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=
datadir=/data/mysql
socket=/data/mysql/mysql.sock
user=mysql
skip-name-resolve
slow_query_log=on
long_query_time=
slow_query_log_file=/data/mysql/mysql-slow.log
innodb-file-per-table=
innodb_flush_log_at_trx_commit =
log_warnings =
connect_timeout =
net_read_timeout =
performance_schema_max_table_instances =
server-id =
gtid_mode=on
enforce_gtid_consistency=on
log-slave-updates=
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=
auto_increment_increment=

[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 '';
mysql> grant replication slave on *.* to 'replication'@'192.168.132.123' identified by '';

192.168.132.122 master2配置

[root@master2 ~]# cat /etc/my.cnf
[mysqld]
bind-address=0.0.0.0
port=
datadir=/data/mysql
socket=/data/mysql/mysql.sock
user=mysql
skip-name-resolve
slow_query_log=on
long_query_time=
slow_query_log_file=/data/mysql/mysql-slow.log
innodb-file-per-table=
innodb_flush_log_at_trx_commit =
log_warnings =
connect_timeout =
net_read_timeout =
performance_schema_max_table_instances =
server-id =
gtid_mode=on
enforce_gtid_consistency=on
log-slave-updates=
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=
auto_increment_increment=

[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 '';
mysql>  grant replication slave on *.* to 'replication'@'192.168.132.123' identified by '';

192.168.132.123 slave配置

[root@slave ~]# cat /etc/my.cnf
[mysqld]
bind-address=0.0.0.0
port=
datadir=/data/mysql
socket=/data/mysql/mysql.sock
user=mysql
skip-name-resolve
slow_query_log=on
long_query_time=
slow_query_log_file=/data/mysql/mysql-slow.log
innodb-file-per-table=
innodb_flush_log_at_trx_commit =
log_warnings =
connect_timeout =
net_read_timeout =
performance_schema_max_table_instances =
server-id =
gtid_mode=on
enforce_gtid_consistency=on
log-slave-updates=
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=
auto_increment_increment=

[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=,master_password='',master_auto_position= for channel 'master-1';
ERROR  (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=,master_password='',master_auto_position= for channel 'master-1';
mysql> change master to master_host='192.168.132.122',master_user='replication',master_port=,master_password='',master_auto_position= for channel 'master-2';

查看从端状态

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

mysql> show slave status\G;
*************************** . row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.132.121
                  Master_User: replication
                  Master_Port:
                Connect_Retry:
              Master_Log_File: master-bin.
          Read_Master_Log_Pos:
               Relay_Log_File: relay-log-master@002d1.
                Relay_Log_Pos:
        Relay_Master_Log_File: master-bin.
             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:
                   Last_Error:
                 Skip_Counter:
          Exec_Master_Log_Pos:
              Relay_Log_Space:
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos:
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master:
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno:
                Last_IO_Error:
               Last_SQL_Errno:
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id:
                  Master_UUID: 63a7f26f-a196-11e9-a2b2-000c2991dd19
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay:
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
           Master_Retry_Count:
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 63a7f26f-a196-11e9-a2b2-000c2991dd19:-
            Executed_Gtid_Set: 5ad46c94-a197-11e9--000c29f004c9:,
63a7f26f-a196-11e9-a2b2-000c2991dd19:-,
662134df-a196-11e9-b432-000c2963fd11:-
                Auto_Position:
         Replicate_Rewrite_DB:
                 Channel_Name: master-1   #通道1,连接master1
           Master_TLS_Version:
*************************** . row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.132.122
                  Master_User: replication
                  Master_Port:
                Connect_Retry:
              Master_Log_File: master-bin.
          Read_Master_Log_Pos:
               Relay_Log_File: relay-log-master@002d2.
                Relay_Log_Pos:
        Relay_Master_Log_File: master-bin.
             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:
                   Last_Error:
                 Skip_Counter:
          Exec_Master_Log_Pos:
              Relay_Log_Space:
              Until_Condition: None
               Until_Log_File:
                Until_Log_Pos:
           Master_SSL_Allowed: No
           Master_SSL_CA_File:
           Master_SSL_CA_Path:
              Master_SSL_Cert:
            Master_SSL_Cipher:
               Master_SSL_Key:
        Seconds_Behind_Master:
Master_SSL_Verify_Server_Cert: No
                Last_IO_Errno:
                Last_IO_Error:
               Last_SQL_Errno:
               Last_SQL_Error:
  Replicate_Ignore_Server_Ids:
             Master_Server_Id:
                  Master_UUID: 662134df-a196-11e9-b432-000c2963fd11
             Master_Info_File: mysql.slave_master_info
                    SQL_Delay:
          SQL_Remaining_Delay: NULL
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
           Master_Retry_Count:
                  Master_Bind:
      Last_IO_Error_Timestamp:
     Last_SQL_Error_Timestamp:
               Master_SSL_Crl:
           Master_SSL_Crlpath:
           Retrieved_Gtid_Set: 662134df-a196-11e9-b432-000c2963fd11:-
            Executed_Gtid_Set: 5ad46c94-a197-11e9--000c29f004c9:,
63a7f26f-a196-11e9-a2b2-000c2991dd19:-,
662134df-a196-11e9-b432-000c2963fd11:-
                Auto_Position:
         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             |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+
|   | root        | localhost | NULL | Query   |     | starting                                               | show processlist |
|   | system user |           | NULL | Connect |   | Waiting for master to send event                       | NULL             |
|   | system user |           | NULL | Connect |  | Slave has read all relay log; waiting for more updates | NULL             |
|   | system user |           | NULL | Connect |   | Waiting for master to send event                       | NULL             |
|   | system user |           | NULL | Connect |  | Slave has read all relay log; waiting for more updates | NULL             |
+----+-------------+-----------+------+---------+------+--------------------------------------------------------+------------------+

验证

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

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| master1            |
| mysql              |
| performance_schema |
| sys                |
+--------------------+
master2
mysql> create database master2;
Query OK,  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