Memory Utilization for auto scaling group AWS

user_5372967 0
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I am Setting up AWS autoscaling, and while setting scaling policy i ran into this problem.

I wanted to use memory as a parameter, so i installed CLoudwatch's script for memory monitoring from below link.

http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mon-scripts.html

When i use it for simple instance it works fine. but when i do it for autosacling with below command as suggested in above doc it gives error

Command

./mon-put-instance-data.pl --mem-util --mem-used --mem-avail --auto-scaling=only

Error:

WARNING: The Auto Scaling metrics will not be reported this time.

when i check this error on internet few people said it may be error of instance-id in /var/tmp/aws-mon i checked that is not the issue.

Any help is appreciated.

autoscaling amazon-cloudwatch amazon-web-services
4 Answers

Here is link to AWS support with same question.

Here is link to source code of the Perl script. I'm not sure if it can be publicated here, so open the ZIP file go to mon-put-instance-data.pl, and search for reported. From that to ifs it appear that the error occurs if you did not provided verify, nor autoscaling group name. Since first is only for testing - we have winner. Please provide autoscaling group name parameter...

Well, there are no that parameter, but if you look closer you can see that some lines before reported from find, there is query for that. So... your instance has no access.

Googling with CloudWatchClient::get_auto_scaling_group gives this result. From there you can read that you should grant your instance permission to publish data to CloudWatch...

If you have other questions, please - ask. I'll edit this answer, so we will have something more or less complete - not only for me.

user_61030010

well i did the most stupid thing possible in this scenario, i am posting this as an answer so it can help anyone else. i was testing on the instance which was not member of any auto scaling group.

user_53729670

I was facing the same challenge, but the correct answer to this question is, you might have missed the prerequisites which are mentioned at:

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mon-scripts.html#mon-scripts- perl_prereq

This compilation error actually shows that there are some packages missing, which are required to run the perl script.

If you are using EC2 linux instance to run these scripts, you have probably missed running following command:

sudo yum install -y perl-Switch perl-DateTime perl-Sys-Syslog perl-LWP-Protocol-https perl-Digest-SHA.x86_64

Once you run this command your script should be running fine without any error.

Hope that helps. :)

user_25276970
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