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From Tyler Hobbs <ty...@datastax.com>
Subject Re: nodes moving spontaneously
Date Fri, 01 Jun 2012 21:17:33 GMT
OpsCenter just periodically calls describe_ring() on different nodes in the
cluster, so that's how it's getting that information.

Maybe try running nodetool ring on each node in your cluster to make sure
they all have the same view of the ring?

On Fri, Jun 1, 2012 at 4:01 PM, Curt Allred <curt@mediosystems.com> wrote:

> We have a 10 node cluster (v0.7.9) split into 2 datacenters.  Three times
> we have seen nodes move themselves to different locations in the ring.  In
> each case, the move unbalanced the ring. In one case a node moved to the
> opposite side of the ring.****
>
> ** **
>
> Sometime after the first spontaneous move we started using Datastax
> OpsCenter.  The next 2 moves showed up in its event log like:****
>
> 5/20/2012 11:23am - Info -  Host 12.34.56.78 moved from '12345' to '54321'
> ****
>
> ** **
>
> where '12345' and '54321' are the old and new tokens.****
>
> ** **
>
> Anyone know whats causing this?****
>
> ** **
>



-- 
Tyler Hobbs
DataStax <http://datastax.com/>

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