title: cassandra opscenter phantom node
body: <p>I have had a 6 node Cassandra (v 2.03) running for a few weeks. I tried to add a new node yesterday, but had a streaming error. </p>
  
  <p>I found the cause of this and thought I would decommission the new node, fix the problem, the go back to adding the new node. </p>
  
  <p>I removed the new node, and when I run nodetool status, only 6 nodes show, the cluster was up and still running with no issues. </p>
  
  <p>However, in opscenter, it shows 7 nodes, even though this machine is now terminated, it still thinks it is part of the cluster. </p>
  
  <p>I have now uninstalled the opscenter agent on all machines, removed opscenter, all logs, and dropped the opscenter keyspace. When I reinstalled opscenter, the 7th node was still there.</p>
  
  <p>As mentioned, this machine does not exist anymore, and it is not shown in nodetool status, so i cannot issue any commands related to this machine.</p>
  
  <p>Could someone please tell me, where is opscenter receiving this information from? </p>
  
  <p>I deleted everything to do with opscenter, and nodetool thinks everything is ok, so something somewhere is holding on to info about this dead node, but I do not know where it is and how to remove it. thanks</p>
  
  <p>nodetool status output :</p>
  
  <p><a href="http://pastebin.com/HFAkVmLY" rel="nofollow">http://pastebin.com/HFAkVmLY</a></p>
  
  <p>you can see it shows 6 nodes, but opscenter has 7</p>