This can be used for windows or linux instances. Use vars to choose which one.

• In the Console go to 'AWS Systems Manager'
• Click on 'Documents'
• Run the 'ssm_SetupWindows' or 'ssm_linux_setup' against the instance you wish to monitor

module "aws_tf_ebs_resize" { source = "/aws_tf_ebs_resize" alarm_email = "[email protected]" InstanceId = "i-1234567890" bucket_name = "Your bucket name" }

If you are using linux then add metric_name = "MemoryUsed" namespace = "System/Linux"

have access to the account you wish to deploy in terraoform init terraform apply

This state machine is trigged by the custom cloud watch metric for low disk space avalible then:

• Pass in the instance ID from watch
• Runs SSM to get the volume ID and current size
• Increase by deafult 10%
• Partitions the volume to be able to use the new size
• if over 100GB (deafult) will send an email
• increase must be bigger than 1 on size of volume

• mutliple volumes
• pass letter of volume into partition
• tag snapshot
• s3 upload of file for ec2
• interagration into chat e.g. teams, slack
• prvisoinsed IOPs

Supporting links: https://aws.amazon.com/blogs/storage/automating-amazon-ebs-volume-resizing-with-aws-step-functions-and-aws-systems-manager/ https://stackoverflow.com/questions/37441225/how-to-monitor-free-disk-space-at-aws-ec2-with-cloud-watch-in-windows https://docs.aws.amazon.com/powershell/latest/userguide/specifying-your-aws-credentials.html https://docs.aws.amazon.com/AWSEC2/latest/WindowsGuide/ec2-windows-volumes.html

https://forums.aws.amazon.com/thread.jspa?start=25&threadID=310713&tstart=0 https://n2ws.com/blog/how-to-guides/how-to-increase-the-size-of-an-aws-ebs-cloud-volume-attached-to-a-linux-machine https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mon-scripts.html

If your step function is failing saying the volume name is NA then made sure you enough permisson on the ec2 Check the ec2 role example in policies.

If cant get volume id because of access keys, ensure the EC2 has Read access

• https://stackoverflow.com/questions/37441225/how-to-monitor-free-disk-space-at-aws-ec2-with-cloud-watch-in-windows
• EC2 Role has access to cloud watch, SSM and S3

• Copy from polciies folder AWS.EC2.Windows.CloudWatch.json added to server C:\Program Files\Amazon\SSM\Plugins\awsCloudWatch\

• aws s3 cp s3://<bucketname>/AWS.EC2.Windows.CloudWatch.json C:\Program Files\Amazon\SSM\Plugins\awsCloudWatch\AWS.EC2.Windows.CloudWatch.json

• Change Region if needed

• Run Powershell as administrator and run Restart-Service AmazonSSMAgent

• Update the Cloudwatch with the EC2 ID

• https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/mon-scripts.html
• sudo yum install -y perl-Switch perl-DateTime perl-Sys-Syslog perl-LWP-Protocol-https perl-Digest-SHA.x86_64
• curl https://aws-cloudwatch.s3.amazonaws.com/downloads/CloudWatchMonitoringScripts-1.2.2.zip -O
• unzip CloudWatchMonitoringScripts-1.2.2.zip &&
  rm CloudWatchMonitoringScripts-1.2.2.zip &&
  cd aws-scripts-mon
• ./mon-put-instance-data.pl --mem-used-incl-cache-buff --mem-util --mem-used --mem-avail or to use crontab -e and paste> */5 * * * * ~/aws-scripts-mon/mon-put-instance-data.pl --mem-used-incl-cache-buff --mem-util --disk-space-util --disk-path=/ --from-cron Notes you exit by doing esc, :wq!