Dennis Zheleznyak

Dennis Zheleznyak

DevOps Engineer bigpanda

© 2021

Cluster-autoscalers upgrade broke auto-discovery

If you’ve upgraded your Kubernetes cluster-autoscaler from 0.X to 1.X and using auto-discovery to find AWS ASGs, make sure to update the ASGs tags since they were changed.

The following resource tags on the AWSs ASG resource it self are required by the autoscaler:<YOUR CLUSTER NAME>

After the upgrade(for me it was 0.X -> 1.15), auto-discovery stopped working.

We then realized the tags were changed to:<YOUR CLUSTER NAME>

Once the tags were changed, auto-discovery started discovering again.