[omd-users] how to output data from check_mk

May,Allen AMAY at vha.com
Mon Apr 20 16:44:14 CEST 2015

If you want an example, I used this to get the max RAM used in the last year from all Virtual machines, take the max spike, and find the new value to be 70% of that.  We recovered a few hundred GB of overallocated RAM this way and were able to place a few GB to machines that were a little low.  Replace "sitename" with your site.

for host in $( echo -e "GET hosts\nFilter: host_groups >= linux\nColumns: host_name host_address state host_groups\n" | /usr/bin/nc localhost 6557 | cut -d ';' -f1-4); do
        name=`echo $host | cut -d ';' -f1`
        ip=`echo $host | cut -d ';' -f2`
        state=`echo $host | cut -d ';' -f3`
        tags=`echo $host | cut -d ';' -f4`
        if [ -e /omd/sites/sitename/var/pnp4nagios/perfdata/$name/Memory_used_memused.rrd ]; then
                maxram=$(for mem in $(rrdtool fetch /omd/sites/sitename/var/pnp4nagios/perfdata/$name/Memory_used_memused.rrd MAX -s -31536000 | grep -v '\-nan' | awk '{ print $2 }'); do echo $mem; done | sort -gr | head -n1)
                installedram=$(echo -e "GET services\nFilter: host_name = $name\nFilter: description = Memory used\nColumns: perf_data\n" | /usr/bin/nc localhost 6557 | cut -d ';' -f5 | awk '{ print $1 }')
                maxram=`echo $maxram | awk '{printf "%.2f",$1}'`
                recram=$(echo $maxram/.7 | bc -l)
                ramchange=$(echo $recram-$installedram | bc -l)
                ramtotal=$(echo $ramtotal+$ramchange | bc -l)
                echo -e "$name\tRamChange: $ramchange\tRunning total: $ramtotal"

-----Original Message-----
From: omd-users-bounces at lists.mathias-kettner.de [mailto:omd-users-bounces at lists.mathias-kettner.de] On Behalf Of Smith, Cathy
Sent: Sunday, April 19, 2015 3:47 PM
To: omd-users at lists.mathias-kettner.de
Subject: [omd-users] how to output data from check_mk

Is there a way to output the performance data from OMD check_mk via a script?  I've been asked to look into integrating the data captured by check_mk into another reporting system.

Thank you for your assistance.


Cathy L. Smith
IT Engineer, CISSP

Pacific Northwest National Laboratory
Operated by Battelle for the
U.S. Department of Energy

Phone:      509.375.2687
Fax:        509.375.2330
Email:      cathy.smith at pnnl.gov

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