MySQL使用mysqldump实现数据完全备份
mysqldump备份与恢复
MySQL自带的备份工具,可方便实现对MySQL的备份
可以将指定的库、表导出为SQL脚本
使用命令mysql导入备份的数据
mysqldump -u root -p --all-databses > all-data-$(date +%F).sql ###备份所有数据库 mysqldump -u root -p -databases auth mysql > auth-mysql.sql ###备份auth和mysql库 mysqldump -u root -p auth > auth-$(data +%F).sql ###备份auth数据库 mysqldump -u root -p mysql user > mysql-user-$(date +%F).sql ###备份mysql的user表 mysqldump -u root -p -d mysql user > /tmp/desc-mysql-user.sql ###备份mysql库user表的结构
mysql> show databases; +--------------------+ | Database | +--------------------+ | information_schema | | myadm | | mysql | | performance_schema | | student | | sys | | tom | +--------------------+ 7 rows in set (0.00 sec) [root@server3 opt]# mysqldump -u root -p tom > /opt/tom.sql Enter password: [root@server3 opt]# ls tom.sql # 导出的备份文件
对所有库进行完全备份
[root@server3 opt]# mysqldump -uroot -pabc123 --all-databases > /backup/all.sql mysqldump: [Warning] Using a password on the command line interface can be insecure.
mysqldump备份数据表
musqldump可针对库内特定的表进行备份
使用mysqldump备份表的操作
mysqldump -u 用户名 -p 【密码】【选项】选项库名 表名 > /备份路径/备份文件名
示例:
mysql> use tom; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> show tables; +---------------+ | Tables_in_tom | +---------------+ | chengji | +---------------+ 1 row in set (0.00 sec) mysql> select * from chengji; +----------+-------+ | name | point | +----------+-------+ | xiaowang | 77 | | xiaoli | 75 | +----------+-------+ 2 rows in set (0.00 sec) #复制tom表 name字段 张三内容 生成一张新表pp mysql> create table pp as select * from chengji where name='xiaowang'; Query OK, 1 row affected (0.03 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> show tables; +---------------+ | Tables_in_tom | +---------------+ | chengji | | pp | +---------------+ 2 rows in set (0.00 sec) #新生成表 mysql> select *from pp; +----------+-------+ | name | point | +----------+-------+ | xiaowang | 77 | +----------+-------+ 1 row in set (0.00 sec)
[root@server3 ~]# mysql -u root -p123123 chengji pp > /opt/pp.sql
mysql: [Warning] Using a password on the command line interface can be insecure.
[root@server3 ~]# ls /opt
pp.sql
恢复数据库
1、使用mysqldump导出的脚本,可使用导入的方法:
1)source命令【作用于mysql模式下】2)mysql命令【作用于于linux模式下】
2、使用source恢复数据库的步骤
登录到mysql数据库
执行source备份sql脚本的路径
source恢复的示例
MYSQL[(none)]> source /backup/all-data.sql
模拟删除表
mysql> use tom; Database changed #删除表 mysql> drop table chengji; Query OK, 0 rows affected (0.02 sec) mysql> drop table pp; Query OK, 0 rows affected (0.01 sec)
进行恢复
mysql> use tom; Database changed mysql> use tom; Database changed mysql> show tables; +---------------+ | Tables_in_tom | +---------------+ | tom | +---------------+ 1 row in set (0.00 sec) mysql> select * from tom; +----+----------+----------+ | id | name | address | +----+----------+----------+ | 1 | zhangsan | hangzhou | +----+----------+----------+ 1 row in set (0.00 sec) mysql> insert into tom (name,address) values('lisi','wuxi'); Query OK, 1 row affected (0.00 sec) mysql> select * from tom; +----+----------+----------+ | id | name | address | +----+----------+----------+ | 1 | zhangsan | hangzhou | | 2 | lisi | wuxi | +----+----------+----------+ 2 rows in set (0.00 sec) mysql> create table pp as select * from tom where name='zhangsan'; Query OK, 1 row affected (0.02 sec) Records: 1 Duplicates: 0 Warnings: 0 mysql> show tables; +---------------+ | Tables_in_tom | +---------------+ | pp | | tom | +---------------+ 2 rows in set (0.00 sec) mysql> select * from pp; +----+----------+----------+ | id | name | address | +----+----------+----------+ | 1 | zhangsan | hangzhou | +----+----------+----------+ 1 row in set (0.00 sec) mysql> Ctrl-C -- exit! Aborted [root@server3 opt]# mysqldump -u root -p tom pp > /opt/pp.sql Enter password: [root@server3 opt]# ls /opt/ all.sql opt.sql pp.sql rh tom.tom [root@server3 opt]# mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 11 Server version: 5.6.36-log Source distribution Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> drop table tom; ERROR 1046 (3D000): No database selected mysql> use tom; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> drop table tom; Query OK, 0 rows affected (0.01 sec) mysql> drop table pp; Query OK, 0 rows affected (0.00 sec) ```java mysql> show tables; Empty set (0.00 sec) #恢复 mysql> source /opt/all.sql; ..省略内容 mysql> use tom; Database changed mysql> show tables; +---------------+ | Tables_in_tom | +---------------+ | tom | +---------------+ 1 row in set (0.00 sec) mysql> source /opt/pp.sql; mysql> show tables; +---------------+ | Tables_in_tom | +---------------+ | pp | | tom | +---------------+ 2 rows in set (0.00 sec) mysql> select * from pp; +----+----------+----------+ | id | name | address | +----+----------+----------+ | 1 | zhangsan | hangzhou | +----+----------+----------+ 1 row in set (0.00 sec)
已经恢复 这边我们是恢复所有数据库
也可以单独的对标进行备份恢复
到此这篇关于MySQL使用mysqldump实现数据完全备份的文章就介绍到这了,更多相关MySQL mysqldump数据备份内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家!
相关文章
mysql 常用设置 字符集编码、自动完成(自动提示)、监听外网ip
mysql 常用设置 字符集编码、自动完成(自动提示)、监听外网ip,需要的朋友可以参考下2012-07-07MySQL查询空字段或非空字段(is null和not null)
本文介绍在MySQL中,面对值为空(NULL)的字段,应该如何查询。怎么判断一个字段的值为NULL或不为NULL,需要的朋友可以参考下2016-04-04
最新评论