I'm having an issue with AWS boxes (EC2) where I terminate the box and it re-spawns. To give context, there is no autoscaling group. Anywhere I can search for some config that might be triggering the launch?
2 Answers
I would make sure you don't have a persistent spot request active in your account, and also check to see if you perhaps installed the AWS Instance scheduler - either or both of those could be starting instances on your behalf - (double check the autoscaling group, that is the most obvious reason though)
If you terminate a running Spot Instance that was launched by a persistent Spot request, the Spot request returns to the open state so that a new Spot Instance can be launched. To cancel a persistent Spot request and terminate its Spot Instances, you must cancel the Spot request first and then terminate the Spot Instances. Otherwise, the persistent Spot request can launch a new instance.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/spot-requests.html#terminating-a-spot-instance
So I found out the culprit, maybe it can help more people. Apparently, there is a service from AWS called OpsWorks that automates things like Cheff of Puppet, which my company had configured some time ago. That would be checking for instances running and triggering re-provisioning when it didn't see the instance running. OpsWorks is here
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