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1. MySQL server的binlog清理 1.1 使用MySQL参数控制 expire_logs_days 设置二进制日志的过期天数，过了指定天数的日志将被自动删除，可动态修改如果设置了非0值，则在mysqld启动和日志刷新时，可能执行清理超过定义天数的binlog file 全局变量，动...

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