mysql 主库有数据通过锁库做主从

master@localhost[(none)]> grant replication slave on *.* to ‘repl‘@‘192.168.1.177‘ identified by ‘xxx‘;  
Query OK, 0 rows affected (0.01 sec)  
  
--全局读锁  
master@localhost[(none)]> flush tables with read lock;  
Query OK, 0 rows affected (0.02 sec)  
  
master@localhost[(none)]> system pwd  
/data/inst3406  
  
--获取master binlog位置  
master@localhost[(none)]> show master status;  
+--------------------+----------+--------------+------------------+-------------------+  
| File               | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |  
+--------------------+----------+--------------+------------------+-------------------+  
| inst3406bin.000001 |     2169 |              |                  |                   |  
+--------------------+----------+--------------+------------------+-------------------+  
1 row in set (0.00 sec)  
  
--使用mysqldump导出实例  
master@localhost[(none)]> system mysqldump -uroot -pxxx -S /tmp/mysql3406.sock --routines --all-databases --opt >alldb.sql  
  
master@localhost[(none)]> system ls  
alldb.sql  data3406    
  
--解锁  
master@localhost[(none)]> unlock tables;  
  
master@localhost[(none)]> exit  
  
--从库上面导入dump  
[mysql@app inst3406]$ mysql -uroot -pxxx -S /tmp/mysql3506.sock <alldb.sql  
  
--从库上设置主库的相关信息(host,port等等)  
[mysql@app inst3506]$ mysqls  
slave@localhost[(none)]> change master to  
    -> MASTER_HOST=‘192.168.1.177‘,    
    -> MASTER_USER=‘repl‘,    
    -> MASTER_PASSWORD=‘xxx‘,    
    -> MASTER_PORT=3406,    
    -> MASTER_LOG_FILE=‘inst3406bin.000001‘,    
    -> MASTER_LOG_POS=2169;    
Query OK, 0 rows affected, 2 warnings (0.01 sec)  
  
--启动slave  
slave@localhost[(none)]> start slave;  

master@localhost[(none)]> grant replication slave on *.* to ‘repl‘@‘192.168.1.177‘ identified by ‘xxx‘;  
Query OK, 0 rows affected (0.01 sec)  
  
--全局读锁  
master@localhost[(none)]> flush tables with read lock;  
Query OK, 0 rows affected (0.02 sec)  
  
master@localhost[(none)]> system pwd  
/data/inst3406  
  
--获取master binlog位置  
master@localhost[(none)]> show master status;  
+--------------------+----------+--------------+------------------+-------------------+  
| File               | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |  
+--------------------+----------+--------------+------------------+-------------------+  
| inst3406bin.000001 |     2169 |              |                  |                   |  
+--------------------+----------+--------------+------------------+-------------------+  
1 row in set (0.00 sec)  
  
--使用mysqldump导出实例  
master@localhost[(none)]> system mysqldump -uroot -pxxx -S /tmp/mysql3406.sock --routines --all-databases --opt >alldb.sql  
  
master@localhost[(none)]> system ls  
alldb.sql  data3406    
  
--解锁  
master@localhost[(none)]> unlock tables;  
  
master@localhost[(none)]> exit  
  
--从库上面导入dump  
[mysql@app inst3406]$ mysql -uroot -pxxx -S /tmp/mysql3506.sock <alldb.sql  
  
--从库上设置主库的相关信息(host,port等等)  
[mysql@app inst3506]$ mysqls  
slave@localhost[(none)]> change master to  
    -> MASTER_HOST=‘192.168.1.177‘,    
    -> MASTER_USER=‘repl‘,    
    -> MASTER_PASSWORD=‘xxx‘,    
    -> MASTER_PORT=3406,    
    -> MASTER_LOG_FILE=‘inst3406bin.000001‘,    
    -> MASTER_LOG_POS=2169;    
Query OK, 0 rows affected, 2 warnings (0.01 sec)  
  
--启动slave  
slave@localhost[(none)]> start slave;