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I have an EC2 instance that I use rarely, so it spends a lot of time in a stopped state. Because it's using an elastic IP, I want to schedule a very brief start and stop command once an hour, to avoid incurring extra charges for having an unallocated elastic IP address.

I wanted to try using CloudWatch to schedule the event, but there's no option to start an instance on alarm, only stop and reboot etc. Do I have to make a whole new CloudFormation stack just to do this one task?

cyclopsmart
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1 Answers1

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A quick calculations show an EIP costs $3.60/month, a M5.Large turned on for one minute an hour costs $1.35 per month. How much effort are you prepared to go to to save a couple of dollars? The most you could possibly save is $3.60 per month, which isn't really worth much time IMHO.

Though saying that, I did change my t2.nano to a reserved instance to save $3/month, but that was very low effort.

The answer to your technical query is here. Use the instance scheduler.

Tim
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