Let CloudWatch monitor your disk and memory utilisation

Posted under others On By xpk

It is possible to use CloudWatch to monitor your disk and memory usage. There are very good information on AWS – http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/mon-scripts-perl.html

For the impatient, here is how to get it done.

First, install the required packages

% yum install perl-DateTime perl-Sys-Syslog perl-LWP-Protocol-https
% wget http://aws-cloudwatch.s3.amazonaws.com/downloads/CloudWatchMonitoringScripts-1.2.1.zip

Unzip the zip file into /usr/local/bin. Then create the following cronjob:

*/5 * * * * /usr/local/bin/mon-put-instance-data.pl --disk-path=/ --disk-space-util --from-cron --aws-access-key-id=xxx --aws-secret-key=xxx

That’s it, in a few minutes, you should start seeing the graphs under “Linux System Metrics”. Here is what it looks like

CloudWatch_Management_Console

Of course, to use the cronjob, you need to grant at least CloudWatchFullAccess to a user and replace the “xxx” to the actual id and key.

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