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I've installed DataStax OpsCenter (Apache Cassandra) and in OpsCenter, there is an error: "0 of 1 agents connected". When I click "fix", enter credentials and try to install nodes, i get error:

Unable to SSH to some of the hosts

Unable to SSH to 127.0.0.1: global name 'get_output' is not defined

Does anyone have any ideas how to fix it?

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mnowak
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  • From the DataStax support forum: [0 of 1 agents connected : Unable to connect to Node](http://www.datastax.com/support-forums/topic/0-of-1-agents-connected-unable-to-connect-to-node). This probably belongs on another Stack Exchange site. – jww Aug 12 '14 at 19:22
  • This question appears to be off-topic because it is not about programming. See [What topics can I ask about here](http://stackoverflow.com/help/on-topic) in the Help Center. Perhaps [Super User](http://superuser.com/) or [Database Administrators Stack Exchange](http://dba.stackexchange.com/) would be a better place to ask. – jww Aug 12 '14 at 19:24
  • Are you running opscenter on Windows? – arre Aug 14 '14 at 20:49
  • Yes, Windows 7 64 bit – mnowak Aug 15 '14 at 10:15

1 Answers1

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I fixed the problem with instruction from stackoverflow

The reason is OpsCenter could not find correct cassandra config file (cassandra.yaml).

In my case I installed cassandra to "D:\DataStax" instead of default location "C:\Program Files\DataStax Community". Add conf_location to opscenter\conf\clusters\local.conf solved my problem.

This is my final setting:

conf_location = [DataStax Install Dir]\apache-cassandra\conf\cassandra.yaml
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user2630295
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  • That was probably the issue - when I reinstalled OpsCenter into default directory, everything worked fine :) Thanks – mnowak Aug 28 '14 at 09:12