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From "Edward Capriolo (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4594) Monitoring Scripts for Nagios
Date Sat, 08 Nov 2008 05:00:46 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4594?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645954#action_12645954

Edward Capriolo commented on HADOOP-4594:

I removed the extra text, sorry about that.

As far as I can tell, nothing in the scripts/plugins are hard coded. the SAMPLE file is just
example usage. Not part that would be installed on the nagios server.

For example:

command_line			$USER1$/check_http -H $HOSTADDRESS$ -u http://$HOSTADDRESS$:$ARG1$/jobtracker.jsp
-p $ARG1$ -r RUNNING

This check follows the standard nagios conventions in that it allows the user to specify host
and port. -r RUNNING is a specific regular expression being searched for on the page. Since
the status pages are in more of a human then machine readable format extracting information
from them is difficult, Complex parsing of dfshealth.jsp is also subject to change.

Trying to make nagios check scripts more complete is difficult as nagios deals with only simple
Critical, Warning, OK, UNKNOWN, and a plugin only can output one status line. 

Let me know what you think would make the scripts better.

> Monitoring Scripts for Nagios
> -----------------------------
>                 Key: HADOOP-4594
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4594
>             Project: Hadoop Core
>          Issue Type: Wish
>            Reporter: Edward Capriolo
>            Priority: Minor
>         Attachments: HADOOP-4594.patch
> I would like to create a set of local via NRPE and remote check scripts that can be shipped
with the hadoop distribution and used to monitor Hadoop. I already have completed the NRPE
scripts. The second set of scripts would use wget to read the output of the hadoop web interfaces.
Do these already exist?
> I guess these would fall under a new contrib project.

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