MySQL5.7 开始支持多源复制,也就是多主一从的复制架构:
多源复制是支持 GTID 和 Binlog+Position,我这里是 GTID 复制。
Slave:10.157.26.134:3307
Master2:10.157.26.133:3307
Master1:10.157.26.132:3307
实验环境:
... ...
4、数据统计:后期的一些数据统计,需要将所有的库汇总在一起。
3、减少成本:不需要每个库都做一个实例,也减少了 DBA 的维护成本;
2、备份:直接在这个从库中做备份,不影响线上的数据库;
1、灾备作用:将各个库汇总在一起,就算是其他库都挂了(整个机房都无法连接了),还有最后一个救命稻草;
使用多源复制的考虑:
MySQL5.7 的安装这里不再介绍,可以查看Ubuntu 16.04 上安装 MySQL 5.7 教程 http://www.linuxidc.com/Linux/2017-05/143864.htm
CentOS 7.2 安装 MySQL 5.7.13 http://www.linuxidc.com/Linux/2017-03/141300.htm
CentOS 7 源码安装 MySQL 5.7.17 http://www.linuxidc.com/Linux/2017-02/140133.htm
CentOS 6.6 下 RPM 方式安装 MySQL 5.7.9 http://www.linuxidc.com/Linux/2017-02/140203.htm
Master1 和 Master2:
一、配置文件:
- #GTID
- gtid-mode= on
- binlog_gtid_simple_recovery=1
- enforce_gtid_consistency=1
- binlog_format = row
- skip_slave_start = 1
- log-bin= /data/mysql/mysql_3307/logs/binlog/mysql-bin
Slave:
- #binlog
- binlog_format = row
- server-id= 1343307
- log-bin= /data/mysql/mysql_3307/logs/binlog/mysql-bin
- #GTID
- gtid-mode= on
- binlog_gtid_simple_recovery=1
- enforce_gtid_consistency=1
- #修改MySQL存储master-info和relay-info的方式,即从文件存储改为表存储
- master_info_repository=TABLE
- relay_log_info_repository=TABLE
- replicate_ignore_db=mysql#忽略mysql库的同步
- skip_slave_start = 1
二、主库创建复制账号:
- Master1:grant replication slave,
- replication client on * . * to sampson_132@'10.157.26.%'identified by 'sampson_132';
- Master2:grant replication slave,
- replication client on * . * to sampson_133@'10.157.26.%'identified by 'sampson_133';
三:从库启动复制:
也可以 start slave for channel 'Master_132'启动单个 channel 的复制。
- mysql > change master to master_host = '10.157.26.132',
- master_port = 3307,
- master_user = 'sampson_132',
- master_password = 'sampson_132',
- master_auto_position = 1
- for channel 'Master_132';
- mysql > change master to master_host = '10.157.26.133',
- master_port = 3307,
- master_user = 'sampson_133',
- master_password = 'sampson_133',
- master_auto_position = 1
- for channel 'Master_133';
- mysql > start slave;
【也可以直接 show slave status for channel 'Master_132' \G 查看各个 channel 的复制状态】
四:查看 slave 状态
- mysql> show slave status\G
- *************************** 1. row***************************
- Slave_IO_State: Waiting formasterto send event
- Master_Host: 10.157.26.132
- Master_User: sampson_132
- Master_Port: 3307
- Connect_Retry: 60
- Master_Log_File: mysql-bin.000001
- Read_Master_Log_Pos: 154
- Relay_Log_File: relay_log-master_132.000002
- Relay_Log_Pos: 367
- Relay_Master_Log_File: mysql-bin.000001
- Slave_IO_Running: Yes
- Slave_SQL_Running: Yes
- Replicate_Do_DB:
- Replicate_Ignore_DB: mysql
- 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: 579
- 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: 1323307
- Master_UUID: 8785129a-3ace-11e7-9f13-fa163e48cafd
- Master_Info_File: mysql.slave_master_info
- SQL_Delay: 0
- SQL_Remaining_Delay: NULL
- Slave_SQL_Running_State: Slave has read allrelaylog; waitingfor more updates
- Master_Retry_Count: 86400
- Master_Bind:
- Last_IO_Error_Timestamp:
- Last_SQL_Error_Timestamp:
- Master_SSL_Crl:
- Master_SSL_Crlpath:
- Retrieved_Gtid_Set:
- Executed_Gtid_Set:
- Auto_Position: 1
- Replicate_Rewrite_DB:
- Channel_Name: master_132
- Master_TLS_Version:
- *************************** 2. row***************************
- Slave_IO_State: Waiting formasterto send event
- Master_Host: 10.157.26.133
- Master_User: sampson_133
- Master_Port: 3307
- Connect_Retry: 60
- Master_Log_File: mysql-bin.000001
- Read_Master_Log_Pos: 154
- Relay_Log_File: relay_log-master_133.000002
- Relay_Log_Pos: 367
- Relay_Master_Log_File: mysql-bin.000001
- Slave_IO_Running: Yes
- Slave_SQL_Running: Yes
- Replicate_Do_DB:
- Replicate_Ignore_DB: mysql
- 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: 579
- 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: 1333307
- Master_UUID: 3d5ae510-3acf-11e7-82a4-fa163e8e91ad
- Master_Info_File: mysql.slave_master_info
- SQL_Delay: 0
- SQL_Remaining_Delay: NULL
- Slave_SQL_Running_State: Slave has read allrelaylog; waitingfor more updates
- Master_Retry_Count: 86400
- Master_Bind:
- Last_IO_Error_Timestamp:
- Last_SQL_Error_Timestamp:
- Master_SSL_Crl:
- Master_SSL_Crlpath:
- Retrieved_Gtid_Set:
- Executed_Gtid_Set:
- Auto_Position: 1
- Replicate_Rewrite_DB:
- Channel_Name: master_133
- Master_TLS_Version:
- 2rowsin set(0.01sec)
通过查看 performance_schema 相关的表查看同步状态:
- mysql> select * from performance_schema.replication_connection_status\G
- *************************** 1. row***************************
- CHANNEL_NAME: master_132
- GROUP_NAME:
- SOURCE_UUID: 8785129a-3ace-11e7-9f13-fa163e48cafd
- THREAD_ID: 89
- SERVICE_STATE: ON
- COUNT_RECEIVED_HEARTBEATS: 1
- LAST_HEARTBEAT_TIMESTAMP: 2017-05-17 16:59:45
- RECEIVED_TRANSACTION_SET:
- LAST_ERROR_NUMBER: 0
- LAST_ERROR_MESSAGE:
- LAST_ERROR_TIMESTAMP: 0000-00-00 00:00:00
- *************************** 2. row***************************
- CHANNEL_NAME: master_133
- GROUP_NAME:
- SOURCE_UUID: 3d5ae510-3acf-11e7-82a4-fa163e8e91ad
- THREAD_ID: 91
- SERVICE_STATE: ON
- COUNT_RECEIVED_HEARTBEATS: 1
- LAST_HEARTBEAT_TIMESTAMP: 2017-05-17 16:59:45
- RECEIVED_TRANSACTION_SET:
- LAST_ERROR_NUMBER: 0
- LAST_ERROR_MESSAGE:
- LAST_ERROR_TIMESTAMP: 0000-00-00 00:00:00
- 2rowsin set(0.01sec)
Master1 建库建表并插入数据:
五、数据同步检查:
- mysql>CREATE DATABASE /*!32312 IF NOT EXISTS*/`sampson_132`/*!40100 DEFAULT CHARACTER SET utf8mb4 */;
- mysql>use sampson_132
- mysql> create tablet_132(idint primary keyauto_increment,namevarchar(20)not null);
- mysql> insert intot_132(id,name)values(1,'132'),(2,'132'),(3,'132');
- mysql> select * from t_132;
- +----+------+
- |id|name|
- +----+------+
- | 1 | 132 |
- | 2 | 132 |
- | 3 | 132 |
- +----+------+
- 3rowsin set(0.00sec)
Master2 建库建表并插入数据:
- mysql> CREATE DATABASE /*!32312 IF NOT EXISTS*/`sampson_133`/*!40100 DEFAULT CHARACTER SET utf8mb4 */;
- mysql> use sampson_133
- mysql> create tablet_133(idint primary keyauto_increment,namevarchar(20)not null);
- mysql> insert intot_133(id,name)values(1,'133'),(2,'133'),(3,'133');
- mysql> select * from sampson_133.t_133;
- +----+------+
- |id|name|
- +----+------+
- | 1 | 133 |
- | 2 | 133 |
- | 3 | 133 |
- +----+------+
- 3rowsin set(0.00sec)
Slave 查看数据是否同步:
- mysql> show databases;
- +--------------------+
- | Database |
- +--------------------+
- |information_schema|
- |mysql|
- |performance_schema|
- |sampson_132|
- |sampson_133|
- |sys|
- +--------------------+
- 6rowsin set(0.00 sec)
- mysql> select * from sampson_132.t_132;
- +----+------+
- |id|name|
- +----+------+
- | 1 | 132 |
- | 2 | 132 |
- | 3 | 132 |
- +----+------+
- 3rowsin set(0.00 sec)
- mysql> select * from sampson_133.t_133;
- +----+------+
- |id|name|
- +----+------+
- | 1 | 133 |
- | 2 | 133 |
- | 3 | 133 |
- +----+------+
- 3rowsin set(0.00sec)
再次查看从库状态:
- mysql> show slave status\G
- *************************** 1. row***************************
- Slave_IO_State: Waiting formasterto send event
- Master_Host: 10.157.26.132
- Master_User: sampson_132
- Master_Port: 3307
- Connect_Retry: 60
- Master_Log_File: mysql-bin.000001
- Read_Master_Log_Pos: 930
- Relay_Log_File: relay_log-master_132.000002
- Relay_Log_Pos: 1143
- Relay_Master_Log_File: mysql-bin.000001
- Slave_IO_Running: Yes
- Slave_SQL_Running: Yes
- Replicate_Do_DB:
- Replicate_Ignore_DB: mysql
- 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: 930
- Relay_Log_Space: 1355
- 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: 1323307
- Master_UUID: 8785129a-3ace-11e7-9f13-fa163e48cafd
- Master_Info_File: mysql.slave_master_info
- SQL_Delay: 0
- SQL_Remaining_Delay: NULL
- Slave_SQL_Running_State: Slave has read allrelaylog; waitingfor more updates
- Master_Retry_Count: 86400
- Master_Bind:
- Last_IO_Error_Timestamp:
- Last_SQL_Error_Timestamp:
- Master_SSL_Crl:
- Master_SSL_Crlpath:
- Retrieved_Gtid_Set: 8785129a-3ace-11e7-9f13-fa163e48cafd:1-3
- Executed_Gtid_Set: 3d5ae510-3acf-11e7-82a4-fa163e8e91ad:1-3,
- 8785129a-3ace-11e7-9f13-fa163e48cafd:1-3
- Auto_Position: 1
- Replicate_Rewrite_DB:
- Channel_Name: master_132
- Master_TLS_Version:
- *************************** 2. row***************************
- Slave_IO_State: Waiting formasterto send event
- Master_Host: 10.157.26.133
- Master_User: sampson_133
- Master_Port: 3307
- Connect_Retry: 60
- Master_Log_File: mysql-bin.000001
- Read_Master_Log_Pos: 930
- Relay_Log_File: relay_log-master_133.000002
- Relay_Log_Pos: 1143
- Relay_Master_Log_File: mysql-bin.000001
- Slave_IO_Running: Yes
- Slave_SQL_Running: Yes
- Replicate_Do_DB:
- Replicate_Ignore_DB: mysql
- 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: 930
- Relay_Log_Space: 1355
- 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: 1333307
- Master_UUID: 3d5ae510-3acf-11e7-82a4-fa163e8e91ad
- Master_Info_File: mysql.slave_master_info
- SQL_Delay: 0
- SQL_Remaining_Delay: NULL
- Slave_SQL_Running_State: Slave has read allrelaylog; waitingfor more updates
- Master_Retry_Count: 86400
- Master_Bind:
- Last_IO_Error_Timestamp:
- Last_SQL_Error_Timestamp:
- Master_SSL_Crl:
- Master_SSL_Crlpath:
- Retrieved_Gtid_Set: 3d5ae510-3acf-11e7-82a4-fa163e8e91ad:1-3
- Executed_Gtid_Set: 3d5ae510-3acf-11e7-82a4-fa163e8e91ad:1-3,
- 8785129a-3ace-11e7-9f13-fa163e48cafd:1-3
- Auto_Position: 1
- Replicate_Rewrite_DB:
- Channel_Name: master_133
- Master_TLS_Version:
- 2rowsin set(0.00sec)
来源: http://www.linuxidc.com/Linux/2017-05/143929.htm