Server nodes goes into DOWN state

Hi All,

 I am trying to Run couchbase-server Community 4.0 (Current Release) on Centos , I am able to launch the nodes, initialize and cluster them but once i start creating Buckets with COUCH BASE type all the three nodes in the Cluster are going into pending state. There is no problem when i am creating a MEMCACHED bucket . Anyone familiar with this issue.

Thanks
Raghu Challa

Hello we figured the issue is firewall for inter-node data transfer and opened up port range 9998-9999 and it worked for us . Thank you