总体流程是,
- A机器上配置master
- A机器授权给B机器
- B机器配置slave
前提:假设A机器之前已经开启了binlog,如配置log-bin=mysql-bin等
1, A机器上配置master
server-id = 1
#下面三项不是必须
expire_logs_days = 10
max_binlog_size = 100M
binlog_format =mixed
2, A机器授权给B机器
grant replication slave on *.* to replication@192.168.1.15 identified by '123456';
3,B机器配置slave
#默认是1,这里改为2
server-i=2
#设置需要从A上复制过来的库名
replicate-do-db=repdb
#以下不是必须
#设置B机上的binlog,跟A机器上的没有关系,也跟ms配置没有关系
log_bin=mysql-bin
#中继binlog
relay_log=mysql-relay-bin
change master to master_host='192.168.1.12', master_user='replication', master_password='123456', master_log_file='mysql-bin.000001', master_log_pos=0;
这里注意的是,尽管在A上设置的binlog是mysql-bin,生成的日志是带数字后缀的;但这里不能按照省略的写法,必须跟上后缀,希望从哪个日志开始,就跟谁的日志。
slave start
slave stop
slave reset
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.122
Master_User: replication
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 5223825
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 5223892
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB: vcread
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: 5223747
Relay_Log_Space: 5224125
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:
1 row in set (0.00 sec)
错误处理:
如果报告:
Error reading packet from server: Could not find first log file name in binary log index file
可能是因为为做正确授权,可重启A机器,即master机器上的mysql服务以重试;不行的话,重新授权,再分别重新A的mysql和B的slave