title: Cannot connect to datastax agent
body: <p>I am unable to connect to any nodes through opscenter. In opscenter it says that agents need to be connected inorder for opscenter to work. I checked in datastax-agent/agent.log file and found below errors. </p>
  
  <pre><code>ERROR [clojure-agent-send-off-pool-0] 2016-01-27 09:30:54,545 Can't connect to Cassandra (All host(s) tried for query failed (tried: /127.0.0.1:9042 (com.datastax.driver.core.TransportException: [/127.0.0.1:9042] Cannot connect))), retrying soon.
  </code></pre>
  
  <p>I checked port 9042 and 7199 both are listening.. </p>
  
  <pre><code>x.x.x.10:9042   :::*                        LISTEN      497        499005     28550/java
  </code></pre>
  
  <p>pls advise.. what needs to be checked for this. Thanks</p>