Bug: Error occurred while upgrading Node Group in EC2 instance created through Karpenter about eks-cluster-upgrade

[namejsjeongkr]

@bryantbiggs, I appreciate your reply. I totally understood what you're saying and I'm looking forward to develop feature to upgrade smoothly Karpenter nodes.

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[namejsjeongkr]

I'm looking forward to your reply

[bryantbiggs]

where does the Karpenter controller pods run in your cluster, are they deployed on EKS Fargate?

[namejsjeongkr]

Thanks for replying my case.
No. I deployed on EKS EC2 Instances.

[bryantbiggs]

Ok, and how did that instance get created

[namejsjeongkr]

@bryantbiggs
When I created an EKS cluster, I provisioned two Managed NodeGroups. Nodes that are subsequently created are set up to be provisioned through Karpenter.

So, When I tried to upgrade EKS Cluster, �there was a mix of instances created through Managed NodeGroup and Karpenter.

[bryantbiggs]

ah ok - now I think I (might) know the issue. eksupgrade is looking for the parent ASG of each instance but it won't find any for Karpenter nodes, got it!

[namejsjeongkr]

ah ok - now I think I (might) know the issue. eksupgrade is looking for the parent ASG of each instance but it won't find any for Karpenter nodes, got it!

I'm curious about it.. As far as I know, Karpenter is developed by AWS. Why didn't you consider this function ? You know, Karpenter doesn't use ASG(Auto Scaling Group) to provision EC2 instances.

[bryantbiggs]

This project was developed by previous colleagues long before Karpenter existed so I suspect that plays a large factor

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[namejsjeongkr]

@bryantbiggs, Is there anything to update for me ? If you're too busy to develop this feature, I could help you !

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[namejsjeongkr]

I'll develop the function and post Pull Request.

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