MySQL/MariaDB数据库备份与恢复之mysqlpump入门操作

创建测试用表：
MariaDB [music]>  create table summary(id int,info char(128));
Query OK, 0 rows affected (0.05 sec)

MariaDB [music]> show tables;
+-----------------+
| Tables_in_music |
+-----------------+
| summary         |
| test            |
+-----------------+
2 rows in set (0.00 sec)

插入测试数据：
MariaDB [music]> insert into summary values(1,'Eric Gao is a Oracle DBA');
Query OK, 1 row affected (0.00 sec)

MariaDB [music]> insert into summary values(2,'Eric Gao is a MySQL DBA'); 
Query OK, 1 row affected (0.05 sec)

MariaDB [music]> insert into summary values(3,'Eric Gao is a AIX  SA'); 
Query OK, 1 row affected (0.00 sec)

MariaDB [music]> insert into summary values(4,'Eric Gao is a Linux  SA'); 
Query OK, 1 row affected (0.01 sec)

MariaDB [music]> 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 [music]>

验证数据是否已找回：
MariaDB [music]> 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！~~~