准备:主备库版本一致,正常安装软件。
1、主库上设置一个复制使用的账户:
mysql> grant replication slave on *.* to 'rep1'@'192.168.100.136' identified by 'dbking';
Query OK, 0 rows affected (0.18 sec)
mysql> select user,host,password from mysql.user where user='rep1';
+------+-----------------+-------------------------------------------+
| user | host | password |
+------+-----------------+-------------------------------------------+
| rep1 | 192.168.100.136 | *0E5B9DDCEF035D1E653099F4143C0F36061F7653 |
+------+-----------------+-------------------------------------------+
1 row in set (0.08 sec)
2、修改主库参数文件,开启binlog并设置slave id:
log_bin=/usr/local/mysql/data/dbking-bin.log
server_id=1
3、主数据库上设置读锁定有效:
mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)
4、然后得到主数据库上当前二进制日志文件及偏移量,为了在从库复制起点:
mysql> show master status;
+-------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+-------------------+----------+--------------+------------------+-------------------+
| dbking-bin.000001 | 120 | | | |
+-------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
5、主数据库目前已停止更新操作,现在要得到主数据库备份到从库上恢复:
[root@chavinking mysql]# tar -cvf data.dir data
6、解锁主库:
mysql> unlock tables;
Query OK, 0 rows affected (0.00 sec)
7、将主库备份恢复到从库:
[root@chavinking mysql]# mv data data1204
[root@chavinking mysql]# tar -xvf data.dir
8、修改从库my.cnf文件,设置server_id参数,server_id参数必须唯一:
server_id=2
9、从库使用--skip-slave-start启动数据库:
[root@chavinking mysql]# bin/mysqld_safe --skip-slave-start &
[1] 18389
[root@chavinking mysql]# 161202 08:50:16 mysqld_safe Logging to '/usr/local/mysql/data/chavinking.err'.
161202 08:50:16 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
10、对从库数据库服务器进行相应设置,制定复制使用账户,主库ip,端口以及开始进行复制的日志文件和位置等,具体如下:
本次试验脚本如下:
mysql> change master to
-> master_host='192.168.80.133',
-> master_user='rep1',
-> master_password='dbking',
-> master_port=3306,
-> master_log_file='dbking-bin.000001',
-> master_log_pos=120;
Query OK, 0 rows affected, 2 warnings (0.11 sec)
11、从库启动slave线程:
mysql> start slave;
Query OK, 0 rows affected (0.11 sec)
12、从库上查看配置信息:
mysql> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.80.133
Master_User: rep1
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: dbking-bin.000004
Read_Master_Log_Pos: 120
Relay_Log_File: chavinking-relay-bin.000008
Relay_Log_Pos: 284
Relay_Master_Log_File: dbking-bin.000004
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: 120
Relay_Log_Space: 510
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:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 9b92b2a8-b7e0-11e6-81e4-000c29fa5a95
Master_Info_File: /usr/local/software/mysql-5.6.24-linux-glibc2.5-x86_64/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
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)
如果其中Slave_IO_Running: NO,并且日志文件报错:
2016-12-02 11:19:37 19637 [ERROR] Slave I/O: Fatal error: The slave I/O thread stops because master and slave have equal MySQL server UUIDs; these UUIDs must be different for replication to work. Error_code: 1593
那么修改data目录下的auto.cnf文件后重启数据库即可解决。