Public Subnet에 “퍼블릭 IPv4 주소 자동 할당 활성화" 체크가 안되어 있어서 아래 에러 메시지가 발생합니다.

One or more Amazon EC2 Subnets of [subnet-0d749, subnet-0d504a5] for node group worker1 does not automatically assign public IP addresses to instances launched into it. If you want your instances to be assigned a public IP address, then you need to enable auto-assign public IP address for the subnet. See IP addressing in VPC guide: https://docs.aws.amazon.com/vpc/latest/userguide/vpc-ip-addressing.html#subnet-public-ip