title: Scripts for Nagios to monitor a hadoop cluster
body: <p>I am trying to monitor a Hadoop cluster with Nagios. My goal is to monitor the status and resource usage of all the Hadoop daemons such as DataNode, Jobtracker and Tasktracker etc. What I can think of the solution is to monitor the ports that these daemons are using. But this seems very limited. For example, I can't see how many tasks are running in the node etc. </p>
  
  <p>So, my question is: is there systematic solution for Hadoop monitoring using Nagios? </p>
  
  <p>Thanks, </p>
  
  <p>Shumin</p>