xtrabackup学习笔记

Posted 2020-09-21

wget https://www.percona.com/downloads/XtraBackup/Percona-XtraBackup-2.4.7/binary/tarball/percona-xtrabackup-2.4.7-Linux-x86_64.tar.gz

 yum -y install perl perl-devel libaio libaio-devel perl-Time-HiRes perl-DBD-mysql numactl -y

 yum install numactl -y

mv bin/* /sbin/

3.热备份

xtrabackup项目

innobackupex是对xtrabackup封装的perl脚本，一般进行备份

备份：

innobackupex --defaults-file=/etc/my.cnf --user=root --password=123456  /bak/

恢复：

1./etc/init.d/mysql stop

2.删除老数据库中的数据文件和事务日志文件

恢复日志

3.innobackupex --defaults-file=/etc/my.cnf --apply-log /bak/2013-

恢复数据

4.innobackupex --defaults-file=/etc/my.cnf --copy-back /bak/2013-

5.chown -R mysql.mysql /data/

6./etc/init.d/mysql start

全量恢复:

1.全量备份

innobackupex --defaults-file=/etc/my.cnf /bak/fullbak/

2.增量备份

innobackupex --defaults-file=/etc/my.cnf --incremental /bak/incrementbak/ --incremental-basedir=/bak/fullbak/2013(日期)/

cd fullbak/2013(日期)/

增量恢复:

1./etc/init.d/mysql stop

1.先恢复增量事务日志

innobackupex --apply-log --read-only /bak/fullbak/

2.再恢复全量事务日志

innobackupex --apply-log /bak/fullbak/

3.将备份文件的数据恢复到数据库

innobackupex --copy-back /bak/fullbak/

4.chown -R  mysql.mysql /data/

5. /etc/init.d/msyql start

 SHOW MASTER STATUS;

 show slave stats\G

mysql> GRANT REPLICATION SLAVE ON *.* TO ‘repl‘@‘%‘ IDENTIFIED BY ‘replpassword‘;

mysql> CHANGE MASTER TO MASTER_HOST = ‘dbmaster‘, MASTER_USER = ‘repl‘, MASTER_PASSWORD = ‘replpassword‘, MASTER_PORT = 3306, MASTER_LOG_FILE = ‘mysql-bin.000001‘, MASTER_LOG_POS = 643;

start slave;