MySQL 8.0 : Backup with mysqldump

 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@www ~]# mysqldump -u root -p --lock-all-tables --all-databases --events > mysql_dump.sql

Enter password:

# dump all data without locking but with transaction

# ensured data integrity by [--single-transaction] option

[root@www ~]# mysqldump -u root -p --single-transaction --all-databases --events > mysql_dump.sql

Enter password:

# dump specific database

[root@www ~]# mysqldump -u root -p test_database --single-transaction --events > mysql_dump.sql

Enter password:

[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 -u root -p < mysql_dump.sql

Enter password:

# for dumped data with specific database,

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

[root@localhost ~]# mysql -u root -p test_database < mysql_dump.sql

Enter password:

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