Redis3重建Cluster

1、关闭cluster全部节点
2、删除所有nodes.conf文件
3、开启全部节点
4、依次flushall
5、重建集群即可

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例子：

redis集群启动失败案例

部署Redis分布式集群时，出现了如下错误:

moguang@ubsvr13:/opt/redis-unstable/src$ ./redis-trib.rb create 192.168.1.13:6379 192.168.1.15:6380 192.168.1.40:6381
>>> Creating cluster
Connecting to node 192.168.1.13:6379: OK
Connecting to node 192.168.1.15:6380: OK
Connecting to node 192.168.1.40:6381: OK
>>> Performing hash slots allocation on 3 nodes...
Using 3 masters:
192.168.1.40:6381
192.168.1.15:6380
192.168.1.13:6379
M: 225b7f54c67483f71955db78312a90c67941fff0 192.168.1.13:6379
   slots:10922-16383 (5462 slots) master
M: bca62c53e7f50d7c83dd418ed23e08fb8a4e9bb5 192.168.1.15:6380
   slots:5461-10921 (5461 slots) master
M: 47483c65a705025aab28ee74da210a2dce41bc41 192.168.1.40:6381
   slots:0-5460 (5461 slots) master
Can I set the above configuration? (type 'yes' to accept): yes
/usr/lib/ruby/gems/1.8/gems/redis-3.0.7/lib/redis/client.rb:97:in `call': ERR Slot 16011 is already busy (Redis::CommandError)
from /usr/lib/ruby/gems/1.8/gems/redis-3.0.7/lib/redis.rb:2432:in `method_missing'
from /usr/lib/ruby/gems/1.8/gems/redis-3.0.7/lib/redis.rb:37:in `synchronize'
from /usr/lib/ruby/1.8/monitor.rb:242:in `mon_synchronize'
from /usr/lib/ruby/gems/1.8/gems/redis-3.0.7/lib/redis.rb:37:in `synchronize'
from /usr/lib/ruby/gems/1.8/gems/redis-3.0.7/lib/redis.rb:2431:in `method_missing'
from ./redis-trib.rb:203:in `flush_node_config'
from ./redis-trib.rb:571:in `flush_nodes_config'
from ./redis-trib.rb:570:in `each'
from ./redis-trib.rb:570:in `flush_nodes_config'
from ./redis-trib.rb:820:in `create_cluster_cmd'
from ./redis-trib.rb:1026:in `send'
from ./redis-trib.rb:1026
经检查，这是由于上一次配置集群失败时留下的配置信息导致的。 只要把redis.conf中定义的 cluster-config-file 所在的文件删除，重新启动redis-server及运行redis-trib即可。