Step 1
Make a policy for CloudWatch monitoring at IAM.
{
"Version": "2012-10-17",
"Statement": [
{
"Action": [
"cloudwatch:GetMetricStatistics",
"cloudwatch:ListMetrics",
"cloudwatch:PutMetricData",
"ec2:DescribeTags"
],
"Effect": "Allow",
"Resource": "*"
}
]
}
Step 2
Add CloudWatch monitoring policy to an IAM user, and get AWSAccessKeyID
and AWSSecretKey
.
Step 3
Run this script.
#!/bin/bash
set -e
sudo su -p <<HERE
# yum packages
yum -y install perl-Switch perl-DateTime perl-Sys-Syslog perl-LWP-Protocol-https
# install cloudwatch monitoring scripts
cd /opt/aws
curl http://aws-cloudwatch.s3.amazonaws.com/downloads/CloudWatchMonitoringScripts-1.2.1.zip -O
unzip CloudWatchMonitoringScripts-1.2.1.zip
rm -rf CloudWatchMonitoringScripts-1.2.1.zip
touch /opt/aws/aws-scripts-mon/awscreds.conf
# awscreds
echo 'AWSAccessKeyId=XXXXXXXXXXXXXXXX' >> /opt/aws/aws-scripts-mon/awscreds.conf
echo 'AWSSecretKey=XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX' >> /opt/aws/aws-scripts-mon/awscreds.conf
# crontab
echo '*/1 * * * * /opt/aws/aws-scripts-mon/mon-put-instance-data.pl --mem-util --mem-used --mem-avail' >> mycron
crontab mycron
rm -rf mycron
HERE
Step 4
Now you can get metrics about memory at CloudWatch.
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