日期:2014-05-16 浏览次数:20816 次
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1.在http://www.percona.com/downloads/XtraBackup/LATEST/? 下载对应平台的XtraBackup,这里使用的是 http://www.percona.com/redir/downloads/XtraBackup/XtraBackup-2.0.0/binary/Linux/x86_64/percona-xtrabackup-2.0.0.tar.gz
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2.解压tar -zvxf percona-xtrabackup-2.0.0.tar.gz -C /usr/local/
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3.因为MySQL我安装的是Percona-Server-5.5.21,而且安装目录为:/usr/local/Percona-Server-5.5.21-rel25.0-227.Linux.x86_64/,注:同样可以用于其他MySQL版本
cd /usr/local/percona-xtrabackup-2.0.0/bin cp * /usr/local/Percona-Server-5.5.21-rel25.0-227.Linux.x86_64/bin/
?因为系统Path里面已经加入
export PATH=$JAVA_HOME/bin:/usr/local/Percona-Server-5.5.21-rel25.0-227.Linux.x86_64/bin:$PATH
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4.我的mysql的配置文件是/etc/my.cnf,如果不指定,XtraBackup默认使用此文件识别mysql安装目录,数据文件目录等信息
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5.全量备份:innobackupex --user=DBUSER --password=DBUSERPASS /path/to/BACKUP-DIR/,我使用/data/backup/mysql/作为mysql备份文件存放目录
innobackupex --user=YOUS --password=YOUS /data/backup/mysql
看到类似输出说明备份成功,如出错,根据提示解决
innobackupex: Backup created in directory '/data/backup/mysql/2012-05-28_19-01-32' innobackupex: MySQL binlog position: filename 'mysql-bin.000063', position 44718229367 120528 19:07:53 innobackupex: completed OK!
可以在/data/backup/mysql/2012-05-28_19-01-32看到备份的文件
此时,cat xtrabackup_checkpoints会看到
backup_type = full-backuped from_lsn = 0 to_lsn = 44718229367 last_lsn = 44718229367?
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6.全量Preparing:innobackupex --apply-log /path/to/BACKUP-DIR
innobackupex --user=YOUS --password=YOUS --apply-log /data/backup/mysql/2012-05-28_19-01-32/
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可以看到如下生成文件:
-rw-r--r--. 1 root root 13 May 28 19:07 xtrabackup_binary -rw-r--r--. 1 root root 26 May 29 15:07 xtrabackup_binlog_info -rw-r--r--. 1 root root 43 May 29 15:07 xtrabackup_binlog_pos_innodb -rw-r-----. 1 root root 85 May 29 15:07 xtrabackup_checkpoints -rw-r-----. 1 root root 2097152 May 29 14:03 xtrabackup_logfile
cat xtrabackup_checkpoints,可以看出是全量备份并且做了prepare的
backup_type = full-prepared from_lsn = 0 to_lsn = 49556823920 last_lsn = 49556823920
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7.增量备份的前提是必须已经做过全量备份。
增量备份:innobackupex --incremental /path/to/BACKUP-DIR/--incremental-basedir=BASEDIR,当有了INCREMENTAL-DIR-1之后,下一次增量备份的需要基于INCREMENTAL-DIR-1,变成innobackupex --incremental /path/to/BACKUP-DIR/ --incremental-basedir=INCREMENTAL-DIR-1
全量备份的目录是:/data/backup/mysql/2012-05-28_19-01-32
innobackupex --incremental /data/backup/mysql --incremental-basedir=/data/backup/mysql/2012-05-28_19-01-32/ --user=YOUS --password=YOUS
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增量备份成功会生成目录/data/backup/mysql/2012-05-29_14-25-03
cat xtrabackup_checkpoints
backup_type = incremental from_lsn = 44718229367 to_lsn = 49556823920 last_lsn = 49556823920?
8.增量Preparing,对每一个增量备份目录:
innobackupex --apply-log --redo-only BASE-DIR --incremental-dir=INCREMENTAL-DIR-1
innobackupex --apply-log --redo-only BASE-DIR --incremental-dir=INCREMENTAL-DIR-2
innobackupex --apply-log --redo-only /data/backup/mysql/2012-05-28_19-01-32/ --incremental-dir=/data/backup/mysql/2012-05-29_14-25-03 --user=YOUS--password=YOUS
看到如下输出:
120529 14:29:43 InnoDB: Shutdown completed; log sequence number 49556823920 120529 14:29:43 innobackupex: completed OK!
cd BASE-DIR,cat xtrabackup_checkpoints
backup_type = full-prepared from_lsn = 0 to_lsn = 49556823920 last_lsn = 49556823920
?当把所有的增量备份都执行Preparing后,还可以全量备份和全部的增量备份做一次Preparing,
innobackupex --apply-log BASE-DIR
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9.恢