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CentOS-6.5下MariaDB-10基于XtraBackup备份工具的原理及配置详解(三)
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oma]> CREATE TABLE hehe1 (Name CHAR(30)); MariaDB [xiaoma]> \q |
2.2 其次，在做第二次增量备份：
| [root@localhost ~]# innobackupex --incremental /mybackups/ --incremental-basedir=/mybackups/2014-03-07_09-56-26/ 省略...出现此行可以了。 140307 10:05:25 innobackupex: completed OK! [root@localhost ~]# |
2.3 查看xtrabackup_checkpoints文件信息：
| [root@localhost mybackups]# cat /mybackups/2014-03-07_10-05-20/xtrabackup_checkpoints backup_type = incremental from_lsn = 1721035 to_lsn = 1728639 last_lsn = 1728639 compact = 0 [root@localhost mybackups]# |
2.4 假如说这时候我们又做了修改，而没有做增量备份，那么就从要最后一次增量备份中（如下信息的日志及位置）做相关数据恢复：
| [root@localhost mybackups]# cat /mybackups/2014-03-07_10-05-20/xtrabackup_binlog_info master-bin.000002 874 [root@localhost mybackups]# |
2.5 那么就又再一次的插入数据（注意此时没有做任何备份）：
| [root@localhost 2014-03-07_13-24-26]# mysql MariaDB [(none)]> use hellodb MariaDB [hellodb]> INSERT INTO tb1 VALUES (3),(4); |
3、模拟数据损坏或操作失误：
| [root@localhost ~]# service mysqld stop Shutting down MySQL.. [ OK ] [root@localhost ~]# rm -rf /data/mydata/* |
4、模拟将数据恢复：
4.1 先执行恢复完全备份：
| [root@localhost ~]# innobackupex --apply-log --redo-only /mybackups/2014-03-07_09-51-29/ ... ... 140307 10:17:01 innobackupex: completed OK! [root@localhost ~]# |
4.2 接着执行恢复第一次增量备份：
| [root@localhost ~]# innobackupex --apply-log --redo-only /mybackups/2014-03-07_09-51-29/ --incremental-dir=/mybackups/2014-03-07_09-56-26/ ... ... 140307 10:21:37 innobackupex: completed OK! [root@localhost ~]# |
4.3 最后执行第二次增量备份：
| [root@localhost ~]# innobackupex --apply-log --redo-only /mybackups/2014-03-07_09-51-29/ --incremental-dir=/mybackups/2014-03-07_10-05-20/ ... ... 40307 10:22:31 innobackupex: completed OK! [root@localhost ~]# |
4.4 查看几次恢复合并后的文件（可以和之前做对比）：
| [root@localhost ~]# cd /mybackups/2014-03-07_09-51-29/ [root@localhost 2014-03-07_09-51-29]# ls backup-my.cnf ibdata1 performance_schema xiaoma2 xtrabackup_binlog_info xtrabackup_logfile hellodb mysql test xtrabackup_binary xtrabackup_checkpoints [root@localhost 2014-03-07_09-51-29]# |
4.5 查看xtrabackup_checkpoints文件信息：
| [root@localhost ~]# cat /mybackups/2014-03-07_09-51-29/xtrabackup_checkpoints backup_type = full-prepared from_lsn = 0 to_lsn = 1728639 last_lsn = 1728639 compact = 0 [root@localhost ~]# |
4.6 查看完全备份与第二次备份的时间点：
| [root@localhost 2014-03-07_09-51-29]# cat /mybackups/2014-03-07_09-51-29/xtrabackup_binlog_info master-bin.000002 874 [root@localhost 2014-03-07_09-51-29]# cat /mybackups/2014-03-07_10-05-20/xtrabackup_binlog_info master-bin.000002 874 [root@localhost 2014-03-07_09-51-29]# |
4.7 恢复数据（完全备份）：
| [root@localhost 2014-03-07_09-51-29]# innobackupex --copy-back /mybackups/2014-03-07_09-51-29/ ... ... 140307 10:33:42 innobackupex: completed OK! [root@localhost 2014-03-07_09-51-29]# |
4.8 修改器属主属组：
| [root@localhost ~]# cd /data/mydata/ [root@localhost mydata]# chown -R mysql:mysql ./* |
4.9 查看且导出数据：
| [root@localhost mydata]# mysqlbinlog --start-position=874 /data/binlogs/master-bin.000002 ... ... INSERT INTO tb1 VALUES (3),(4) ... ... [root@localhost mydata]# mysqlbinlog --start-position=874 /data/binlogs/master-bin.000002 > /tmp/inc.sql |
4.10 启动服务：
| [root@localhost mydata]# service mysqld start Starting MySQL. [ OK ] [root@localhost mydata]# |
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