I've been thinking about a Jenkins job to check the pricing for the agent boxes we spin up; every so often the price spikes and it'll be an hour or two before anyone notices that no new agents are coming up, and then we have to go in manually and check the spot price and adjust accordingly, or switch zones, etc.
My first instinct was that the best route is to have an hourly Jenkins job that runs a
aws ec2 describe-spot-instance-requests and checks for failed requests (and then slacks us on a failure). But I'm wondering if there's a cleaner method that involves actually comparing hard prices (and could therefore tell us exactly what's off, and by how much), rather than looking at successful/failed requests.
Anyone set up something similar? How'd you do it?