The easiest approach I can think of is to write a simple Nagios plugin that checks if the datanode JVM process is alive. Or you may write a Nagios-plugin that checks for error or warning messages in datanode logs. (I am sure you can find quite a few log-checking Nagios plugin in nagiosplugin.org)
If you are unsure of how to write nagios-plugin, I suggest you to read stuff from link "Leverage Nagios with plug-ins you write" http://www.ibm.com/developerworks/aix/library/au-nagios/ as it's got good explanations and examples on how to write nagios plugin. Or if you've got time to burn, you might want to read Nagios documentation, too. Let me know if you need help on this matter. /Taeho On Tue, Oct 7, 2008 at 2:05 AM, Gerardo Velez <[EMAIL PROTECTED]>wrote: > Hi Everyone! > > > I would like to implement Nagios health monitoring of a Hadoop grid. > > Some of you have some experience here, do you hace any approach or advice I > could use. > > At this time I've been only playing with jsp's files that hadoop has > integrated into it. so I;m not sure if it could be a good idea that > nagios monitor request info to these jsp? > > > Thanks in advance! > > > -- Gerardo >
