"on-demand" and "spot" EC2 instances in a single stack/GH-app for multi-runner?

[cisco-sbg-mgiassa-ai]

Good day,

Would it be realistically possible to setup an instance of multi-runner, and have the "spot-versus-on-demand" EC2 settings be per runner type, rather than some global setting for the entire GitHub App (i.e. stack/module-instance)? About 95% of the time, spot works great, but there are some CICD jobs where getting hit w/ node eviction can be quite painful (especially if it happens multiple times per day in a busy region during peak usage hours). It would be extremely helpful to be able to just set an addition runs-on flag and call it a day.

[npalm]

Currently you can set via instance_target_capacity_type per runner type to use spot or on-demand. Which is not flexible. The module also allows to create on-demand if spot fails. But indeed there is nothing in place in case the job fails.

Options that could be investigated could be

• Move automatically to on-demand if spot-failures is hitting a treshhold
• Allow a dynamic label in runs-on to indicate a job needs to run on on-demand always
• ...?