利用Xtrabackup备份集合恢复一台从库的过程_MySQL

利用Xtrabackup备份集合恢复一台从库的过程

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