Downsize EC2 machines strategy?

Question

I have 12 EC2 machines with running projects ( prod, dev, staging) with load  balancer pointing at them and I need to downsize this machines, and from what I have investigated I have 2 options.

Either I use the AMI from this machines and create a new EC2 based on that or I can downsize using the AWS CLI correct ?

So the easiest safest and fastest way to do this would be to use AWS CLI to downsize correct ?

Thanks

Gary · Accepted Answer

You can change the Instance Size in the GUI or CLi.

In the Gui, Stop the EC2
Select the EC2 and Click Actions -> Instance Settings -> Change Instance Type

Here you can down size the EC2. Changing instance Type is usually not an issue. There are issues going from a T2 to a T3.

You may want to create a Snapshot of the EC2 before hand in case of any issues when powering back on and you can at least restore to a known state.

Downsize EC2 machines strategy?

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