我目前正在尝试让 MariaDB 10.2.9 作为 mysql 5.5 master 的从属运行,但我不断收到相同的错误(Last_IO_Errno:1595,中继日志写入失败:无法对来自 master 的事件进行排队)
由于主站和从站之间的版本存在一些差异,我必须设置
set global binlog_checksum='NONE';
总而言之,我获取了 master 的 mysqldump,读取了 log_pos/file 并
SET GLOBAL server_id=2;
CHANGE MASTER TO
MASTER_HOST='10.145.46.11',MASTER_USER='replicant',MASTER_PASSWORD='...',
MASTER_LOG_FILE='mysql-bin.000042', MASTER_LOG_POS=107;
start slave;
但是 IO 线程根本不会启动,mariadb.log 说:
...
2017-10-31 11:44:41 140026338711296 [Note] Slave SQL thread initialized, starting replication in log 'mysql-bin.000007' at position 107, relay log './mariadb-relay-bin.000001' position: 4
2017-10-31 11:44:41 140027007977216 [Note] Slave I/O thread: connected to master '<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="87f5e2f7ebeee4e6e9f3c7b6b7a9b6b3b2a9b3b1a9b6b6" rel="noreferrer noopener nofollow">[email protected]</a>:3306',replication started in log 'mysql-bin.000007' at position 107
2017-10-31 11:44:42 140027007977216 [Warning] Slave I/O: Notifying master by SET @master_binlog_checksum= @@global.binlog_checksum failed with error: Unknown system variable 'binlog_checksum', Internal MariaDB error code: 1193
2017-10-31 11:44:42 140027007977216 [ERROR] Slave I/O: Replication event checksum verification failed while reading from network, Internal MariaDB error code: 1743
2017-10-31 11:44:42 140027007977216 [ERROR] Slave I/O: Relay log write failure: could not queue event from master, Internal MariaDB error code: 1595
2017-10-31 11:44:42 140027007977216 [Note] Slave I/O thread exiting, read up to log 'mysql-bin.000007', position 107
....
我也不确定这里失败的是哪种校验和(mysql引用说“复制事件校验和”?),我尝试过:
set global slave_sql_verify_checksum=0;
当前状态是:
MariaDB [(none)]> show slave status \G;
*************************** 1. row ***************************
Slave_IO_State:
Master_Host: 10.145.46.11
Master_User: replicant
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000007
Read_Master_Log_Pos: 107
Relay_Log_File: mariadb-relay-bin.000001
Relay_Log_Pos: 4
Relay_Master_Log_File: mysql-bin.000007
Slave_IO_Running: No
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: 107
Relay_Log_Space: 256
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: NULL
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 1595
Last_IO_Error: Relay log write failure: could not queue event from master
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_SSL_Crl:
Master_SSL_Crlpath:
Using_Gtid: No
Gtid_IO_Pos:
Replicate_Do_Domain_Ids:
Replicate_Ignore_Domain_Ids:
Parallel_Mode: conservative
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for the slave I/O thread to update it
最佳答案
我遇到了同样的问题,并发现了 answer 。变量slave_sql_verify_checksum
在配置文件my.cnf
中设置。设置slave_sql_verify_checksum = NONE
并重新启动服务器。
关于mysql - 玛丽亚数据库 : Relay log write failure,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47033828/