#!/bin/bash
# Author Stefan Nonchev
# Nagios check script for esx to check existence of orphaned snapshots
# The script should work with any ESXi 5.x
# Installation notes:
# On your nagios server execute:
#
# #sudo nagios
# #ssh-keygen
# copy the public certificate into /etc/ssh/keys-root/authorized_keys on each ESXi host that will be monitored

print_usage() {
        echo ""
        echo "Usage: $0 [esxi_hostname] [username] [password]"
        echo ""
        exit 3
}

if [ "$#" -ne "3" ]; then
        print_usage
fi

IFS="
"

#vmnames=""
# Getting full path to .vmx files from vmInventory.xml
vmx=(`vmware-cmd -H $1 -U $2 -P $3 -l | sed 's: :\\ :g' | sed "s:':':g"`);
for vm in "${vmx[@]}"; do
    hassnapshot=(`vmware-cmd -H $1 -U $2 -P $3 $vm hassnapshot | awk '{print $4}'`)
    #add quotes to the vm string for proper argument pass
    vm=(`echo $vm | sed 's/.*/"&"/'`);

    if [ $hassnapshot -eq 1 ] ; then
        vmdk=(`ssh root@$1 grep vmdk $vm | head -1 | cut -d \" -f 2`);
        echo $vmdk
        if [[ $vmdk == *0000* ]] ; then
            vmname=(`ssh root@$1 grep displayName $vm | cut -d \" -f 2`)
            vmnames=$vmnames$vmname","
        fi
    fi

done

#IFS=""
if [ ${#vmnames} -gt 0 ] ; then
    vmnames="${vmnames%?}"
    echo "CRITICAL - $vmnames running on orphaned snapshots"
    exit 2
fi


echo "OK"
exit 0