差异备份
基于第一天进行差异备份
删除之前修改的数据备份
[root@service ~]# rm -rf /data/backup/*
[root@service ~]# ls /data/backup完整备份
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --backup --target-dir=/data/backup/base/ -uroot -pWyxbuke00. -H localhost -P 3306 --no-server-version-check
[root@service ~]# ls /data/backup/base
backup-my.cnf binlog.index ib_buffer_pool mysql performance_schema undo_001 xtrabackup_binlog_info xtrabackup_info xtrabackup_tablespaces
binlog.000018 db01 ibdata1 mysql.ibd sys undo_002 xtrabackup_checkpoints xtrabackup_logfile对数据库进行数据变更
mysql> show tables;
+----------------+
| Tables_in_db01 |
+----------------+
| tb_user |
+----------------+
1 row in set (0.00 sec)
mysql> select * from tb_user;
+----+---------+------+
| id | name | sex |
+----+---------+------+
| 1 | Tom | 1 |
| 2 | Trigger | 0 |
| 3 | Dawn | 1 |
| 4 | sxx | 0 |
| 5 | wyx | 1 |
| 6 | asd | 1 |
+----+---------+------+
6 rows in set (0.00 sec)
mysql> insert into tb_user values (7,'lisi',1);
Query OK, 1 row affected (0.00 sec)
mysql> select * from tb_user;
+----+---------+------+
| id | name | sex |
+----+---------+------+
| 1 | Tom | 1 |
| 2 | Trigger | 0 |
| 3 | Dawn | 1 |
| 4 | sxx | 0 |
| 5 | wyx | 1 |
| 6 | asd | 1 |
| 7 | lisi | 1 |
+----+---------+------+
7 rows in set (0.00 sec)对第一次修改的数据进行备份
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --backup --target-dir=/data/backup/inc1 --incremental-basedir=/data/backup/base -uroot -pWyxbuke00. -H localhost -P 3306 --no-server-version-check第二次对数据进行修改
mysql> insert into tb_user values (8,'zhangsan',1);
Query OK, 1 row affected (0.00 sec)
mysql> select * from tb_user;
+----+----------+------+
| id | name | sex |
+----+----------+------+
| 1 | Tom | 1 |
| 2 | Trigger | 0 |
| 3 | Dawn | 1 |
| 4 | sxx | 0 |
| 5 | wyx | 1 |
| 6 | asd | 1 |
| 7 | lisi | 1 |
| 8 | zhangsan | 1 |
+----+----------+------+
8 rows in set (0.00 sec)对第二次修改的数据进行备份
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --backup --target-dir=/data/backup/inc2 --incremental-basedir=/data/backup/base -uroot -pWyxbuke00. -H localhost -P 3306 --no-server-version-check第三次对数据库的数据进行修改
mysql> insert into tb_user values (9,'haha',1);
Query OK, 1 row affected (0.00 sec)
mysql> select * from tb_user;
+----+----------+------+
| id | name | sex |
+----+----------+------+
| 1 | Tom | 1 |
| 2 | Trigger | 0 |
| 3 | Dawn | 1 |
| 4 | sxx | 0 |
| 5 | wyx | 1 |
| 6 | asd | 1 |
| 7 | lisi | 1 |
| 8 | zhangsan | 1 |
| 9 | haha | 1 |
+----+----------+------+
9 rows in set (0.00 sec)对第三次修改的数据进行备份
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --backup --target-dir=/data/backup/inc3 --incremental-basedir=/data/backup/base -uroot -pWyxbuke00. -H localhost -P 3306 --no-server-version-check应用完整备份
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --prepare --apply-log-only --target-dir=/data/backup/base
基于第一天和最后一天进行差异备份
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --prepare --target-dir=/data/backup/base --incremental-dir=/data/backup/inc3停止MySQL服务，删除数据库中的所有文件
[root@service ~]# systemctl stop mysqld
[root@service ~]# rm -rf /var/lib/mysql/*
[root@service ~]# ls /var/lib/mysql进行恢复，并进入数据库查看
[root@service ~]# xtrabackup --defaults-file=/etc/my.cnf --copy-back --target-dir=/data/backup/base/
[root@service ~]# chown -R mysql.mysql /var/lib/mysql
[root@service ~]# systemctl start mysqld
[root@service ~]# mysql -u root -p
Enter password:
mysql> use db01;
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> select * from tb_user;
+----+----------+------+
| id | name | sex |
+----+----------+------+
| 1 | Tom | 1 |
| 2 | Trigger | 0 |
| 3 | Dawn | 1 |
| 4 | sxx | 0 |
| 5 | wyx | 1 |
| 6 | asd | 1 |
| 7 | lisi | 1 |
| 8 | zhangsan | 1 |
| 9 | haha | 1 |
+----+----------+------+
9 rows in set (0.00 sec)
