mysql备份还原工具percona-xtrabackup
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今天主要讲全部还原。
1、安装percona-xtrabackup报错处理
[[email protected] ~]# wget ftp://rpmfind.net/linux/dag/redhat/el6/en/x86_64/dag/RPMS/libev-4.15-1.el6.rf.x86_64.rpm
[[email protected] ~]# wget http://mirror.centos.org/centos/6/os/x86_64/Packages/numactl-2.0.9-2.el6.x86_64.rpm
[[email protected] ~]# wget https://www.percona.com/downloads/XtraBackup/XtraBackup-2.1.5/RPM/rhel6/x86_64/percona-xtrabackup-2.1.5-680.rhel6.x86_64.rpm
[[email protected] ~]# rpm -ivh libev-4.15-1.el6.rf.x86_64.rpm
[[email protected] ~]# rpm -ivh numactl-2.0.9-2.el6.x86_64.rpm
Preparing... ########################################### [100%]
1:numactl ########################################### [100%]
[[email protected] ~]# rpm -ivh percona-xtrabackup-24-2.4.1-1.el6.x86_64.rpm
warning: percona-xtrabackup-24-2.4.1-1.el6.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID cd2efd2a: NOKEY
Preparing... ########################################### [100%]
1:percona-xtrabackup-24 ########################################### [100%]
注意：percona-xtrabackup-24版本mysql5.7以上
percona-xtrabackup-2.1.5适合MySQL5.6
2、实战演练
192.168.1.242线上主库备份数据，拷贝到测试环境192.168.3.86使用
a、将全备的数据拷贝至3,86
b、3.86安装MySQL5.6.15，并正常启动
c、安装备份工具percona-xtrabackup-2.1.5版本
d、删除所有数据库，导入数据，重启数据库
3、报错处理
MySQL出现Error: page 1 log sequence number解决：http://www.chengyongxu.com/blog/mysql%E5%87%BA%E7%8E%B0error-page-1-log-sequence-number%E8%A7%A3%E5%86%B3/
按提示在 my.cnf的[mysqld]下加入
[mysqld]
innodb_force_recovery = 6 （设置低于6，还是会有问题）
正常启动，但是为只读模式，只可以查询而已。
可以正常启动了，查看日志
[[email protected] ~]# tail -f /var/log/mysqld.log （当缓存中没有数据，需要从磁盘获取）
2017-07-19 11:13:33 10824 [ERROR] InnoDB: Failed to find tablespace for table ‘"pms"."accountkpisheet"‘ in the cache. Attempting to load the tablespace with space id 10.
2017-07-19 11:13:48 10824 [ERROR] InnoDB: Failed to find tablespace for table ‘"pms"."adjustwishproductsschedule"‘ in the cache. Attempting to load the tablespace with space id 16.
2017-07-19 11:13:50 10824 [ERROR] InnoDB: Failed to find tablespace for table ‘"pms"."aliexpressaccount"‘ in the cache. Attempting to load the tablespace with space id 3451350.
2017-07-19 11:13:50 10824 [ERROR] InnoDB: Failed to find tablespace for table ‘"pms"."tr_aliaccount_alicategory"‘ in the cache. Attempting to load the tablespace with space id 389786.
2017-07-19 11:13:51 10824 [ERROR] InnoDB: Failed to find tablespace for table ‘"pms"."aliexpresscategory"‘ in the cache. Attempting to load the tablespace with space id 617645.
4、还原步骤
[[email protected]_87 home]# innobackupex -user=root -password=‘!QAZxsw2‘ --apply-log /home/2017-08-06/2017-08-06_03-33-34/
[[email protected]_87 home]# rm -fr /home/mysql/*
[[email protected]_87 home]# innobackupex --copy-back /home/2017-08-06/2017-08-06_03-33-34/
[[email protected]_87 home]# chown -R mysql.mysql /home/mysql/
[[email protected]_87 home]# kill -9 32217 31619
[[email protected]_87 home]# ps aux |grep mysql/
root 2586 0.0 0.0 103264 916 pts/0 S+ 15:10 0:00 grep mysql/
[[email protected]_87 home]# /etc/init.d/mysqld restart
ERROR! MySQL server PID file could not be found!
Starting MySQL.............. SUCCESS
5、设置权限
[[email protected]_87 home]# mysql -uroot -p‘123456‘
mysql> grant select,insert,update,delete on *.* to ‘root‘@‘192.168.%.%‘ Identified by "!QAZxsw2";
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
客户端连接测试：
[[email protected] classes]# mysql -h192.168.3.87 -uroot -p‘123456‘
Welcome to the MySQL monitor. Commands end with ; or \\g.
Server version: 5.6.15-log Source distribution
mysql> show databases;
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