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I've got a two-node Amazon Web Services cassandra cluster created using "DataStax Auto-Clustering AMI 2.5.1-pv". OpsCenter is running on node 0, as is the datastax-agent, but they don't seem to be completely connected. OpsCenter says 0 of 0 agents connected and the connection icon next to "New Cluster" is blinking red.

OpsCenter screenshot: https://i.stack.imgur.com/Z6Tnx.png

Brian-K-Smith
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  • It's just a case-sensitive keyspace, it would be useful to see a snippet of the Hector code for the query (specifically the part where you mention the keyspace). – Lyuben Todorov Aug 07 '14 at 00:06
  • That's from the datastax-agent, so I don't have code for that. But knowing that the quotes just mean a case sensitive keyspace is useful. – Brian-K-Smith Aug 07 '14 at 06:35
  • Edited significantly because Lyuben's comment made clear that my first idea for what was going wrong was way off base. – Brian-K-Smith Aug 07 '14 at 06:52
  • I think you haven't configured opscenter to see the cluster at all, I dont see any cassandra nodes or anything in than SS. Here's [a screenshot with a single node](http://prikachi.com/images/781/7524781T.png) in opscenter. In the top right corner under **Cluster Actions** you can select **Add nodes**. – Lyuben Todorov Aug 08 '14 at 11:32
  • The fact that it displays "0 of 0" indicates that opscenterd can't connect to the IPs/hostnames provided in the cluster configuration. Verify that the cluster is up, and edit the connection settings in OpsCenter via Settings->Cluster Connections. You can also check opscenterd.log for any more information about why it can't connect – mbulman Aug 11 '14 at 14:58

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a nodetool status would really help.

check the agent logs on either of the nodes when the starts, if you don't see any errors, try "adding a new cluster" then "manage existing cluster" and add the seed IPs of your two nodes, opscenter will try to update the agents if needed.

BTW: upgrade to opscenter 5.1, there are a lot of bug already fixed

sebamontini
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