Innobackupex を使用して MySQL マスター/スレーブ アーキテクチャを迅速に構築 (修復) します。

1、基于主库做一个完整备份
# mkdir -p /log/bakforslave
# innobackupex --user=root -password=*** --socket=/tmp/mysql.sock \
--defaults-file=/etc/my.cnf /log/bakforslave --parallel=3 --safe-slave-backup --no-timestamp 

2、复制数据库到备机
# tar -czvf bakforslave.tar.gz ./bakforslave/
# scp bakforslave.tar.gz robin@172.16.10.51:~
# scp /etc/my.cnf robin@172.16.10.51:~/mymaster.cnf

3、在备机上恢复
###备机解压打包的备份文件
# mv /home/robin/bakforslave.tar.gz /data
# cd /data
# tar -xvf bakforslave.tar.gz

### prepare 备份
# innobackupex --user=root -password=*** --socket=/tmp/mysql.sock --defaults-file=/home/robin/mymaster.cnf \
 --apply-log --use-memory=4GB /data/bakforslave

###如果是修复从库，从库为启动状态应先停止从库，再做如下操作，否则可以跳过 
# service mysqld stop 

###还原备份的数据文件
# mv mysqldata mysqldatabk
# mv bakforslave mysqldata
# chown -R mysql:mysql mysqldata

###如果是新搭建的从库，此时可以修改主库的my.cnf为本机的my.cnf，
###如果为修复，则可以直接使用原有的配置文件或根据需要修改。
# cp /home/robin/mymaster.cnf /etc/my.cnf
# vi /etc/my.cnf         ###此处应修改使用一个不同的server_id，同时可以根据需要修改相关路径及端口配置等。
# service mysqld start   ###修改完毕后可以启动mysqld

4、主库授权用于复制的用户
mysql> grant replication slave,replication client on *.* to repl2@'172.16.10.%' identified by '***';

### 验证shell 提示符下登陆到主库
# mysql -urepl2 -p -h172.16.10.88

5、启动slave
# more /data/mysqldata/xtrabackup_binlog_info
mysql-bin.000136        73752825

mysql> CHANGE MASTER TO
MASTER_HOST='172.16.10.88',            --Author: Leshami
MASTER_USER='repl2',                   --Blog  : //m.sbmmt.com/
MASTER_PASSWORD='***',
MASTER_LOG_FILE='mysql-bin.000136',
MASTER_LOG_POS=73752825;

mysql> start slave;

6、验证结果
mysql> show slave status \G
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 172.16.10.88
                  Master_User: repl2
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql-bin.000136
          Read_Master_Log_Pos: 96592981
               Relay_Log_File: mysqld-relay-bin.000002
                Relay_Log_Pos: 72113
        Relay_Master_Log_File: mysql-bin.000136
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: test,bs_com,bs_sysmsg,bs_bak
          Replicate_Ignore_DB: mysql
           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: 73824655
              Relay_Log_Space: 22840613
              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: 3815
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno: 0
                Last_IO_Error: 
               Last_SQL_Errno: 0
               Last_SQL_Error: 
  Replicate_Ignore_Server_Ids: 
             Master_Server_Id: 2
                  Master_UUID: afd6bca4-6636-11e3-9d60-74867ae1c47c
             Master_Info_File: /data/mysqldata/master.info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: updating
           Master_Retry_Count: 86400
                  Master_Bind: 
      Last_IO_Error_Timestamp: 
     Last_SQL_Error_Timestamp: 
               Master_SSL_Crl: 
           Master_SSL_Crlpath: 
           Retrieved_Gtid_Set: 
            Executed_Gtid_Set: 
                Auto_Position: 0
1 row in set (0.00 sec)