添加管理员
eksctl create iamidentitymapping --cluster demo-us-eks-prod-01 --region=us-east-1 --arn arn:aws:iam::<根ID>:user/demo --group system:masters --no-duplicate-arns
eksctl create iamidentitymapping --cluster demo-us-eks-prod-01 --region=us-east-1 --arn arn:aws:iam::<根ID>:user/demo --group system:masters --no-duplicate-arns