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本篇内容介绍了“XtraBackup全量备份与恢复的过程”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！

1、全量备份innobackupex --defaults-file=/etc/my.cnf --user=root --password=mysql /backup/xtrabackup备份成功后会提示：170920 17:55:25 Executing UNLOCK TABLES170920 17:55:25 All tables unlocked170920 17:55:25 [00] Copying ib_buffer_pool to /backup/xtrabackup/2017-09-20_17-53-54/ib_buffer_pool170920 17:55:25 [00] ...done170920 17:55:25 Backup created in directory '/backup/xtrabackup/2017-09-20_17-53-54/'MySQL binlog position: filename 'mysql-bin-3306.000026', position '154'170920 17:55:25 [00] Writing /backup/xtrabackup/2017-09-20_17-53-54/backup-my.cnf170920 17:55:25 [00] ...done170920 17:55:25 [00] Writing /backup/xtrabackup/2017-09-20_17-53-54/xtrabackup_info170920 17:55:25 [00] ...donextrabackup: Transaction log of lsn (1833677659) to (1833677668) was copied.170920 17:55:25 completed OK!并且会记录当前binlog的文件名和position点，以方便同步复制用。2、全量恢复停止MySQL服务service mysql stop删除老数据库数据目录下的所有文件cd /mysql/data将备份文件中的日志应用到备份文件中的数据文件上innobackupex --detaults-file=/etc/my.cnf --apply-log /backup/xtrabackup/2017-09-20_17-53-54事务日志恢复成功后会提示：xtrabackup: starting shutdown with innodb_fast_shutdown = 1InnoDB: FTS optimize thread exiting.InnoDB: Starting shutdown...InnoDB: Shutdown completed; log sequence number 1833677864170920 18:10:21 completed OK!将备份文件中的数据恢复到数据库中：innobackupex --defaults-file=/etc/my.cnf --copy-back /backup/xtrabackup/2017-09-20_17-53-54物理文件和事务日志恢复成功后会提示：170920 18:15:33 [01] Copying ./weixin/admin_depart.frm to /mysql/data/weixin/admin_depart.frm170920 18:15:33 [01] ...done170920 18:15:33 [01] Copying ./weixin/admin_member.frm to /mysql/data/weixin/admin_member.frm170920 18:15:33 [01] ...done170920 18:15:33 [01] Copying ./weixin/admin_member.ibd to /mysql/data/weixin/admin_member.ibd170920 18:15:33 [01] ...done170920 18:15:33 [01] Copying ./weixin/admin_action.ibd to /mysql/data/weixin/admin_action.ibd170920 18:15:33 [01] ...done170920 18:15:33 [01] Copying ./weixin/admin_pri.frm to /mysql/data/weixin/admin_pri.frm170920 18:15:33 [01] ...done170920 18:15:33 [01] Copying ./weixin/admin_depart.ibd to /mysql/data/weixin/admin_depart.ibd170920 18:15:33 [01] ...done170920 18:15:33 [01] Copying ./weixin/wechat_conf.frm to /mysql/data/weixin/wechat_conf.frm170920 18:15:33 [01] ...done170920 18:15:33 completed OK!数据恢复完成之后，需要修改相关文件的权限：chown -R mysql:mysql /mysql/data重启启动MySQLservice mysql start

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