linuxCentos系统下mysql主从配置

1.准备两台装好mysql的机器

mysql单机安装步骤请参考https://my.oschina.net/qbj/blog/1850086

我的两台主机分别为 10.20.4.58 和10.20.4.59

58为mater机器  59为slave机器

在msater上的mysql创建一个用户

mysql> grant replication slave on *.* to &＃39;repl&＃39;&＃64;&＃39;10.20.4.59&＃39; identified by &＃39;{yourPassword}&＃39;;
Query OK, 0 rows affected, 1 warning (0.00 sec)mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

{yourPassword} 自己设定的密码

2. 修改master(58)的my.cnf

server-id&＃61;58
log-bin&＃61;mysqlbin-log
binlog_format&＃61;mixedread-only&＃61;0
binlog-ignore-db&＃61;information_schema
binlog-ignore-db&＃61;mysql
binlog-ignore-db&＃61;performance_schema
binlog-ignore-db&＃61;sys
auto_increment_increment&＃61;2
auto_increment_offset&＃61;1

重启mysql服务

3. 修改slave&＃xff08;59&＃xff09;的my.cnf

server-id&＃61;59
log-bin&＃61;mysqlbin-log
binlog_format&＃61;mixedreplicate-ignore-db&＃61;information_schema
replicate-ignore-db&＃61;mysql
replicate-ignore-db&＃61;performance_schema
replicate-ignore-db&＃61;syslog-slave-updates&＃61;ON

重启mysql服务

4 . 查看master机器的状态&＃xff0c;在mysql下运行

mysql> show master status\G
*************************** 1. row ***************************File: mysqlbin-log.000003Position: 1270Binlog_Do_DB: Binlog_Ignore_DB: information_schema,mysql,performance_schema,sys
Executed_Gtid_Set:
1 row in set (0.00 sec)


记住 Position和File

5. 在slave机器配置master的信息

mysql> CHANGE MASTER TO MASTER_HOST&＃61;&＃39;10.20.4.58&＃39;, MASTER_USER&＃61;&＃39;repl&＃39;, MASTER_PASSWORD&＃61;&＃39;{yourPassword}&＃39;, MASTER_LOG_FILE&＃61;&＃39;mysqlbin-log.000003&＃39;, MASTER_LOG_POS&＃61;1270;
Query OK, 0 rows affected, 2 warnings (0.02 sec)

查看slave状态&＃xff0c;如果 Slave_IO_Running和 Slave_SQL_Running都为Yes,说明配置就是成功了。

mysql> show slave status\G
*************************** 1. row ***************************Slave_IO_State: Waiting for master to send eventMaster_Host: 10.20.4.58Master_User: replMaster_Port: 3306Connect_Retry: 60Master_Log_File: mysqlbin-log.000004Read_Master_Log_Pos: 1270Relay_Log_File: microService59-relay-bin.000002Relay_Log_Pos: 323Relay_Master_Log_File: mysqlbin-log.000003Slave_IO_Running: YesSlave_SQL_Running: YesReplicate_Do_DB: Replicate_Ignore_DB: information_schema,mysql,performance_schema,sysReplicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0Last_Error: Skip_Counter: 0Exec_Master_Log_Pos: 154Relay_Log_Space: 539Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0Master_SSL_Allowed: NoMaster_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: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error: Replicate_Ignore_Server_Ids: Master_Server_Id: 58Master_UUID: 24ab31cd-8738-11e8-8f03-000c290c1fa6Master_Info_File: /data/mysql/master.infoSQL_Delay: 0SQL_Remaining_Delay: NULLSlave_SQL_Running_State: Slave has read all relay log; waiting for more updatesMaster_Retry_Count: 86400Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version:
1 row in set (0.00 sec)

6. 验证

在master上创建一个表&＃xff0c;看是否能够正常同步到slave机器上。