Monitoring EC2 disk metrics using aws mon scripts

Question

I am using aws mon scripts for monitoring EC2 instances using following script :

#!/bin/bash
a="$(df | grep /dev/ | awk {'print $1'})"
IFS=' ' read -r -a array <<< $a
#echo "${array[0]}"
for element in "${array[@]}"
do
/opt/aws-scripts-mon/mon-put-instance-data.pl --mem-util --disk-space-util  --swap-util --disk-path="$element" --aws-credential-file=/opt/aws-scripts-mon/awscreds.template
done

Issue is it shows udev in cloudwatch for few machines instead of disk xvda1. Also,when I run this shell script in debug mode, it is compiled as xvda1 but passed to cloudwatch as udev.

Answer 1

If you read the docs it states that you need to give the mount point.

--disk-path=PATH Selects the disk on which to report.

PATH can specify a mount point or any file located on a mount point for the filesystem that needs to be reported

Your script is giving the file-system point where as if you see the df output we need to give mount point.

a="$(df | grep /dev/ | awk {'print $6'})" 

This should solve your problem. So for xvda1 it will like this --disk-path=/