利用Xtrabackup备份集合恢复一台从库的过程_MySQL

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利用xtrabackup备份集合恢复一台从库的过程

双轨制会员管理系统 v9.1

双轨制会员管理系统是一个以asp+access进行开发的双轨制直销系统源码，要求很低，容易维护。 后台路径：/admin 后台用户名和密码均为：admin 9.1版更新内容： 1、增加了操作余额前自动备份数据库，如果操作成功，则自动删除备份的数据库；如果操作有页面错误导致不成功，则会自动恢复到备份的数据库。这样运行过程中，即使是程序错误，也不用担心数据丢失了。 2、增加会员登录首

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1 time tar -xvf Open..tarx.gz

real    35m22.502s

user    10m16.499s

sys     1m28.578s

You have new mail in /var/spool/mail/root

PS:  Open..tarx.gzv 大小80G

2 time innobackupex --user=xxx --password=xxxx --defaults-file=/etc/my.cnf  --apply-log /home/alldb/

real    1m14.259s

user    0m0.356s

sys     0m2.672s

You have new mail in /var/spool/mail/root

3 copy以及chown

PS：磁盘空间不足，所以不能执行copyback，直接MV了。

mv /home/alldb/* /data/xxxx/open/ 

chown -R mysql.mysql /data/xxxx/open/

4 启动 service mysqld start

用5.5.20的mysql启动报错如下：

121221 10:40:36 mysqld_safe Starting mysqld daemon with databases from /data/md/open

121221 10:40:36 [Note] Flashcache bypass: disabled

121221 10:40:36 [Note] Flashcache setup error is : ioctl failed

121221 10:40:36 InnoDB: The InnoDB memory heap is disabled

121221 10:40:36 InnoDB: Mutexes and rw_locks use GCC atomic builtins

121221 10:40:36 InnoDB: Compressed tables use zlib 1.2.3

121221 10:40:36 InnoDB: Initializing buffer pool, size = 4.9G

121221 10:40:37 InnoDB: Completed initialization of buffer pool

121221 10:40:37 InnoDB: Error: data file /data/md/open/ibdata2 uses page size 1024,

121221 10:40:37 InnoDB: but the only supported page size in this release is=16384

121221 10:40:37 InnoDB: Could not open or create data files.

121221 10:40:37 InnoDB: If you tried to add new data files, and it failed here,

121221 10:40:37 InnoDB: you should now edit innodb_data_file_path in my.cnf back

121221 10:40:37 InnoDB: to what it was, and remove the new ibdata files InnoDB created

121221 10:40:37 InnoDB: in this failed attempt. InnoDB only wrote those files full of

121221 10:40:37 InnoDB: zeros, but did not yet use them in any way. But be careful: do not

121221 10:40:37 InnoDB: remove old data files which contain your precious data!

121221 10:40:37 [ERROR] Plugin 'InnoDB' init function returned error.

121221 10:40:37 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.

121221 10:40:37 [ERROR] Unknown/unsupported storage engine: InnoDB

121221 10:40:37 [ERROR] Aborting

121221 10:40:37 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

121221 10:40:37 mysqld_safe mysqld from pid file /data/md/open/test-db-20058.pid ended

5 google很久，看到说mysql升级到5.5的时候也报but the only supported page size in this release is=16384的错误，

于是就找原来版本5.1的安装目录，用mysqld_safe启动，ok，搞定

sudo /usr/local/mysql-5.1.56/bin/mysqld_safe --basedir=/usr/local/mysql-5.1.56/ --datadir=/data/md/open --user=mysql &

6 mysql 登录正常,验证slave：

mysql> grant all on *.* to 'tim'@'%' identified by 'xxxxx';

mysql> change master to master_user='repl', master_password='xxx#@!xxxx', master_host='90.60.201.30', master_log_file='mysql-bin.000449',master_log_pos=831708136;

mysql> start slave;

mysql> show slave status/G;

*************************** 1. row ***************************

               Slave_IO_State: 

                  Master_Host: 90.60.201.30

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000449

          Read_Master_Log_Pos: 831708239

               Relay_Log_File: mb-bbs-db3-relay-bin.003261

                Relay_Log_Pos: 3914557

        Relay_Master_Log_File: mysql-bin.000449

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

              Replicate_Do_DB: 

          Replicate_Ignore_DB: 

           Replicate_Do_Table: 

       Replicate_Ignore_Table: 

      Replicate_Wild_Do_Table: 

  Replicate_Wild_Ignore_Table: 

                   Last_Errno: 0

                   Last_Error: 

                 Skip_Counter: 0

          Exec_Master_Log_Pos: 831708239

              Relay_Log_Space: 3940542

              Until_Condition: None

               Until_Log_File: 

                Until_Log_Pos: 0

           Master_SSL_Allowed: No

           Master_SSL_CA_File: 

           Master_SSL_CA_Path: 

              Master_SSL_Cert: 

            Master_SSL_Cipher: 

               Master_SSL_Key: 

        Seconds_Behind_Master: 0

Master_SSL_Verify_Server_Cert: No

                Last_IO_Errno: 0

                Last_IO_Error: 

               Last_SQL_Errno: 0

               Last_SQL_Error: 

1 row in set (0.00 sec)

ERROR: 

No query specified