建立redis cluster時，有警告提示

建立redis集群的時候會出現警告提示，如下：

[root@itheima redis-cluster]# ./redis-trib.rb create --replicas 1 192.168.5.128:7001 192.168.5.128:7002 192.168.5.128:7003 192.168.5.128:7004 192.168.5.128:7005 192.168.5.128:7006

>>>creating cluster
connecting to node 192.168.5.128:7001: ok
/usr/local/share/gems/gems/redis-3.0.0/lib/redis.rb:182: warning: wrong element type nil at 98(expected array)

/usr/local/share/gems/gems/redis-3.0.0/lib/redis.rb:182: warning: ignoring wrong elements is deprecated, remove them explicitly
/usr/local/share/gems/gems/redis-3.0.0/lib/redis.rb:182: warning: this
causes argumenterror in the next release

......
......connecting to node 192.168.5.128:7002: ok
/usr/local/share/gems/gems/redis-3.0.0/lib/redis.rb:182: warning: wrong element type nil at 98(expected array)

/usr/local/share/gems/gems/redis-3.0.0/lib/redis.rb:182: warning: ignoring wrong elements is deprecated, remove them explicitly
/usr/local/share/gems/gems/redis-3.0.0/lib/redis.rb:182: warning: this
causes argumenterror in the next release......

......connecting to node 192.168.5.128:7003: ok
connecting to node 192.168.5.128:7004: ok
connecting to node 192.168.5.128:7005: ok
connecting to node 192.168.5.128:7006: ok
>>> performing hash slots allocation on 6nodes...
using 3masters:
192.168.5.128:7001
192.168.5.128:7002
192.168.5.128:7003adding replica 192.168.5.128:7004 to 192.168.5.128:7001adding replica 192.168.5.128:7005 to 192.168.5.128:7002adding replica 192.168.5.128:7006 to 192.168.5.128:7003m: 3cbed89c47ca14b3d1eb11dd2f7525fa6cb4fcd7 192.168.5.128:7001slots:0-5460 (5461slots) master
m: 27d069e1b4d459a92b6cc9a1c92ad46ea00cb61d 192.168.5.128:7002slots:5461-10922 (5462slots) master
m: d7d28caadfdc4161261305f2d2baf55d2d8f4221 192.168.5.128:7003slots:10923-16383 (5461slots) master
s: f124b72c0421c7514f44668d30761d075e42643d 192.168.5.128:7004replicates 3cbed89c47ca14b3d1eb11dd2f7525fa6cb4fcd7
s: 8cf60c085a58b60557a887a5e8451ce38e6b54fa 192.168.5.128:7005replicates 27d069e1b4d459a92b6cc9a1c92ad46ea00cb61d
s: 05ad0eb9b5f839771b09dc18192909d5fa1f893e 192.168.5.128:7006replicates d7d28caadfdc4161261305f2d2baf55d2d8f4221
can i set the above configuration? (type 'yes'to accept): yes
>>>nodes configuration updated
>>>assign a different config epoch to each node
>>>sending cluster meet messages to join the cluster
waiting 
forthe cluster to join......
>>> performing cluster check (using node 192.168.5.128:7001)
m: 3cbed89c47ca14b3d1eb11dd2f7525fa6cb4fcd7 192.168.5.128:7001slots:0-5460 (5461slots) master
m: 27d069e1b4d459a92b6cc9a1c92ad46ea00cb61d 192.168.5.128:7002slots:5461-10922 (5462slots) master
m: d7d28caadfdc4161261305f2d2baf55d2d8f4221 192.168.5.128:7003slots:10923-16383 (5461slots) master
m: f124b72c0421c7514f44668d30761d075e42643d 192.168.5.128:7004slots: (0slots) master
replicates 3cbed89c47ca14b3d1eb11dd2f7525fa6cb4fcd7
m: 8cf60c085a58b60557a887a5e8451ce38e6b54fa 192.168.5.128:7005slots: (0slots) master
replicates 27d069e1b4d459a92b6cc9a1c92ad46ea00cb61d
m: 05ad0eb9b5f839771b09dc18192909d5fa1f893e 192.168.5.128:7006slots: (0slots) master
replicates d7d28caadfdc4161261305f2d2baf55d2d8f4221
[ok] all nodes agree about slots configuration.
>>> check for
open slots...
>>>check slots coverage...
[ok] all 16384slots covered.
[root@itheima redis-cluster]#

是警告不是錯誤，不影響建立redis集群。但是看著還是很不舒服。

警告翻譯如下：

warning: wrong element type nil at 98(expected array)

warning: ignoring wrong elements is deprecated, remove them explicitly
warning: 
this
causes argumenterror in the next release
警告：98處的錯誤元素型別為nil（預期陣列）

解決方法：

2)、同時將新node的集群配置檔案刪除，即：刪除你redis.conf裡面cluster-config-file所在的檔案；如果是預設的話，那就是刪除nodes.conf 檔案。

3)、再次新增新節點如果還是報錯，則登入新node後,./redis-cli –h 192.168.5.128 –p 7007對資料庫進行清除：

192.168.5.128:7007> flushall　　#清空所有庫的key

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