标签:ica password 技术分享 lin top grant cti default sock
前一篇文章我们讲到了PXB的原理以及安装方法,接下来将详细介绍 XtraBackup 备份和恢复的具体过程。
xtrabackup 工具有许多参数,具体可去官网查询(xtrabackup 参数选项),这里简单介绍一些常用的参数。
--defaults-file=[MY.CNF]
指定配置文件:只能从给定的文件中读取默认选项。 且必须作为命令行上的第一个选项;必须是一个真实的文件,它不能是一个符号链接。
--database=#
指定备份的数据库和表,格式为:--database="db1[.tb1] db2[.tb2]"
创建用于备份恢复的用户 pxb 并赋予权限
mysql> create user pxb@‘localhost‘ identified by ‘123456‘; mysql> grant reload,process,lock tables,replication client on *.* to pxb@localhost;
创建存放目录
[root@centos6 mysql]# mkdir -pv /data/pxb mkdir: 已创建目录 "/data" mkdir: 已创建目录 "/data/pxb"
进行数据库全备
[root@centos6 pxb]# innobackupex --defaults-file=/etc/my.cnf --user=pxb --password=123456 --socket=/tmp/mysql.sock /data/pxb 170424 02:46:11 innobackupex: Starting the backup operation IMPORTANT: Please check that the backup run completes successfully. At the end of a successful backup run innobackupex prints "completed OK!". ………… 170424 02:46:12 >> log scanned up to (2627779) 170424 02:46:13 Executing FLUSH NO_WRITE_TO_BINLOG TABLES... 170424 02:46:13 Executing FLUSH TABLES WITH READ LOCK... 170424 02:46:13 Starting to backup non-InnoDB tables and files ………… 170424 02:46:15 Executing FLUSH NO_WRITE_TO_BINLOG ENGINE LOGS... xtrabackup: The latest check point (for incremental): ‘2627770‘ xtrabackup: Stopping log copying thread. .170424 02:46:15 >> log scanned up to (2627779) 170424 02:46:15 Executing UNLOCK TABLES 170424 02:46:15 All tables unlocked 170424 02:46:15 [00] Copying ib_buffer_pool to /data/pxb/2017-04-24_02-46-11/ib_buffer_pool 170424 02:46:15 [00] ...done 170424 02:46:15 Backup created in directory ‘/data/pxb/2017-04-24_02-46-11/‘ MySQL binlog position: filename ‘mysql-bin.000002‘, position ‘2628‘ 170424 02:46:15 [00] Writing backup-my.cnf 170424 02:46:15 [00] ...done 170424 02:46:15 [00] Writing xtrabackup_info 170424 02:46:15 [00] ...done xtrabackup: Transaction log of lsn (2627770) to (2627779) was copied. 170424 02:46:15 completed OK!
可以看到整个备份过程:连接数据库,开始拷贝redo log,拷贝innodb表文件,锁表、拷贝非innodb表文件,停止拷贝redo log,解锁。
查看生成的文件:
[root@centos6 pxb]# ll 2017-04-24_02-46-11/ 总用量 12340 -rw-r----- 1 root root 427 4月 24 02:46 backup-my.cnf -rw-r----- 1 root root 358 4月 24 02:46 ib_buffer_pool -rw-r----- 1 root root 12582912 4月 24 02:46 ibdata1 drwxr-x--- 2 root root 4096 4月 24 02:46 mysql drwxr-x--- 2 root root 4096 4月 24 02:46 performance_schema drwxr-x--- 2 root root 12288 4月 24 02:46 sys drwxr-x--- 2 root root 4096 4月 24 02:46 test drwxr-x--- 2 root root 4096 4月 24 02:46 test1 -rw-r----- 1 root root 22 4月 24 02:46 xtrabackup_binlog_info -rw-r----- 1 root root 113 4月 24 02:46 xtrabackup_checkpoints -rw-r----- 1 root root 518 4月 24 02:46 xtrabackup_info -rw-r----- 1 root root 2560 4月 24 02:46 xtrabackup_logfile
标签:ica password 技术分享 lin top grant cti default sock
原文地址:http://www.cnblogs.com/waynechou/p/xtrabackup_backup.html