数据库备份,数据库为school,素材如下
1.创建student和score表
CREATE TABLE student (
id INT(10) NOT NULL UNIQUE PRIMARY KEY ,
name VARCHAR(20) NOT NULL ,
sex VARCHAR(4) ,
birth YEAR,
department VARCHAR(20) ,
address VARCHAR(50)
);
创建score表。SQL代码如下:
CREATE TABLE score (
id INT(10) NOT NULL UNIQUE PRIMARY KEY AUTO_INCREMENT ,
stu_id INT(10) NOT NULL ,
c_name VARCHAR(20) ,
grade INT(10)
);
2.为student表和score表增加记录
向student表插入记录的INSERT语句如下:
INSERT INTO student VALUES( 901,'张老大', '男',1985,'计算机系', '北京市海淀区');
INSERT INTO student VALUES( 902,'张老二', '男',1986,'中文系', '北京市昌平区');
INSERT INTO student VALUES( 903,'张三', '女',1990,'中文系', '湖南省永州市');
INSERT INTO student VALUES( 904,'李四', '男',1990,'英语系', '辽宁省阜新市');
INSERT INTO student VALUES( 905,'王五', '女',1991,'英语系', '福建省厦门市');
INSERT INTO student VALUES( 906,'王六', '男',1988,'计算机系', '湖南省衡阳市');
向score表插入记录的INSERT语句如下:
INSERT INTO score VALUES(NULL,901, '计算机',98);
INSERT INTO score VALUES(NULL,901, '英语', 80);
INSERT INTO score VALUES(NULL,902, '计算机',65);
INSERT INTO score VALUES(NULL,902, '中文',88);
INSERT INTO score VALUES(NULL,903, '中文',95);
INSERT INTO score VALUES(NULL,904, '计算机',70);
INSERT INTO score VALUES(NULL,904, '英语',92);
INSERT INTO score VALUES(NULL,905, '英语',94);
INSERT INTO score VALUES(NULL,906, '计算机',90);
INSERT INTO score VALUES(NULL,906, '英语',85);
3.备份数据库school到/backup目录
[root@localhost ~]# mysqldump -uroot -p123456 -B school > /backup/school_db.sql
4.备份MySQL数据库为带删除表的格式,能够让该备份覆盖已有数据库而不需要手动删除原有数据库
[root@localhost ~]# mysqldump -uroot -p123456 -B school --add-drop-table > /backup/school_db2.sql
5.直接将MySQL数据库压缩备份
[root@localhost ~]# mysqldump -uroot -p123456 -B school | gzip >/backup/school_db3.sql.gz
6.备份MySQL数据库某个(些)表。此例备份student表
[root@localhost ~]# mysqldump -uroot -p123456 school student > /backup/student.sql
7.同时备份多个MySQL数据库(其他数据库素材自行准备)
[root@localhost ~]# mysqldump -uroot -p123456 -B school city >
/backup/sch_ci_db.sql
8.仅仅备份数据库结构
使用-d选项,没有数据就是相当于表结构
[root@localhost ~]# mysqldump -uroot -p123456 -d school > /backup/desc_school.sql
9.备份服务器上所有数据库
[root@localhost ~]# mysqldump -uroot -p123456 --all-databases > /backup/all_db.sql
10.还原MySQL数据库
首先要删除数据库
[root@localhost ~]# mysql -uroot -p123456 -e "drop database school"
可以查看一下
[root@localhost ~]# mysql -uroot -p123456 -e "show databases"
mysql: [Warning] Using a password on the command line interface can be insecure.
+--------------------+
| Database |
+--------------------+
| information_schema |
| city |
| db1 |
| db32 |
| homework |
| mysql |
| performance_schema |
| sys |
| test |
+--------------------+
此时已经没有
进行还原
[root@localhost ~]# mysql -uroot -p123456 < /backup/school_db.sql
此时查看
[root@localhost ~]# mysql -uroot -p123456 -e "show databases"
mysql: [Warning] Using a password on the command line interface can be insecure.
+--------------------+
| Database |
+--------------------+
| information_schema |
| city |
| db1 |
| db32 |
| homework |
| mysql |
| performance_schema |
| school |
| sys |
| test |
+--------------------+
11.还原压缩的MySQL数据库
先删除数据库
[root@localhost ~]# mysql -uroot -p123456 -e "drop database school"
进行还原
[root@localhost ~]# gunzip /backup/school_db3.sql.gz | mysql -uroot -p123456 -e "create database school"
12.使用xtrabackup 备份数据库
[root@localhost ~]# innobackupex --user-root --password=123456 --default-file=/etc/my.cnf --databases=school /backup/
13.在另外的数据库服务器上还原xtrabackup 备份(缺)
14.使用mydumper备份数据库文章来源:https://www.toymoban.com/news/detail-601132.html
[root@localhost ~]# mydumper -u root -p123456 -B school -o /backup/mydumper_sch.sql
15.使用mydumper恢复数据库文章来源地址https://www.toymoban.com/news/detail-601132.html
[root@localhost ~]# myloader -u root -p123456 -d /backup/mydumper_sch.sql/ -o -B school
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