数据库MySQL5.7.12的Replication配置和之前MySQL5.1有所不同，目前尚不可知是从哪个版本开始变更的-待后续学习，本文主要讲如何做Replication。
MySQL 5.7.12 支持多源复制、多线程复制，当前猜测是因为多源复制取消了my.cnf中配置master-host之类，采用CHANGE MASTER TO 可配置多个源。
- master 配置
my.cnf
server_id = 2123
log-bin=mysql-bin
binlog-do-db=test
replicate-same-server-id
新建同步账号
/opt/mysql/bin/mysql -uroot -p123456 --socket=/opt/mysql/mysql.sock -e "create user rep identified by 'admin2012';"
/opt/mysql/bin/mysql -uroot -p123456 --socket=/opt/mysql/mysql.sock -e "grant replication slave on *.* to 'rep'@'192.168.220.%' identified by 'admin2012';"
启动mysql
/opt/mysql/bin/mysqld --defaults-file=/opt/mysql/my.cnf --user=root
登录
mysql -uroot -p123456 --socket=/opt/mysql/mysql.sock
检查master
mysql> SHOW MASTER STATUS;
+------------------+----------+--------------+------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000001 | 154 | test | | |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
- slave 配置
修改配置my.cnf
server_id = 2126
启动mysql
/opt/mysql/bin/mysqld --defaults-file=/opt/mysql/my.cnf --user=root
登录
mysql -uroot -p123456 --socket=/opt/mysql/mysql.sock
设置master
mysql>CHANGE MASTER TO MASTER_HOST='192.168.220.123',MASTER_USER='rep', MASTER_PASSWORD='admin2012',MASTER_LOG_FILE='mysql-bin.000001',MASTER_LOG_POS=154;
启动slave
mysql>start slave
检查slave
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.220.123
Master_User: rep
Master_Port: 3307
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 154
Relay_Log_File: mysqld-relay-bin.000002
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: test
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: 154
Relay_Log_Space: 528
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: 2123
Master_UUID: 44f02265-5a22-11e6-a7d6-1418774a0abb
Master_Info_File: /opt/mysql/data/master.info
SQL_Delay: 0
