Connect via ssh , run iostat command , and parse

solarisIOStatCheck.sh

#!/bin/bash
#
# Script Parameters.
# ==============
# @param $1 device
# @param $2 limit
# @param $3 column
#
# do man iostat for more data
# columns
# 1   |  2  |  3   |  4   |  5   |  6   |   7    |   8    | 9  | 10 |  11
# r/s | w/s | kr/s | kw/s | wait | actv | wsvc_t | asvc_t | %w | %b | device#
#
# (1, 2, 3) = (r/w , w/s , kw/s)
# 8 = asvc_t
# 10 = %b
# 11 = device
#

device=$1
limit=$2
column=$3
user='theeye'
host='thehost'

echo "checking if $device value in column $column is lower than $limit"

test $device || { echo "no device on \$1"; exit 1; }
test $limit || { echo "no limit on \$2"; exit 2; }
test $column || { echo "no column on \$3"; exit 3; }

echo "getting data from bdcrmqa02"

#
# Command to obtain the data
#iostat -Xcnr 3 2 | tac | sed '/extended device/q' | tac | sed '1,2d' | while read line; do echo "$line"; done
#
data=$(ssh $user@$host 'iostat -Xcnr 3 2 | tac | sed "/extended device/q" | tac | sed "1,2d" | while read line; do echo "$line"; done')

#echo "$data"

alert="no"

while read line; do
  echo $line | grep $device
  if [[ $? == 0 ]]; then
    val=$(echo $line | cut -d',' -f$column)
    result=$(echo $val'>'$limit | bc -l)
    
    if [[ $result == 1 ]]; then
      alert="yes"
    fi
  fi
done <<< "$(echo -e "$data")"

if [ $alert == 'yes' ]
then
  echo "{\"state\":\"failure\",\"data\":{\"value\":$val}}"
else
  echo "{\"state\":\"success\",\"data\":{\"value\":$val}}"
fi