xtrabackup--一款基于innodb的热备份工具，支持完全备份，增量备份
一、特点
1.物理上的备份
2.备份过程不会打断执行的事务
3.自动备份检验
页大小，page:16k
二、备份案列
准备工具
wget https://downloads.percona.com/downloads/Percona-XtraBackup-2.4/Percona-XtraBackup-2.4.23/binary/redhat/7/x86_64/percona-xtrabackup-24-2.4.23-1.el7.x86_64.rpm yum install percona-xtrabackup-24-2.4.23-1.el7.x86_64.rpm -y LSN(log sequ):日志序列号
1、完全备份
mkdir /backup xtrabackup --backup --target-dir=/backup scp -r /backup/ 192.168.48.71:/
xtrabackup --prepare --target-dir=/backup/
xtrabackup --copy-back --target-dir=/backup/ chown -R mysql.mysql /data/mysql/
2、增量备份
xtrabackup --backup --target-dir=/backup/base insert teachers (name,age) values('wang',20); xtrabackup --backup --target-dir=/backup/inc1 --incremental-basedir=/backup/base insert teachers (name,age) values('zhang',20); xtrabackup --backup --target-dir=/backup/inc2 --incremental-basedir=/backup/inc1
scp -r /backup/ 192.168.48.71:/ 目标主机 du -sh /backup/* xtrabackup --prepare --apply-log-only --target-dir=/backup/base du -sh /backup/* xtrabackup --prepare --apply-log-only --target-dir=/backup/base --incremental-dir=/backup/inc1 du -sh /backup/* xtrabackup --prepare --target-dir=/backup/base --incremental-dir=/backup/inc2 systemctl stop mariadb rm -rf /data/mysql/* ll /data/mysql/ xtrabackup --copy-back --target-dir=/backup/base du -sh /data/mysql/ chown -R mysql.mysql /data/mysql/ systemctl start mariadb
