可以看到集群已经出现问题了。
追记：
在搭建多机多点集群的时候，遇到以下问题：
1、一直在等待...
>>> Nodes configuration updated
>>> Assign a different config epoch to each node
>>> Sending CLUSTER MEET messages to join the cluster
Waiting for the cluster to join.......................
解决办法：确认端口是否开放。如果没有开发，可以修改/etc/sysconfig/iptables文件，开放端口（复制一行前面开放端口的来修改），然后service iptables restart重启防火墙。
极端的可以service iptables stop来关闭防火墙
2、槽被利用
/usr/local/rvm/gems/ruby-2.3.3/gems/redis-4.0.0/lib/redis/client.rb:119:in `call': ERR Slot 5461 is already busy (Redis::CommandError) from /usr/local/rvm/gems/ruby-2.3.3/gems/redis-4.0.0/lib/redis.rb:2742:in `block in method_missing' from /usr/local/rvm/gems/ruby-2.3.3/gems/redis-4.0.0/lib/redis.rb:45:in `block in synchronize' from /usr/local/rvm/rubies/ruby-2.3.3/lib/ruby/2.3.0/monitor.rb:214:in `mon_synchronize' from /usr/local/rvm/gems/ruby-2.3.3/gems/redis-4.0.0/lib/redis.rb:45:in `synchronize' from /usr/local/rvm/gems/ruby-2.3.3/gems/redis-4.0.0/lib/redis.rb:2741:in `method_missing' from /usr/local/bin/redis-trib.rb:212:in `flush_node_config' from /usr/local/bin/redis-trib.rb:776:in `block in flush_nodes_config' from /usr/local/bin/redis-trib.rb:775:in `each' from /usr/local/bin/redis-trib.rb:775:in `flush_nodes_config' from /usr/local/bin/redis-trib.rb:1296:in `create_cluster_cmd' from /usr/local/bin/redis-trib.rb:1700:in `<main>'
解决办法：删除掉在redis.conf的dir目录下的几个文件redis.conf文件除外。
如果还是有相同的问题，可以考虑对所有节点执行下面两个命令。
redis-cli -p 端口号-h 主机物理地址 FLUSHALL
redis-cli -p 端口号-h 主机物理地址 CLUSTER RESET SOFT
