ERROR 3021 (HY000): This operation cannot be performed with a running slave io thread； run STOP SLAV
mysql创建从节点出现如下报错ERROR 3021 (HY000): This operation cannot be performed with a running slave io thread; run STOP SLAVE IO_THREAD FOR CHANNEL '' first.原因：因为之前已经创建过主节点，需停掉之前的配置 再重新配置执行如下命令stop slave;rese
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mysql创建从节点出现如下报错
ERROR 3021 (HY000): This operation cannot be performed with a running slave io thread; run STOP SLAVE IO_THREAD FOR CHANNEL '' first.原因：
因为之前已经创建过主节点，需停掉之前的配置 再重新配置
执行如下命令
stop slave;
reset master;
再次配置主从即可，查看从节点状态
show slave status\G
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