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https://issues.apache.org/jira/browse/CASSANDRA-9748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15041884#comment-15041884
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Paulo Motta commented on CASSANDRA-9748:
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bq. One nice to have that occurred to me would be to log the interfaces we end
up binding on.
we could do that, but why exactly? since the {{listen_address}} and
{{broadcast_address}} are explicitly defined, the admin should know which
interfaces are they bound to. We would probably need to do additional work to
fetch this, so I'd prefer to keep it as is, unless there's a good reason for it.
> 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: Improvement
> Components: Streaming and Messaging
> Environment: Cassandra 2.0.16; multi-DC configuration
> Reporter: Roman Bielik
> Assignee: Paulo Motta
> Priority: Minor
> Labels: docs-impacting
> Fix For: 2.1.x, 2.2.x, 3.0.x
>
> Attachments: system_node1.log, system_node2.log
>
>
> 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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