环境配置
yum install percona-xtrabackup-24-2.4.12-1.el7.x86_64.rpm
yum install mariadb-server
systemctl restart mariadb
msyql < hellodb_innodb.sql
完全备份与增量备份
mkdir /backup
xtrabackup --backup --target-dir=/backup
-- 第一次修改数据
MariaDB [hellodb]> delete from toc;
MariaDB [hellodb]> update teachers set name='zhangsan' where tid=4;
-- 第一次增量备份
xtrabackup --backup --target-dir=/backup/inc1 --incremental-basedir=/backup
-- 第二次修改数据
MariaDB [hellodb]> insert into students(name,age)values('wangwu',32);
-- 第二次增量备份
xtrabackup --backup --target-dir=/backup/inc2 --incremental-basedir=/backup/inc1
将备份迁移到另外一台机器上,整理数据，封口
scp -r /backup 192.168.209.19:/
yum install percona-xtrabackup-24-2.4.12-1.el7.x86_64.rpm
yum install mariadb-server
mkdir /data/msyql
vim /etc/my.cnf
[mysqld]
datadir=/data/mysql
xtrabackup --prepare --apply-log-only --target-dir=/backup/base
xtrabackup --prepare --apply-log-only --target-dir=/backup/base --incremental-dir=/backup/inc1
xtrabackup --prepare --target-dir=/backup/base --incremental-dir=/backup/inc2
还原数据
xtrabackup --copy-back --target-dir=/backup/base
chown -R mysql.mysql /data/mysql
systemcctl restart mariadb
验证
MariaDB [hellodb]> select * from students where name='wangwu';
+-------+--------+-----+--------+---------+-----------+
| StuID | Name | Age | Gender | ClassID | TeacherID |
+-------+--------+-----+--------+---------+-----------+
| 26 | wangwu | 32 | F | NULL | NULL |
+-------+--------+-----+--------+---------+-----------+
1 row in set (0.00 sec)
MariaDB [hellodb]> select * from toc;
Empty set (0.00 sec)
MariaDB [hellodb]> select * from teachers where name='zhangsan';
+-----+----------+-----+--------+
| TID | Name | Age | Gender |
+-----+----------+-----+--------+
| 4 | zhangsan | 93 | F |
+-----+----------+-----+--------+
