Today I needed to scale one of my kubernetes clusterss. Those keys are not in my new laptop since I used Mac Air M1. I didn’t see the increase of nodes several minutes after I run the eksctl scale command. I logged into aws console and found there were several "Failed" messages in activity history of the autoscaling group. All the failed messages shown "Launching a new EC2 instance. Status Reason: The aaaa-nodegroup-ng-1-67:8e:b8:8e:33:83:93:68 key pair does not exist.