Standard edition

IBM Operations Analytics - Log Analysis, Version 1.3.1

Managing the Hadoop service on datanodes

After you configure the Hadoop service, you can use the server.sh script to manage the service.

Procedure

You can choose to manage the service on an individual datanode or manage all of the service instances together.

To manage the service on an individual datanode, use the LA user that you created when you configured the service to log in to a Hadoop datanode server.
1. Run the <LA_SERVICE_HOME>/bin/server.sh script with one of the following parameters:
  Start
  
  Starts the service on the Hadoop datanode server.
  
  Stop
  
  Stops the service on the Hadoop datanode server.
  
  Status
  
  Retrieves the status for the Hadoop datanode server.
To manage all of the instances, select one datanode to act as a LA_Service_Controller_Node. This will manage the service on all of the datanodes.
1. (Optional) Create password-less SSH for the LA user from this datanode to all of the datanodes, including this datanode, in the Hadoop cluster.
2. Use the LA user to login to the LA_Service_Controller_Node datanode.
3. Run the <LA_SERVICE_HOME>/bin/server.sh script with one of the following parameters:
  clusterStart
  
  Starts the service on each Hadoop datanode server.
  
  clusterStop
  
  Stops the service on each Hadoop datanode server.
  
  clusterStatus
  
  Retrieves the status for each Hadoop datanode server.
If you do not configure password-less SSH connections during the configuration, you are prompted for the password for each datanode server.