mysql主从之多元复制

实验环境:

192.168.132.121   master1

192.168.132.122   master2

192.168.132.123   slave

使用gtid的方式

两个主分别是192.168.132.121和192.168.132.122,一个从端192.168.132.123分别从两个主端同步数据

192.168.132.121 master1配置

[root@master ~]# cat /etc/my.cnf
[mysqld]
bind-address=0.0.0.0
port=3306
datadir=/data/mysql
socket=/data/mysql/mysql.sock
user=mysql
skip-name-resolve
slow_query_log=on
long_query_time=1
slow_query_log_file=/data/mysql/mysql-slow.log
innodb-file-per-table=1
innodb_flush_log_at_trx_commit = 2
log_warnings = 1
connect_timeout = 60
net_read_timeout = 120
performance_schema_max_table_instances = 400
server-id = 1
gtid_mode=on
enforce_gtid_consistency=on
log-slave-updates=1
log-bin=master-bin
log-bin-index = master-bin.index
relay-log = relay-log
relay-log-index = relay-log.index
binlog_format=row
auto_increment_offset=1
auto_increment_increment=3

[mysqld_safe]
log-error=/data/mysql/mysqld.log
pid-file=/data/mysql/mysqld.pid

[root@master ~]# mysql -uroot -p123456
mysql>  grant replication slave on *.* to 'replication'@'192.168.132.122' identified by '1234567';
mysql> grant replication slave on *.* to 'replication'@'192.168.132.123' identified by '1234567';

192.168.132.122 master2配置

[root@master2 ~]# cat /etc/my.cnf
[mysqld]
bind-address=0.0.0.0
port=3306
datadir=/data/mysql
socket=/data/mysql/mysql.sock
user=mysql
skip-name-resolve
slow_query_log=on
long_query_time=1
slow_query_log_file=/data/mysql/mysql-slow.log
innodb-file-per-table=1
innodb_flush_log_at_trx_commit = 2
log_warnings = 1
connect_timeout = 60
net_read_timeout = 120
performance_schema_max_table_instances = 400
server-id = 2
gtid_mode=on
enforce_gtid_consistency=on
log-slave-updates=1
log-bin=master-bin
log-bin-index = master-bin.index
relay-log = relay-log
relay-log-index = relay-log.index
binlog_format=row
auto_increment_offset=2
auto_increment_increment=3

[mysqld_safe]
log-error=/data/mysql/mysqld.log
pid-file=/data/mysql/mysqld.pid

[root@master2 ~]# mysql -uroot -p123456
mysql>  grant replication slave on *.* to 'replication'@'192.168.132.121' identified by '1234567';
mysql>  grant replication slave on *.* to 'replication'@'192.168.132.123' identified by '1234567';

192.168.132.123 slave配置

[root@slave ~]# cat /etc/my.cnf
[mysqld]
bind-address=0.0.0.0
port=3306
datadir=/data/mysql
socket=/data/mysql/mysql.sock
user=mysql
skip-name-resolve
slow_query_log=on
long_query_time=1
slow_query_log_file=/data/mysql/mysql-slow.log
innodb-file-per-table=1
innodb_flush_log_at_trx_commit = 2
log_warnings = 1
connect_timeout = 60
net_read_timeout = 120
performance_schema_max_table_instances = 400
server-id = 3
gtid_mode=on
enforce_gtid_consistency=on
log-slave-updates=1
log-bin=master-bin
log-bin-index = master-bin.index
relay-log = relay-log
relay-log-index = relay-log.index
binlog_format=row
auto_increment_offset=3
auto_increment_increment=3

[mysqld_safe]
log-error=/data/mysql/mysqld.log
pid-file=/data/mysql/mysqld.pid
[root@slave ~]# mysql -uroot -p123456

配置从库

mysql> change master to master_host='192.168.132.121',master_user='replication',master_port=3306,master_password='1234567',master_auto_position=1 for channel 'master-1';
ERROR 3077 (HY000): To have multiple channels, repository cannot be of type FILE; Please check the repository configuration and convert them to TABLE.
mysql> show variables like '%repository%';
+---------------------------+-------+
| Variable_name | Value |
+---------------------------+-------+
| master_info_repository | FILE |
| relay_log_info_repository | FILE |
+---------------------------+-------+

需要设置convert表

/etc/my.cnf      
[mysqld]    #添加
master_info_repository=TABLE
relay_log_info_repository=TABLE

[root@slave ~]# systemctl restart mysqld

[root@slave ~]# mysql -uroot -p123456

mysql> show variables like '%repository%';
+---------------------------+-------+
| Variable_name             | Value |
+---------------------------+-------+
| master_info_repository    | TABLE |
| relay_log_info_repository | TABLE |
+---------------------------+-------+
mysql> change master to master_host='192.168.132.121',master_user='replication',master_port=3306,master_password='1234567',master_auto_position=1 for channel 'master-1';
mysql> change master to master_host='192.168.132.122',master_user='replication',master_port=3306,master_password='1234567',master_auto_position=1 for channel 'master-2';

查看从端状态

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.132.121
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: master-bin.000002
          Read_Master_Log_Pos: 1021
               Relay_Log_File: relay-log-master@002d1.000002
                Relay_Log_Pos: 1236
        Relay_Master_Log_File: master-bin.000002
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          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: 1021
              Relay_Log_Space: 1450
              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: 1
                  Master_UUID: 63a7f26f-a196-11e9-a2b2-000c2991dd19
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for 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: 63a7f26f-a196-11e9-a2b2-000c2991dd19:1-3
            Executed_Gtid_Set: 5ad46c94-a197-11e9-8513-000c29f004c9:1,
63a7f26f-a196-11e9-a2b2-000c2991dd19:1-3,
662134df-a196-11e9-b432-000c2963fd11:1-4
                Auto_Position: 1
         Replicate_Rewrite_DB: 
                 Channel_Name: master-1   #通道1,连接master1
           Master_TLS_Version: 
*************************** 2. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.132.122
                  Master_User: replication
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: master-bin.000002
          Read_Master_Log_Pos: 1270
               Relay_Log_File: relay-log-master@002d2.000002
                Relay_Log_Pos: 1485
        Relay_Master_Log_File: master-bin.000002
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes
              Replicate_Do_DB: 
          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: 1270
              Relay_Log_Space: 1699
              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: 2
                  Master_UUID: 662134df-a196-11e9-b432-000c2963fd11
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay: 0
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for 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: 662134df-a196-11e9-b432-000c2963fd11:1-4
            Executed_Gtid_Set: 5ad46c94-a197-11e9-8513-000c29f004c9:1,
63a7f26f-a196-11e9-a2b2-000c2991dd19:1-3,
662134df-a196-11e9-b432-000c2963fd11:1-4
                Auto_Position: 1
         Replicate_Rewrite_DB: 
                 Channel_Name: master-2   #通道2,连接master2
           Master_TLS_Version: 

查看进程

mysql> show processlist;
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
| Id | User        | Host      | db   | Command | Time | State                                                  | Info             |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
|  2 | root        | localhost | NULL | Query   |    0 | starting                                               | show processlist |
|  3 | system user |           | NULL | Connect |  140 | Waiting for master to send event                       | NULL             |
|  4 | system user |           | NULL | Connect | 2130 | Slave has read all relay log; waiting for more updates | NULL             |
|  5 | system user |           | NULL | Connect |  140 | Waiting for master to send event                       | NULL             |
|  6 | system user |           | NULL | Connect | 1954 | Slave has read all relay log; waiting for more updates | NULL             |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+

验证

master1
mysql> create database master1;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| master1            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
master2
mysql> create database master2;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| master2            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
slave查看    #已经同步
mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| master1            |
| master2            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+

多源复制,配置完成