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From aaron morton <aa...@thelastpickle.com>
Subject Re: decommissioning a wrong node
Date Sun, 24 Apr 2011 02:35:08 GMT
> BTW all the nodes are running on the same machine and are set up using
> virtual IPs. Not sure if this is important (I don't think it shoul

Yup :)

JMX binds to 127.0.0.1, but different ports as specified in cassandra-env.sh . Include the
port number on the nodetool command line, otherwise you are just talking to the instance on
the default JMX port. 

Aaron

On 24 Apr 2011, at 11:46, Tomas Vondra wrote:

> Hi all,
> 
> I've set up a ring with three nodes to play with. I've tried to
> decommision a node, but it seems a different node is decommisioned.
> 
> Example - the nodes are running:
> 
> ~/cassandra $ nodetool -h 10.0.0.1 ring
> Address    Status State  Load     Owns    Token
>                                          729261389019385599444...
> 10.0.0.3   Up     Normal 62,28 KB 72,05%  253757231779485488680...
> 10.0.0.1   Up     Normal 53,67 KB 25,16%  681842499981089716433...
> 10.0.0.2   Up     Normal 57,92 KB 2,79%   729261389019385599444...
> 
> And then I would like to decommission node with IP 10.0.0.2, so I do this
> 
> ~/cassandra $ nodetool -h 10.0.0.2 decommission
> 
> which for some reason does this:
> 
> ~/cassandra $ nodetool -h 10.0.0.1 ring
> Address    Status State   Load      Owns    Token
>                                            7292613890193855994...
> 10.0.0.3   Up     Normal  62,28 KB  72,05%  2537572317794854886...
> 10.0.0.1   Up     Leaving 53,67 KB  25,16%  6818424999810897164...
> 10.0.0.2   Up     Normal  57,92 KB  2,79%   7292613890193855994...
> 
> and in the end
> 
> ~/cassandra $ nodetool -h 10.0.0.1 ring
> Address    Status State   Load      Owns    Token
>                                            7292613890193855994...
> 10.0.0.3   Up     Normal  62,28 KB  72,05%  2537572317794854886...
> 10.0.0.2   Up     Normal  57,92 KB  27,95%  7292613890193855994...
> 
> So a different node (with IP 10.0.0.1, not 10.0.0.2) is decommissioned.
> 
> 
> BTW all the nodes are running on the same machine and are set up using
> virtual IPs. Not sure if this is important (I don't think it should).
> 
> regards
> Tomas


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