check_hadoop_jobtrackers

I made this little script, to parse output from the adminpage, normally found at http://jobtracker.company.com:50030/jobtracker.jsp
It will check for status, and number of machines, and also give performanceoutput.
Nagios-config would look something like this;

define service{
use generic_service
service_description Jobtracker
check_command check_jobtracker
hosts jobtracker.company.com
}

define command{
command_name check_jobtracker
command_line $USER1$/check_hadoop_jobtracker.pl -H jobtracker.company.com -w 50 -c 40 -b 1 -p 50030
}

Plugin takes these options:

check_hadoop_jobtracker v. 0.3
Copyright (c) 2011 Jon Ottar Runde, jru@rundeconsult.no
See http://www.rundeconsult.no/?p=66 for updated versions and documentation
Usage: -w -c -H -p [-v version] [-h help]

Checks several Hadoop hdfs-parameters
-H (--Host)
-p (--Port)
-w (--warning) = warning limit number of machines
-c (--critical) = critical limit number of machines (w > c )
-b (--blacklist) = Number of blacklisted nodes for CRITICAL warning (default=1)
-h (--help)
-v (--version)