[mnutt]

They talk about the limitations of the EC2 autoscaler and mention calling LaunchInstances themselves, but are there any autoscaler service projects for EC2 ASGs out there? The AWS-provided one is slow (as they mention), annoyingly opaque, and has all kinds of limitations like not being able to use Warm Pools with multiple instance types etc.

[mdaniel]

I am a little confused by your mention of "EC2 autoscaler" and then "EC2 ASG" autoscaler, but if I'm hearing you correctly and you'd want "self managed ASGs," then you may have some success adapting Keda <https://github.com/kedacore/keda#readme> (or your-favorite-event-driven-gizmo) to monitor the metrics that interest you and driving ec2.LaunchInstances on the other side, since as very best I can tell that's what ASGs are doing just using their serverless-event-something-or-other versus your serverless-event-something-or-other. I would suspect you could even continue to use the existing ec2.LaunchTemplate as the "stamp out copies of these" system, since there doesn't appear to be anything especially ASG-y about them, just that is the only(?) consumer thus far

After having typed all that out, I recalled that Open Stack exists and thus they may get you ever further toward your goal since they are trying to be on-prem AWS: https://docs.openstack.org/auto-scaling-sig/latest/theory-of...

[flaminHotSpeedo]

Yeah that's basically what asg does, you can see the createFleet requests in cloudtrail