{"id":7138,"date":"2017-11-28T08:41:29","date_gmt":"2017-11-28T00:41:29","guid":{"rendered":"http:\/\/rmohan.com\/?p=7138"},"modified":"2017-11-28T08:41:29","modified_gmt":"2017-11-28T00:41:29","slug":"monitoring-memory-utilisation-of-aws-ec2-instance-in-cloudwatch","status":"publish","type":"post","link":"https:\/\/mohan.sg\/?p=7138","title":{"rendered":"Monitoring Memory Utilisation of aws EC2 instance in\u00a0CloudWatch"},"content":{"rendered":"
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Connect to your EC2 instance using ssh.
\nssh -i ec2-user@my_ec2_ip_address<\/code><\/p>\n

Install following perl packages
\nsudo yum install -y perl-Switch perl-DateTime perl-Sys-Syslog perl-LWP-Protocol-https<\/code><\/p>\n

Download the monitoring scripts
\ncurl http:\/\/aws-cloudwatch.s3.amazonaws.com\/downloads\/CloudWatchMonitoringScripts-1.2.1.zip<\/a> -O<\/code><\/p>\n

Install the monitoring scripts
\nunzip CloudWatchMonitoringScripts-1.2.1.zip
\nrm CloudWatchMonitoringScripts-1.2.1.zip
\ncd aws-scripts-mon<\/code><\/p>\n

run the following command to check the memory utilisation.
\n.\/mon-get-instance-stats.pl --recent-hours=12<\/code><\/p>\n

In order to push this data periodically to cloud watch, we need to create an IAM user with relevant permissions, then schedule a cron job<\/a> to periodically push the data to aws cloud watch.<\/p>\n

Create a new IAM user<\/a> and provide him access to the ec2 instance and cloud watch. Make a note of the aws\u00a0credentials i.e. access key and secret key. You need this later. Make sure the IAM user has following access.<\/p>\n

cloudwatch:PutMetricData
\ncloudwatch:GetMetricStatistics
\ncloudwatch:ListMetrics
\nec2:DescribeTags<\/p><\/blockquote>\n

For the purpose of the demo, you can provide full access to EC2 and CloudWatch (This is not recommended for production.)<\/p>\n

run the following command
\ncp awscreds.template awscreds.con<\/code><\/p>\n

open the file \u00a0awscreds.conf<\/span><\/em> and enter the key & secret.<\/span>
\nThe content of the file should look something like this<\/p>\n

AWSAccessKeyId=AKAWSACESSKEYSA
\nAWSSecretKey=z\/NOAWSSECRETkeyzt<\/p><\/blockquote>\n

Run the following command to push the data to cloud watch
\n.\/mon-put-instance-data.pl --mem-util --mem-used --mem-avail<\/code><\/p>\n

Now, configure the cron tab to automate this process at eveny 5 minutes interval.
\ncrontab -e
\n*\/5 * * * * ~\/aws-scripts-mon\/mon-put-instance-data.pl --mem-util --disk-space-util --disk-path=\/ --from-cron
\n<\/code><\/p>\n

In your aws console, go to cloud watch section, and select Metrics => custom namespaces => Linux System. Select the required metrics.<\/p>\n<\/div>\n<\/article>\n

\"\"<\/a><\/p>\n<\/div>\n

 <\/p>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"\n

Connect to your EC2 instance using ssh. ssh -i ec2-user@my_ec2_ip_address<\/p>\n

Install following perl packages sudo yum install -y perl-Switch perl-DateTime perl-Sys-Syslog perl-LWP-Protocol-https<\/p>\n

Download the monitoring scripts curl http:\/\/aws-cloudwatch.s3.amazonaws.com\/downloads\/CloudWatchMonitoringScripts-1.2.1.zip -O<\/p>\n

Install the monitoring scripts unzip CloudWatchMonitoringScripts-1.2.1.zip rm CloudWatchMonitoringScripts-1.2.1.zip cd aws-scripts-mon<\/p>\n

run the following command to check the memory utilisation. .\/mon-get-instance-stats.pl –recent-hours=12<\/p>\n

In order to push […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49],"tags":[],"_links":{"self":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7138"}],"collection":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7138"}],"version-history":[{"count":1,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7138\/revisions"}],"predecessor-version":[{"id":7140,"href":"https:\/\/mohan.sg\/index.php?rest_route=\/wp\/v2\/posts\/7138\/revisions\/7140"}],"wp:attachment":[{"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7138"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7138"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mohan.sg\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7138"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}