Upgrade EC2 Instance type

[tintheparkin]

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I've been testing out the possibility of upgrading instance types of previously puppet launched ec2 instances. I see that instance_type property is read-only, but would it be possible to upgrade instance types after ensure that the instance is stopped?

Has this issue come up previously?

[garethr]

This is definitely something of interest, we just need a pattern that works. The trick here is that, to change the instance_type the instance is terminated and a new one launched. This is absolutely doable but requires some careful error handling. I'd love to see this feature.

[tintheparkin]

Thanks for replying! It sounds tedious, I should clarify though that my aim is to upgrade the instance type without terminating ebs backed instances. only to stop the instance, change isntance_type and then start the instance again. Much like when using the AWS webgui.

[garethr]

Not too tedious hopefully, just requires multiple steps (like you say, stop instance, make change, start instance). This is definitely doable, just needs a nice pattern. instance_type is a good property to pick off first, I'd wager this could be generalised afterwards for other properties too.