How many slots do you want to move (from 1 to 16384)?,取值范围为1~16384,其中16384为redis cluster的拥有的slots总数,好比想只移动100个,输入100便可。若是迁移的slots数量多,应当设置redis-trib.rb的超时参数--timeout值大一点。不然,迁移过程当中易遇到超时错误“[ERR] Calling MIGRATE: IOERR error or timeout reading to target instance”,致使只完成部分,可能会形成数据丢失。redis