[jira] [Commented] (CASSANDRA-6523) "Unable to contact any seeds!" with multi-DC cluster and listen != broadcast address

["Chris Burroughs (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CASSANDRA-6523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14005965#comment-14005965 ] 

Chris Burroughs commented on CASSANDRA-6523:
--------------------------------------------

Still present in 2.0.x series.  There are a variety of stack overflow and mailing list threads threads with "Unable to contact any seeds".

I think the problem is that CASSANDRA-5768 isn't checking "have I contacted a seed" but "am I connected to one of these IP addresses".  That ends up being  requirement that the seeds/broadcast/listen address line up in a particular way.

> "Unable to contact any seeds!" with multi-DC cluster and listen != broadcast address
> ------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-6523
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6523
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>         Environment: 1.2.13ish
>            Reporter: Chris Burroughs
>
> New cluster:
>  * Seeds: list of 6 internal IPs
>  * listen address: internal ip
>  * broadcast: external ip
> Two DC cluster, using GPFS where the external IPs are NATed.  Clusters fails to start with "Unable to contact any seeds!"
>  * Fail: Try to start a seed node
>  * Fail: Try to start two seed nodes at the same time in the same DC
>  * Success: Start two seed nodes at the same time in different DCs.
> Presumably related to CASSANDRA-5768



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