[GitHub] [incubator-skywalking] hepyu opened issue #1615: There is wrong when I use cluster mode in version 3.2.6.

[GitHub]

version3.2.6.

I use elasticsearch cluster as storage, like this:

the content of collector config

cluster:
  zookeeper:
    hostPort: ip1:2181, ip2:2181, ip3:2181
    sessionTimeout: 100000

storage:
  elasticsearch:
    cluster_name: trace_online
    cluster_transport_sniffer: true
    cluster_nodes:  ip1:9300, ip2:9300, ip3:9300, ip4:9300
    index_shards_number: 2
    index_replicas_number: 0
    ttl: 7

but when I start collector, exception occur like this:
![image](https://user-images.githubusercontent.com/3917749/44900566-786cc180-ad37-11e8-86ed-204c05fb25df.png)

I am confused a lot.



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https://github.com/apache/incubator-skywalking/issues/1615 ]
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