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云数据库 RDS
4.07GB
5.7
hins25487844_data_20240730052418_qp.xb
还原办法：
https://www.alibabacloud.com/help/zh/rds/apsaradb-rds-for-mysql/restore-the-data-of-an-apsaradb-rds-for-mysql-instance-from-a-physical-backup-file-to-a-self-managed-mysql-database
### 开始还原
cd /usr/local
因为备份文件太大，
## 解包
mkdir /var/mysql_bkdata/ -p
cat hins25487844_data_20240730052418_qp.xb | xbstream -x -v -C /var/mysql_bkdata/
## 解压
innobackupex --decompress --remove-original /var/mysql_bkdata/
# 恢复前准备
innobackupex --defaults-file=/var/mysql_bkdata/backup-my.cnf --apply-log /var/mysql_bkdata/
# 编辑数据库配置文件
mkdir /var/mysql_newdata -p
vi /etc/my.cnf
# 修改
datadir = /var/mysql_newdata
############重要########################
# 参数innodb_undo_tablespaces的取值需要与/var/mysql_bkdata/backup-my.cnf中的取值相同，
cat /var/mysql_bkdata/backup-my.cnf | grep innodb_undo_tablespaces
# 添加
# 这个值不是乱写的，是根据上面的查询命令获取到的
[mysqld]
innodb_undo_tablespaces=0
innodb_undo_directory= /var/mysql_newdata
# 恢复数据
innobackupex --defaults-file=/etc/my.cnf --copy-back /var/mysql_bkdata/
### 修改
vi /etc/my.cnf
# 增加
[mysqld]
lower_case_table_names=1
# 授权
chown -R mysql:mysql /var/mysql_newdata
# 启动
mysqld --defaults-file=/etc/my.cnf --user=mysql --datadir=/var/mysql_newdata &
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