MySQL/MariaDB数据库备份与恢复之mysqlpump简单体验

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本文主要介绍 MySQL/MariaDB 数据库 mysqlpump 的简单逻辑导入、导出操作体验，操作还是非常简单易用的。

创建测试用表：
MariaDB

>  create table summary(id int,info char(128));
Query OK, 0 rows affected (0.05 sec)

MariaDB

> show tables;
+—————–+
| Tables_in_music |
+—————–+
| summary         |
| test            |
+—————–+
2 rows in set (0.00 sec)

插入测试数据：
MariaDB

> insert into summary values(1,’Eric Gao is a Oracle DBA’);
Query OK, 1 row affected (0.00 sec)

MariaDB

> insert into summary values(2,’Eric Gao is a MySQL DBA’); 
Query OK, 1 row affected (0.05 sec)

MariaDB

> insert into summary values(3,’Eric Gao is a AIX  SA’); 
Query OK, 1 row affected (0.00 sec)

MariaDB

> insert into summary values(4,’Eric Gao is a Linux  SA’); 
Query OK, 1 row affected (0.01 sec)

MariaDB

> select * from summary;
+——+————————–+
| id   | info                     |
+——+————————–+
|    1 | Eric Gao is a Oracle DBA |
|    2 | Eric Gao is a MySQL DBA  |
|    3 | Eric Gao is a AIX  SA    |
|    4 | Eric Gao is a Linux  SA  |
+——+————————–+
4 rows in set (0.00 sec)

执行 mysqldump 备份：
[root@localhost ~]# mysqldump -u root –databases music –lock-all-tables –flush-logs > /tmp/music.sql
[root@localhost ~]# cd /tmp
[root@localhost tmp]# ls -lt
total 86744
-rw-r–r–. 1 root root     1948 Mar  4 05:58 music.sql

删除数据库，已验证稍后还原效果：
MariaDB [(none)]> drop database music;
Query OK, 2 rows affected (0.03 sec)

MariaDB [(none)]> show databases;
+——————–+
| Database           |
+——————–+
| information_schema |
| mysql              |
| performance_schema |
| test               |
+——————–+
4 rows in set (0.00 sec)

可以看到 music 数据库已经不在了。

还原整库：
MariaDB [(none)]> source /tmp/music.sql
Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 1 row affected (0.00 sec)

Database changed
Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.04 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 4 rows affected (0.00 sec)
Records: 4  Duplicates: 0  Warnings: 0

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.01 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 4 rows affected (0.01 sec)
Records: 4  Duplicates: 0  Warnings: 0

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

MariaDB

> 

验证数据是否已找回：
MariaDB

> select * from summary;
+——+————————–+
| id   | info                     |
+——+————————–+
|    1 | Eric Gao is a Oracle DBA |
|    2 | Eric Gao is a MySQL DBA  |
|    3 | Eric Gao is a AIX  SA    |
|    4 | Eric Gao is a Linux  SA  |
+——+————————–+
4 rows in set (0.00 sec)

OK，数据已还原！~~~

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