主机上具有多个从属实例的mysql复制，中继bin不断变化

Question

我在一台主机上运行 2 个从属 mysql 实例，它们从不同主机上的主实例复制数据。所有实例都是 mysql 5.6。即使主实例没有发生任何变化，从实例的中继 bin 日志也会不断变化。 以下是slave1的show Slave status\G:

           Slave_IO_State: Waiting for master to send event
          Master_Log_File: mysql-bin.000008
      Read_Master_Log_Pos: 210424
           Relay_Log_File: mysqld1-relay-bin.000878
            Relay_Log_Pos: 354
    Relay_Master_Log_File: mysql-bin.000008
         Slave_IO_Running: Yes
        Slave_SQL_Running: Yes
                     ... : ...

过了一会儿slave1的Relay_Log_File发生了变化，

           Slave_IO_State: Waiting for master to send event
          Master_Log_File: mysql-bin.000008
      Read_Master_Log_Pos: 210424
           Relay_Log_File: mysqld1-relay-bin.001374
            Relay_Log_Pos: 354
    Relay_Master_Log_File: mysql-bin.000008
         Slave_IO_Running: Yes
        Slave_SQL_Running: Yes
                     ... : ...

但没有对 master、slave1 或 Slave2 进行任何更改。 Slave2 也发生了同样的事情。 我怀疑这两个奴隶以某种方式共享他们不应该共享的配置/设置，但我无法确定出了什么问题。 my.cnf 文件有

# The MySQL server mysqld1
[mysqld1]
user            = mysql
port            = 3301
pid-file        = /usr/local/mysql1/data/mysqld1.pid
socket          = /tmp/mysql1.sock
datadir         = /usr/local/mysql1/data
log-bin=mysql-bin
binlog_format=mixed
gtid-mode=on
disable-gtid-unsafe-statements=true
log-slave-updates=true # needed to enable gtid
sync-master-info = 1
master-info-repository=TABLE
relay-log-info-repository=TABLE
server-id       = 2
innodb_data_home_dir = /usr/local/mysql1/data
innodb_log_group_home_dir = /usr/local/mysql1/data
innodb_flush_log_at_trx_commit = 1
sync_binlog=1

[mysqld2]
user            = mysql
port            = 3302
pid-file        = /usr/local/mysql2/data/mysqld2.pid
socket          = /tmp/mysql2.sock
datadir         = /usr/local/mysql2/data
log-bin=mysql-bin
binlog_format=mixed
gtid-mode=on
disable-gtid-unsafe-statements=true
log-slave-updates=true # needed to enable gtid
sync-master-info = 1
master-info-repository=TABLE
relay-log-info-repository=TABLE
server-id       = 3
innodb_data_home_dir = /usr/local/mysql2/data
innodb_log_group_home_dir = /usr/local/mysql2/data
innodb_flush_log_at_trx_commit = 1
sync_binlog=1

有人遇到过这样的事情吗？以这种方式运行多个实例是否需要中继日志的自定义命名？ 谢谢。

Answer 1

事实证明，两个从站的日志箱名称需要不同。我已将它们更改为

[mysqld1]
log-bin=mysql-bin
[mysqld2]
log-bin=mysql-bin

至

[mysqld1]
log-bin=slave1-bin
[mysqld2]
log-bin-slave2-bin

来自 Replication and auto-failover made easy with MySQL Utilities 的示例配置对此给出了提示。