When I create an EKS cluster with LocalStack:

awslocal eks create-cluster 
  --name cluster1 
  --role-arn "arn:aws:iam::000000000000:role/eks-role" 
  --resources-vpc-config "{}"

Confirm:

awslocal eks describe-cluster --name cluster1
{
    "cluster": {
        "name": "cluster1",
        "arn": "arn:aws:eks:ap-northeast-1:000000000000:cluster/cluster1",
        "createdAt": "2024-05-22T13:52:00.327000+09:00",
        "version": "1.22",
        "endpoint": "https://localhost.localstack.cloud:4510",
        "roleArn": "arn:aws:iam::000000000000:role/eks-role",
        "resourcesVpcConfig": {
            "securityGroupIds": [],
            "endpointPublicAccess": true,
            "endpointPrivateAccess": false,
            "publicAccessCidrs": [
                "0.0.0.0/0"
            ]
        },
        "identity": {
            "oidc": {
                "issuer": "https://localhost.localstack.cloud/eks-oidc"
            }
        },
        "status": "ACTIVE",
....
}

Set kubernetes context:

awslocal eks update-kubeconfig --name cluster1 && 
    kubectl config use-context arn:aws:eks:ap-northeast-1:000000000000:cluster/cluster1

Why got error when run kubectl command?

kubectl get po
I0522 14:04:44.688006   27587 versioner.go:58] Get "https://localhost.localstack.cloud:4510/version?timeout=5s": EOF
E0522 14:04:55.119358   27587 memcache.go:265] couldn't get current server API group list: Get "https://localhost.localstack.cloud:4510/api?timeout=32s": EOF

The EKS’ endpoint is using 4510. The LocalStack’s default endpoint is 4566.
Is the port a reason?