Data Collectors Not Connecting to the Data Aggregator

Document ID : KB000039047
Last Modified Date : 14/02/2018
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Introduction:  

When the Data Collectors are not connected or display a status of Unknown, this could be a result of a bad upgrade of the DC or it could be other components of Performance Management not working. Here are some troubleshooting steps that could help reconnect your Data Collectors.

 

Instructions:

  • Confirm Status of Data Collector/s

    /etc/init.d/dcmd status

  • Stop and Restart your Data Collector/s

    /etc/init.d/dcmd stop
    /etc/init.d/dcmd status  (to confirm it has stopped)
    /etc/init.d/dcmd start

  • Stop DC, move data and Restart your Data Collector/s:

    /etc/init.d/dcmd stop
    ps -ef | grep java
    kill -9 <PID> (if Needed)
    cd /opt/IMDataCollector/apache-karaf-2.3.0/
    mv data data.old
    /etc/init.d/dcmd start

  • Stop/Restart your Data Collector/s and Aggregator:
  1. Stop DC:   /etc/init.d/dcmd stop
  2. Stop DA:   /etc/init.d/dadaemon stop
  3. Stop ActiveMQ from DA:   /etc/init.d/activemq stop
  4. Start DA:   /etc/init.d/dadaemon start
  5. Start DC:   /etc/init.d/dcmd start
  6. In Performance Center UI go to Admin/Data Sources and Re-sync the DA (note: re-syncing can take up to 5 min)