from backup on 


another host, run like follows. 


Before restoring, transfer dump data to the target host with [rsync] or [scp] and so on.
# for all dumped data, simply import a file

root@node01:~# mysql < mysql_dump.sql

# for dumped data with specific database,
# create a empty database first with the same DB name and next, import a file

root@node01:~# mysql test_database < mysql_dump.sql /span>