redis-trib.rb reshard针对有键值的slot迁移失败 Wrong number of arguments for specified sub command-蒲公英云

redis-trib.rb reshard针对有键值的slot迁移失败 Wrong number of arguments for specified sub command

运行环境：

redis ：4.0

redis-trib.rb redis集群管理脚本

ruby: 2.6.3

在执行reshard命令时发现迁移有键值的slot时就会报错Wrong number of arguments for specified sub command，谷歌找到的答案是redis-trib.rb脚本的兼容性问题，需要修改这个脚本migrate部分代码：

    \# Migrate all the keys from source to target using the MIGRATE command  
    while true  
        keys = source.r.cluster("getkeysinslot",slot,o\[:pipeline\])  
        break if keys.length == 0  
        begin  
            source.r.**client.**call(\["migrate",target.info\[:host\],target.info\[:port\],"",0,@timeout,:keys,\*keys\])  
        rescue => e  
            if o\[:fix\] && e.to\_s =~ /BUSYKEY/  
                xputs "\*\*\* Target key exists. Replacing it for FIX."  
                source.r.**client.**call(\["migrate",target.info\[:host\],target.info\[:port\],"",0,@timeout,:replace,:keys,\*keys\])

将标红部分删除即可，即变成下面：

    \# Migrate all the keys from source to target using the MIGRATE command  
    while true  
        keys = source.r.cluster("getkeysinslot",slot,o\[:pipeline\])  
        break if keys.length == 0  
        begin  
            source.r.call(\["migrate",target.info\[:host\],target.info\[:port\],"",0,@timeout,:keys,\*keys\])  
        rescue => e  
            if o\[:fix\] && e.to\_s =~ /BUSYKEY/  
                xputs "\*\*\* Target key exists. Replacing it for FIX."  
                source.r.call(\["migrate",target.info\[:host\],target.info\[:port\],"",0,@timeout,:replace,:keys,\*keys\])