Custom sensor to monitor the CPU process

Hello,

I have created a custom sensor to monitor the CPU process. It is running fine on CentOS 6.x however on CentOS Linux release 7.4.1708 (Core) we are seeing errors like: 0 % (Idle Percent) is below the error limit of 5 % in Idle Percent

If I go and refresh it manually it is working. The code is given below:

+++++++++++++++++++++++++++++++++++++++++++++++++++++++
#!/bin/bash
cpuinfo="/usr/bin/top"

xmlresult=`cat <<EOF
<?xml version="1.0" encoding='UTF-8'?>
<prtg>
EOF
`
if [ -f $cpuinfo ]; then
  result=`/usr/bin/top -b -n 1 | grep 'Cpu(s)'`
if [[ $result == %Cpu* ]]; then
 user=`echo $result | awk '{print $2}'| awk '{print int($0)}'`
 system=`echo $result | awk '{print $4}'| awk '{print int($0)}'`
 nice=`echo $result | awk '{print $6}'| awk '{print int($0)}'`
 idle=`echo $result | awk '{print $8}'| awk '{print int($0)}'`
 wait=`echo $result | awk '{print $10}'| awk '{print int($0)}'`
fi
  xmlresult=$xmlresult`cat <<EOF
  <result>
    <channel>User Percent</channel>
    <float>1</float>
    <unit>Percent</unit>
    <value>$user</value>
  </result>
EOF
`
  xmlresult=$xmlresult`cat <<EOF

  <result>
    <channel>System Percent</channel>
    <float>1</float>
    <unit>Percent</unit>
    <value>$system</value>
  </result>
EOF
`
  xmlresult=$xmlresult`cat <<EOF
  <result>
    <channel>Nice Percent</channel>
    <float>1</float>
    <unit>Percent</unit>
    <value>$nice</value>
  </result>
EOF
`
  xmlresult=$xmlresult`cat <<EOF
  <result>
    <channel>Idle Percent</channel>
    <float>1</float>
    <unit>Percent</unit>
    <value>$idle</value>
    <LimitMinWarning>10</LimitMinWarning>
    <LimitMinError>5</LimitMinError>
    <LimitMode>1</LimitMode>
  </result>
EOF
`
  xmlresult=$xmlresult`cat <<EOF
  <result>
    <channel>Wait Percent</channel>
    <float>1</float>
    <unit>Percent</unit>
    <value>$wait</value>
  </result>
EOF
`
  xmlresult=$xmlresult`cat <<EOF

  <text>OK</text>
</prtg>
EOF
`
else
  xmlresult=$xmlresult`cat <<EOF
  <error>1</error>
  <text>This sensor is not supported by your system, missing $cpuinfo</text>
</prtg>
EOF
`
fi
echo "$xmlresult"
exit 0
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Please let me know what is wrong??

[root@test~]# /usr/bin/top -b -n 1 | grep 'Cpu(s)'
%Cpu(s):  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
[root@test~]#  /usr/bin/top -b -n 1 | grep 'Cpu(s)'| awk '{print $8}'| awk '{print int($0)}'
0

[root@SLYNLUBAOS01 ~]# /usr/bin/top -b -n 1 | grep 'Cpu(s)'
%Cpu(s):  0.0 us,  3.1 sy,  0.0 ni, 96.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
[root@SLYNLUBAOS01 ~]#  /usr/bin/top -b -n 1 | grep 'Cpu(s)'| awk '{print $8}'| awk '{print int($0)}'
96