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,  rows affected (0.01 sec)  

--全局读锁
master@localhost[(none)]> flush tables with read lock;
Query OK,  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. |      |              |                  |                   |
+--------------------+----------+--------------+------------------+-------------------+
 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=,
    -> MASTER_LOG_FILE='inst3406bin.000001',
    -> MASTER_LOG_POS=;
Query OK,  rows affected,  warnings (0.01 sec)  

--启动slave
slave@localhost[(none)]> start slave;  

部分从库

master@localhost[(none)]> grant replication slave on *.* to 'repl'@'192.168.1.177' identified by 'xxx';
Query OK,  rows affected (0.01 sec)  

--全局读锁
master@localhost[(none)]> flush tables with read lock;
Query OK,  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. |      |              |                  |                   |
+--------------------+----------+--------------+------------------+-------------------+
 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=,
    -> MASTER_LOG_FILE='inst3406bin.000001',
    -> MASTER_LOG_POS=;
Query OK,  rows affected,  warnings (0.01 sec)  

--启动slave
slave@localhost[(none)]> start slave;