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From "Paulo Motta (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-9748) Can't see other nodes when using multiple network interfaces
Date Tue, 04 Aug 2015 12:08:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-9748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14653519#comment-14653519
] 

Paulo Motta commented on CASSANDRA-9748:
----------------------------------------

You must use the same list of seeds for all nodes, otherwise the nodes will not be able to
see each other during cluster bootstrap. Find more information about seed nodes here: http://docs.datastax.com/en/cassandra/2.0/cassandra/architecture/architectureGossipAbout_c.html

> Can't see other nodes when using multiple network interfaces
> ------------------------------------------------------------
>
>                 Key: CASSANDRA-9748
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-9748
>             Project: Cassandra
>          Issue Type: Bug
>         Environment: Cassandra 2.0.16; multi-DC configuration
>            Reporter: Roman Bielik
>
> The idea is to setup a multi-DC environment across 2 different networks based on the
following configuration recommendations:
> http://docs.datastax.com/en/cassandra/2.0/cassandra/configuration/configMultiNetworks.html
> Each node has 2 network interfaces. One used as a private network (DC1: 10.0.1.x and
DC2: 10.0.2.x). The second one a "public" network where all nodes can see each other (this
one has a higher latency). 
> Using the following settings in cassandra.yaml:
> *seeds:* public IP (same as used in broadcast_address)
> *listen_address:* private IP
> *broadcast_address:* public IP
> *rpc_address:* 0.0.0.0
> *endpoint_snitch:* GossipingPropertyFileSnitch
> _(tried different combinations with no luck)_
> No firewall and no SSL/encryption used.
> The problem is that nodes do not see each other (a gossip problem I guess). The nodetool
ring/status shows only the local node but not the other ones (even from the same DC).
> When I set listen_address to public IP, then everything works fine, but that is not the
required configuration.
> _Note: Not using EC2 cloud!_
> netstat -anp | grep -E "(7199|9160|9042|7000)"
> tcp        0      0 0.0.0.0:7199                0.0.0.0:*                   LISTEN  
   3587/java           
> tcp        0      0 10.0.1.1:9160               0.0.0.0:*                   LISTEN  
   3587/java           
> tcp        0      0 10.0.1.1:9042               0.0.0.0:*                   LISTEN  
   3587/java           
> tcp        0      0 10.0.1.1:7000               0.0.0.0:*                   LISTEN  
   3587/java           
> tcp        0      0 127.0.0.1:7199              127.0.0.1:52874             ESTABLISHED
3587/java           
> tcp        0      0 10.0.1.1:7199               10.0.1.1:39650              ESTABLISHED
3587/java 



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