mysql冷备——极致零度

mysql数据迁移：冷备份

环境

• 两台centos7.5
• 关闭防火墙和selinux
• A 192.168.153.179
  B 192.168.153.178

部署：

A端：

1、安装mysql数据库

[root@localhost ~]# yum -y install mariadb mariadb-server

2、启动数据库

[root@localhost ~]# systemctl start mariadb

3、进入mysql操作

[root@localhost ~]# mysql

4、创建数据库，创建表，添加数据
创建dyw数据库，字符集为utf8

MariaDB [(none)]> create database dyw charset utf8;
Query OK, 1 row affected (0.00 sec)

创建yy表

MariaDB [(none)]> use dyw;
Database changed
MariaDB [dyw]> create table yy(id int(3),name varchar(12));
Query OK, 0 rows affected (0.00 sec)

插入1条数据

MariaDB [dyw]> insert yy values(0,'张三');
Query OK, 1 row affected (0.00 sec)
MariaDB [dyw]> select * from yy;
+------+--------+
| id   | name   |
+------+--------+
|    0 | 张三   |
+------+--------+
1 row in set (0.00 sec)

5、关闭mysql

[root@localhost ~]# mysqldump shutdown

6、打包/var/lib/mysql/数据

[root@localhost lib]# tar cf mysql.tar mysql/

7、将mysql.tar传送到B服务器

[root@localhost lib]# scp mysql.tar 192.168.153.178:/root

B端：

1、安装mysql服务

[root@localhost ~]# yum -y install mariadb mariadb-server

2、启动mysql

[root@localhost ~]# systemctl start mariadb

3、关闭mysql

[root@localhost ~]# mysqladmin shutdown

4、删除mysql原来datadir目录

[root@localhost ~]# rm -rf /var/lib/mysql/

5、更改mysql主配置文件

[root@localhost ~]# vim /etc/my.cnf

6、解压mysql.tar

[root@localhost ~]# tar xf mysql.tar

7、创建新定义mysql目录

[root@localhost ~]# mkdir /data_mysql

8、复制mysql目录内数据到创建目录

[root@localhost ~]# cp -r mysql /data_mysql/

9、修改mysql数据目录属主和属组

[root@localhost ~]# chown -R mysql:mysql /data_mysql/

10、给与test目录权限

[root@localhost ~]# chmod 700 /data_mysql/mysql/test/

11、启动mysql服务

[root@localhost ~]# systemctl start mariadb

12、进入mysql查看结果是否成功

[root@localhost ~]# mysql

MariaDB [(none)]> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| dyw                |
| mysql              |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.00 sec)

MariaDB [(none)]> use dyw;
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
MariaDB [dyw]> select * from yy;
+------+--------+
| id   | name   |
+------+--------+
|    0 | 张三   |
+------+--------+
1 row in set (0.00 sec)

大功告成~_ ~