Xtrabackup增量备份

增量备份

[root@localhost ~]# innobackupex --defaults-file=/etc/my.cnf --user=root --password=123456 --socket=/var/lib/mysql/mysql.sock --incremental /zl/backup/ --incremental-basedir=/root/backup/2020-01-15_21-29-53/
#--incremental /backup/   指定增量备份文件备份的目录
#--incremental-basedir    指定上一次全备或增量备份的目录
删除数据来测试增量恢复

增量恢复操作过程

[root@localhost ~]# innobackupex --apply-log --redo-only /root/backup/2020-01-15_21-29-53/
[root@localhost ~]# innobackupex --apply-log --redo-only /root/backup/2020-01-15_21-29-53/ --incremental-dir=/zl/backup/2020-01-15_21-47-03/

[root@localhost ~]# systemctl stop mysqld
[root@localhost ~]# cd /var/lib/mysql
[root@localhost mysql]# rm -rf *
[root@localhost mysql]# innobackupex --defaults-file=/etc/my.cnf --copy-back /root/backup/2020-01-15_21-29-53/
[root@localhost mysql]# chown -R mysql:mysql ./*
[root@localhost mysql]# systemctl start mysqld

[root@localhost mysql]# mysql -uroot -p123456
mysql: [Warning] Using a password on the command line interface can be insecure.
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.29 MySQL Community Server (GPL)

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Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| a                  |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
5 rows in set (0.00 sec)