Nrpe/Icinga2 check for Eaton 3S 700 UPS connected via USB

check_eaton.sh

#!/bin/bash

#Parameters
# https://stackoverflow.com/questions/192249/how-do-i-parse-command-line-arguments-in-bash
POSITIONAL_ARGS=()

while [[ $# -gt 0 ]]; do
  case $1 in
    -m|--command)
      command="$2"
      shift # past argument
      shift # past value
      ;;
    -w|--warning)
      warning="$2"
      shift # past argument
      shift # past value
      ;;
    -c|--critical)
      critical="$2"
      shift # past argument
      shift # past value
      ;;
    -*|--*)
      echo "Unknown option $1"
      exit 1
      ;;
    *)
      POSITIONAL_ARGS+=("$1") # save positional arg
      shift # past argument
      ;;
  esac
done

set -- "${POSITIONAL_ARGS[@]}" # restore positional parameters

if [[ -z "$command" ]] ; then
    echo "Missing check command (-m/--command)"!
    exit 3
fi


case $command in
    runtime)
    value=$(/usr/bin/upsc eaton battery.runtime 2>&1 | /usr/bin/sed 's/Init SSL without certificate database//g' | xargs)
    text="Remaining runtime"
    value_text="$value s"
    ;;
    charge)
    value=$(/usr/bin/upsc eaton battery.charge 2>&1 | /usr/bin/sed 's/Init SSL without certificate database//g' | xargs)
    text="Charge"
    value_text="$value%"
    ;;
    load)
    value=$(/usr/bin/upsc eaton ups.load 2>&1 | /usr/bin/sed 's/Init SSL without certificate database//g' | xargs)
    text="Current load"
    value_text="$value"
    ;;
    status)
    value=$(/usr/bin/upsc eaton ups.status 2>&1 | /usr/bin/sed 's/Init SSL without certificate database//g' | xargs)
    text="Status"
    ;;
  *)
    echo Unknown command!
    exit 3
esac

arr=( "runtime" "charge" )
if [[ " ${arr[@]} " =~ " $command " ]]; then
    # Check for params
    if [[ -z "$warning" || -z "$critical" ]] ; then
        echo Missing parameters!
        exit 3
    fi
    if [[ $warning -lt $critical  ]] ; then
        echo Warning must be greater than critical!
        exit 3
    fi

    if [ $value -lt $critical ] ; then
        echo "$text is critical ($value_text)!|'$text'=$value;;;"
        exit 2
    fi
    if [ $value -lt $warning ] ; then
        echo "$text is warning ($value_text)!|'$text'=$value;;;"
        exit 1
    fi
    if [ $value -gt $warning ] ; then
        echo "$text is OK ($value_text)!|'$text'=$value;;;"
        exit 0
    fi
    echo "$text is unknown ($value_text)!"
    exit 3
elif [[ $command == "load" ]]; then
    # Check for params
    if [[ -z "$warning" || -z "$critical" ]] ; then
        echo Missing parameters!
        exit 3
    fi
    if [[ $warning -gt $critical  ]] ; then
        echo Warning must be less than critical!
        exit 3
    fi

    if [ $value -gt $critical ] ; then
        echo "$text is critical ($value_text)!|'$text'=$value;;;"
        exit 2
    fi
    if [ $value -gt $warning ] ; then
        echo "$text is warning ($value_text)!|'$text'=$value;;;"
        exit 1
    fi
    if [ $value -lt $warning ] ; then
        echo "$text is OK ($value_text)!|'$text'=$value;;;"
        exit 0
    fi
    echo "$text is unknown ($value_text)!"
    exit 3
elif [[ $command == "status" ]] ; then
    if [ "$value" == "OB" ] ; then
        echo "$text is warning (UPS is charging)!"
        exit 1
    fi
    if [ "$value" == "OL LB" ] ; then
        echo "$text is warning (UPS is charging)!"
        exit 1
    fi
    if [ "$value"== "OL" ] ; then
        echo "$text is OK (UPS is on-line)!"
        exit 0
    fi
    echo "$text is unknown (UPS state: $value)!"
    exit 3
fi

echo Unknown error
exit 3